path: root/modules/simpletest/tests/file.test

<?php

/**
 *  @file
 *  This provides SimpleTests for the core file handling functionality.
 *  These include FileValidateTest and FileSaveTest.
 */

/**
 * Helper validator that returns the $errors parameter.
 */
function file_test_validator($file, $errors) {
  return $errors;
}

/**
 * Helper function for testing file_scan_directory().
 *
 * Each time the function is called the file is stored in a static variable.
 * When the function is called with no $filepath parameter, the results are
 * returned.
 *
 * @param $filepath
 *   File path
 * @return
 *   If $filepath is NULL, an array of all previous $filepath parameters
 */
function file_test_file_scan_callback($filepath = NULL) {
  $files = &drupal_static(__FUNCTION__, array());
  if (isset($filepath)) {
    $files[] = $filepath;
  }
  else {
    return $files;
  }
}

/**
 * Reset static variables used by file_test_file_scan_callback().
 */
function file_test_file_scan_callback_reset() {
  drupal_static_reset('file_test_file_scan_callback');
}

/**
 * Base class for file tests that adds some additional file specific
 * assertions and helper functions.
 */
class FileTestCase extends DrupalWebTestCase {
  /**
   * Check that two files have the same values for all fields other than the
   * timestamp.
   *
   * @param $before
   *   File object to compare.
   * @param $after
   *   File object to compare.
   */
  function assertFileUnchanged($before, $after) {
    $this->assertEqual($before->fid, $after->fid, t('File id is the same: %file1 == %file2.', array('%file1' => $before->fid, '%file2' => $after->fid)), 'File unchanged');
    $this->assertEqual($before->uid, $after->uid, t('File owner is the same: %file1 == %file2.', array('%file1' => $before->uid, '%file2' => $after->uid)), 'File unchanged');
    $this->assertEqual($before->filename, $after->filename, t('File name is the same: %file1 == %file2.', array('%file1' => $before->filename, '%file2' => $after->filename)), 'File unchanged');
    $this->assertEqual($before->uri, $after->uri, t('File path is the same: %file1 == %file2.', array('%file1' => $before->uri, '%file2' => $after->uri)), 'File unchanged');
    $this->assertEqual($before->filemime, $after->filemime, t('File MIME type is the same: %file1 == %file2.', array('%file1' => $before->filemime, '%file2' => $after->filemime)), 'File unchanged');
    $this->assertEqual($before->filesize, $after->filesize, t('File size is the same: %file1 == %file2.', array('%file1' => $before->filesize, '%file2' => $after->filesize)), 'File unchanged');
    $this->assertEqual($before->status, $after->status, t('File status is the same: %file1 == %file2.', array('%file1' => $before->status, '%file2' => $after->status)), 'File unchanged');
  }

  /**
   * Check that two files are not the same by comparing the fid and filepath.
   *
   * @param $file1
   *   File object to compare.
   * @param $file2
   *   File object to compare.
   */
  function assertDifferentFile($file1, $file2) {
    $this->assertNotEqual($file1->fid, $file2->fid, t('Files have different ids: %file1 != %file2.', array('%file1' => $file1->fid, '%file2' => $file2->fid)), 'Different file');
    $this->assertNotEqual($file1->uri, $file2->uri, t('Files have different paths: %file1 != %file2.', array('%file1' => $file1->uri, '%file2' => $file2->uri)), 'Different file');
  }

  /**
   * Check that two files are the same by comparing the fid and filepath.
   *
   * @param $file1
   *   File object to compare.
   * @param $file2
   *   File object to compare.
   */
  function assertSameFile($file1, $file2) {
    $this->assertEqual($file1->fid, $file2->fid, t('Files have the same ids: %file1 == %file2.', array('%file1' => $file1->fid, '%file2-fid' => $file2->fid)), 'Same file');
    $this->assertEqual($file1->uri, $file2->uri, t('Files have the same path: %file1 == %file2.', array('%file1' => $file1->uri, '%file2' => $file2->uri)), 'Same file');
  }

  /**
   * Helper function to test the permissions of a file.
   *
   * @param $filepath
   *   String file path.
   * @param $expected_mode
   *   Octal integer like 0664 or 0777.
   * @param $message
   *   Optional message.
   */
  function assertFilePermissions($filepath, $expected_mode, $message = NULL) {
    // Clear out PHP's file stat cache to be sure we see the current value.
    clearstatcache();

    // Mask out all but the last three octets.
    $actual_mode = fileperms($filepath) & 0777;

    // PHP on Windows has limited support for file permissions. Usually each of
    // "user", "group" and "other" use one octal digit (3 bits) to represent the
    // read/write/execute bits. On Windows, chmod() ignores the "group" and
    // "other" bits, and fileperms() returns the "user" bits in all three
    // positions. $expected_mode is updated to reflect this.
    if (substr(PHP_OS, 0, 3) == 'WIN') {
      // Reset the "group" and "other" bits.
      $expected_mode = $expected_mode & 0700;
      // Shift the "user" bits to the "group" and "other" positions also.
      $expected_mode = $expected_mode | $expected_mode >> 3 | $expected_mode >> 6;
    }

    if (!isset($message)) {
      $message = t('Expected file permission to be %expected, actually were %actual.', array('%actual' => decoct($actual_mode), '%expected' => decoct($expected_mode)));
    }
    $this->assertEqual($actual_mode, $expected_mode, $message);
  }

  /**
   * Helper function to test the permissions of a directory.
   *
   * @param $directory
   *   String directory path.
   * @param $expected_mode
   *   Octal integer like 0664 or 0777.
   * @param $message
   *   Optional message.
   */
  function assertDirectoryPermissions($directory, $expected_mode, $message = NULL) {
    // Clear out PHP's file stat cache to be sure we see the current value.
    clearstatcache();

    // Mask out all but the last three octets.
    $actual_mode = fileperms($directory) & 0777;

    // PHP on Windows has limited support for file permissions. Usually each of
    // "user", "group" and "other" use one octal digit (3 bits) to represent the
    // read/write/execute bits. On Windows, chmod() ignores the "group" and
    // "other" bits, and fileperms() returns the "user" bits in all three
    // positions. $expected_mode is updated to reflect this.
    if (substr(PHP_OS, 0, 3) == 'WIN') {
      // Reset the "group" and "other" bits.
      $expected_mode = $expected_mode & 0700;
      // Shift the "user" bits to the "group" and "other" positions also.
      $expected_mode = $expected_mode | $expected_mode >> 3 | $expected_mode >> 6;
    }

    if (!isset($message)) {
      $message = t('Expected directory permission to be %expected, actually were %actual.', array('%actual' => decoct($actual_mode), '%expected' => decoct($expected_mode)));
    }
    $this->assertEqual($actual_mode, $expected_mode, $message);
  }

  /**
   * Create a directory and assert it exists.
   *
   * @param $path
   *   Optional string with a directory path. If none is provided, a random
   *   name in the site's files directory will be used.
   * @return
   *   The path to the directory.
   */
  function createDirectory($path = NULL) {
    // A directory to operate on.
    if (!isset($path)) {
      $path = file_default_scheme() . '://' . $this->randomName();
    }
    $this->assertTrue(drupal_mkdir($path) && is_dir($path), t('Directory was created successfully.'));
    return $path;
  }

  /**
   * Create a file and save it to the files table and assert that it occurs
   * correctly.
   *
   * @param $filepath
   *   Optional string specifying the file path. If none is provided then a
   *   randomly named file will be created in the site's files directory.
   * @param $contents
   *   Optional contents to save into the file. If a NULL value is provided an
   *   arbitrary string will be used.
   * @param $scheme
   *   Optional string indicating the stream scheme to use. Drupal core includes
   *   public, private, and temporary. The public wrapper is the default.
   * @return
   *   File object.
   */
  function createFile($filepath = NULL, $contents = NULL, $scheme = 'public') {
    if (!isset($filepath)) {
      $filepath = $this->randomName();
    }
    $filepath = $scheme . '://' . $filepath;

    if (!isset($contents)) {
      $contents = "file_put_contents() doesn't seem to appreciate empty strings so let's put in some data.";
    }

    file_put_contents($filepath, $contents);
    $this->assertTrue(is_file($filepath), t('The test file exists on the disk.'), 'Create test file');

    $file = new stdClass();
    $file->uri = $filepath;
    $file->filename = basename($file->uri);
    $file->filemime = 'text/plain';
    $file->uid = 1;
    $file->timestamp = REQUEST_TIME;
    $file->filesize = filesize($file->uri);
    $file->status = 0;
    // Write the record directly rather than calling file_save() so we don't
    // invoke the hooks.
    $this->assertNotIdentical(drupal_write_record('file_managed', $file), FALSE, t('The file was added to the database.'), 'Create test file');

    return $file;
  }
}

/**
 * Base class for file tests that use the file_test module to test uploads and
 * hooks.
 */
class FileHookTestCase extends FileTestCase {
  function setUp() {
    // Install file_test module
    parent::setUp('file_test');
    // Clear out any hook calls.
    file_test_reset();
  }

  /**
   * Assert that all of the specified hook_file_* hooks were called once, other
   * values result in failure.
   *
   * @param $expected
   *   Array with string containing with the hook name, e.g. 'load', 'save',
   *   'insert', etc.
   */
  function assertFileHooksCalled($expected) {
    // Determine which hooks were called.
    $actual = array_keys(array_filter(file_test_get_all_calls()));

    // Determine if there were any expected that were not called.
    $uncalled = array_diff($expected, $actual);
    if (count($uncalled)) {
      $this->assertTrue(FALSE, t('Expected hooks %expected to be called but %uncalled was not called.', array('%expected' => implode(', ', $expected), '%uncalled' => implode(', ', $uncalled))));
    }
    else {
      $this->assertTrue(TRUE, t('All the expected hooks were called: %expected', array('%expected' => empty($expected) ? t('(none)') : implode(', ', $expected))));
    }

    // Determine if there were any unexpected calls.
    $unexpected = array_diff($actual, $expected);
    if (count($unexpected)) {
      $this->assertTrue(FALSE, t('Unexpected hooks were called: %unexpected.', array('%unexpected' => empty($unexpected) ? t('(none)') : implode(', ', $unexpected))));
    }
    else {
      $this->assertTrue(TRUE, t('No unexpected hooks were called.'));
    }
  }

  /**
   * Assert that a hook_file_* hook was called a certain number of times.
   *
   * @param $hook
   *   String with the hook name, e.g. 'load', 'save', 'insert', etc.
   * @param $expected_count
   *   Optional integer count.
   * @param $message
   *   Optional translated string message.
   */
  function assertFileHookCalled($hook, $expected_count = 1, $message = NULL) {
    $actual_count = count(file_test_get_calls($hook));

    if (!isset($message)) {
      if ($actual_count == $expected_count) {
        $message = t('hook_file_@name was called correctly.', array('@name' => $hook));
      }
      elseif ($expected_count == 0) {
        $message = format_plural($actual_count, 'hook_file_@name was not expected to be called but was actually called once.', 'hook_file_@name was not expected to be called but was actually called @count times.', array('@name' => $hook, '@count' => $actual_count));
      }
      else {
        $message = t('hook_file_@name was expected to be called %expected times but was called %actual times.', array('@name' => $hook, '%expected' => $expected_count, '%actual' => $actual_count));
      }
    }
    $this->assertEqual($actual_count, $expected_count, $message);
  }
}


/**
 *  This will run tests against the file_space_used() function.
 */
class FileSpaceUsedTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File space used tests',
      'description' => 'Tests the file_space_used() function.',
      'group' => 'File API',
    );
  }

  function setUp() {
    parent::setUp();

    // Create records for a couple of users with different sizes.
    $file = array('uid' => 2, 'uri' => 'public://example1.txt', 'filesize' => 50, 'status' => FILE_STATUS_PERMANENT);
    drupal_write_record('file_managed', $file);
    $file = array('uid' => 2, 'uri' => 'public://example2.txt', 'filesize' => 20, 'status' => FILE_STATUS_PERMANENT);
    drupal_write_record('file_managed', $file);
    $file = array('uid' => 3, 'uri' => 'public://example3.txt', 'filesize' => 100, 'status' => FILE_STATUS_PERMANENT);
    drupal_write_record('file_managed', $file);
    $file = array('uid' => 3, 'uri' => 'public://example4.txt', 'filesize' => 200, 'status' => FILE_STATUS_PERMANENT);
    drupal_write_record('file_managed', $file);

    // Now create some non-permanent files.
    $file = array('uid' => 2, 'uri' => 'public://example5.txt', 'filesize' => 1, 'status' => 0);
    drupal_write_record('file_managed', $file);
    $file = array('uid' => 3, 'uri' => 'public://example6.txt', 'filesize' => 3, 'status' => 0);
    drupal_write_record('file_managed', $file);
  }

  /**
   * Test different users with the default status.
   */
  function testFileSpaceUsed() {
    // Test different users with default status.
    $this->assertEqual(file_space_used(2), 70);
    $this->assertEqual(file_space_used(3), 300);
    $this->assertEqual(file_space_used(), 370);

    // Test the status fields
    $this->assertEqual(file_space_used(NULL, 0), 4);
    $this->assertEqual(file_space_used(NULL, FILE_STATUS_PERMANENT), 370);

    // Test both the user and status.
    $this->assertEqual(file_space_used(1, 0), 0);
    $this->assertEqual(file_space_used(1, FILE_STATUS_PERMANENT), 0);
    $this->assertEqual(file_space_used(2, 0), 1);
    $this->assertEqual(file_space_used(2, FILE_STATUS_PERMANENT), 70);
    $this->assertEqual(file_space_used(3, 0), 3);
    $this->assertEqual(file_space_used(3, FILE_STATUS_PERMANENT), 300);
  }
}

/**
 *  This will run tests against the file validation functions (file_validate_*).
 */
class FileValidatorTest extends DrupalWebTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File validator tests',
      'description' => 'Tests the functions used to validate uploaded files.',
      'group' => 'File API',
    );
  }

  function setUp() {
    parent::setUp();

    $this->image = new stdClass();
    $this->image->uri = 'misc/druplicon.png';
    $this->image->filename = basename($this->image->uri);

    $this->non_image = new stdClass();
    $this->non_image->uri = 'misc/jquery.js';
    $this->non_image->filename = basename($this->non_image->uri);
  }

  /**
   * Test the file_validate_extensions() function.
   */
  function testFileValidateExtensions() {
    $file = new stdClass();
    $file->filename = 'asdf.txt';
    $errors = file_validate_extensions($file, 'asdf txt pork');
    $this->assertEqual(count($errors), 0, t('Valid extension accepted.'), 'File');

    $file->filename = 'asdf.txt';
    $errors = file_validate_extensions($file, 'exe png');
    $this->assertEqual(count($errors), 1, t('Invalid extension blocked.'), 'File');
  }

  /**
   *  This ensures a specific file is actually an image.
   */
  function testFileValidateIsImage() {
    $this->assertTrue(file_exists($this->image->uri), t('The image being tested exists.'), 'File');
    $errors = file_validate_is_image($this->image);
    $this->assertEqual(count($errors), 0, t('No error reported for our image file.'), 'File');

    $this->assertTrue(file_exists($this->non_image->uri), t('The non-image being tested exists.'), 'File');
    $errors = file_validate_is_image($this->non_image);
    $this->assertEqual(count($errors), 1, t('An error reported for our non-image file.'), 'File');
  }

  /**
   *  This ensures the resolution of a specific file is within bounds.
   *  The image will be resized if it's too large.
   */
  function testFileValidateImageResolution() {
    // Non-images.
    $errors = file_validate_image_resolution($this->non_image);
    $this->assertEqual(count($errors), 0, t("Shouldn't get any errors for a non-image file."), 'File');
    $errors = file_validate_image_resolution($this->non_image, '50x50', '100x100');
    $this->assertEqual(count($errors), 0, t("Don't check the resolution on non files."), 'File');

    // Minimum size.
    $errors = file_validate_image_resolution($this->image);
    $this->assertEqual(count($errors), 0, t('No errors for an image when there is no minimum or maximum resolution.'), 'File');
    $errors = file_validate_image_resolution($this->image, 0, '200x1');
    $this->assertEqual(count($errors), 1, t("Got an error for an image that wasn't wide enough."), 'File');
    $errors = file_validate_image_resolution($this->image, 0, '1x200');
    $this->assertEqual(count($errors), 1, t("Got an error for an image that wasn't tall enough."), 'File');
    $errors = file_validate_image_resolution($this->image, 0, '200x200');
    $this->assertEqual(count($errors), 1, t('Small images report an error.'), 'File');

    // Maximum size.
    if (image_get_toolkit()) {
      // Copy the image so that the original doesn't get resized.
      copy(drupal_realpath('misc/druplicon.png'), 'temporary://druplicon.png');
      $this->image->uri = 'temporary://druplicon.png';

      $errors = file_validate_image_resolution($this->image, '10x5');
      $this->assertEqual(count($errors), 0, t('No errors should be reported when an oversized image can be scaled down.'), 'File');

      $info = image_get_info($this->image->uri);
      $this->assertTrue($info['width'] <= 10, t('Image scaled to correct width.'), 'File');
      $this->assertTrue($info['height'] <= 5, t('Image scaled to correct height.'), 'File');

      drupal_unlink(drupal_realpath('temporary://druplicon.png'));
    }
    else {
      // TODO: should check that the error is returned if no toolkit is available.
      $errors = file_validate_image_resolution($this->image, '5x10');
      $this->assertEqual(count($errors), 1, t("Oversize images that can't be scaled get an error."), 'File');
    }
  }

  /**
   *  This will ensure the filename length is valid.
   */
  function testFileValidateNameLength() {
    // Create a new file object.
    $file = new stdClass();

    // Add a filename with an allowed length and test it.
    $file->filename = str_repeat('x', 240);
    $this->assertEqual(strlen($file->filename), 240);
    $errors = file_validate_name_length($file);
    $this->assertEqual(count($errors), 0, t('No errors reported for 240 length filename.'), 'File');

    // Add a filename with a length too long and test it.
    $file->filename = str_repeat('x', 241);
    $errors = file_validate_name_length($file);
    $this->assertEqual(count($errors), 1, t('An error reported for 241 length filename.'), 'File');

    // Add a filename with an empty string and test it.
    $file->filename = '';
    $errors = file_validate_name_length($file);
    $this->assertEqual(count($errors), 1, t('An error reported for 0 length filename.'), 'File');
  }


  /**
   * Test file_validate_size().
   */
  function testFileValidateSize() {
    global $user;
    $original_user = $user;
    drupal_save_session(FALSE);

    // Run these test as uid = 1.
    $user = user_load(1);

    $file = new stdClass();
    $file->filesize = 999999;
    $errors = file_validate_size($file, 1, 1);
    $this->assertEqual(count($errors), 0, t('No size limits enforced on uid=1.'), 'File');

    // Run these tests as a regular user.
    $user = $this->drupalCreateUser();

    // Create a file with a size of 1000 bytes, and quotas of only 1 byte.
    $file = new stdClass();
    $file->filesize = 1000;
    $errors = file_validate_size($file, 0, 0);
    $this->assertEqual(count($errors), 0, t('No limits means no errors.'), 'File');
    $errors = file_validate_size($file, 1, 0);
    $this->assertEqual(count($errors), 1, t('Error for the file being over the limit.'), 'File');
    $errors = file_validate_size($file, 0, 1);
    $this->assertEqual(count($errors), 1, t('Error for the user being over their limit.'), 'File');
    $errors = file_validate_size($file, 1, 1);
    $this->assertEqual(count($errors), 2, t('Errors for both the file and their limit.'), 'File');

    $user = $original_user;
    drupal_save_session(TRUE);
  }
}



/**
 *  Tests the file_unmanaged_save_data() function.
 */
class FileUnmanagedSaveDataTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Unmanaged file save data',
      'description' => 'Tests the unmanaged file save data function.',
      'group' => 'File API',
    );
  }

  /**
   * Test the file_unmanaged_save_data() function.
   */
  function testFileSaveData() {
    $contents = $this->randomName(8);

    // No filename.
    $filepath = file_unmanaged_save_data($contents);
    $this->assertTrue($filepath, t('Unnamed file saved correctly.'));
    $this->assertEqual(file_uri_scheme($filepath), file_default_scheme(), t("File was placed in Drupal's files directory."));
    $this->assertEqual($contents, file_get_contents(drupal_realpath($filepath)), t('Contents of the file are correct.'));

    // Provide a filename.
    $filepath = file_unmanaged_save_data($contents, 'public://asdf.txt', FILE_EXISTS_REPLACE);
    $this->assertTrue($filepath, t('Unnamed file saved correctly.'));
    $this->assertEqual('asdf.txt', basename($filepath), t('File was named correctly.'));
    $this->assertEqual($contents, file_get_contents(drupal_realpath($filepath)), t('Contents of the file are correct.'));
    $this->assertFilePermissions($filepath, variable_get('file_chmod_file', 0664));
  }
}

/**
 * Test the file_save_upload() function.
 */
class FileSaveUploadTest extends FileHookTestCase {
  /**
   * An image file path for uploading.
   */
  protected $image;

  /**
   * A PHP file path for upload security testing.
   */
  protected $phpfile;

  /**
   * The largest file id when the test starts.
   */
  protected $maxFidBefore;

  public static function getInfo() {
    return array(
      'name' => 'File uploading',
      'description' => 'Tests the file uploading functions.',
      'group' => 'File API',
    );
  }

  function setUp() {
    parent::setUp();
    $account = $this->drupalCreateUser(array('access content'));
    $this->drupalLogin($account);

    $image_files = $this->drupalGetTestFiles('image');
    $this->image = current($image_files);

    list(, $this->image_extension) = explode('.', $this->image->filename);
    $this->assertTrue(is_file($this->image->uri), t("The image file we're going to upload exists."));

    $this->phpfile = current($this->drupalGetTestFiles('php'));
    $this->assertTrue(is_file($this->phpfile->uri), t("The PHP file we're going to upload exists."));

    $this->maxFidBefore = db_query('SELECT MAX(fid) AS fid FROM {file_managed}')->fetchField();

    // Upload with replace to guarantee there's something there.
    $edit = array(
      'file_test_replace' => FILE_EXISTS_REPLACE,
      'files[file_test_upload]' => drupal_realpath($this->image->uri),
    );
    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertRaw(t('You WIN!'), t('Found the success message.'));

    // Check that the correct hooks were called then clean out the hook
    // counters.
    $this->assertFileHooksCalled(array('validate', 'insert'));
    file_test_reset();
  }

  /**
   * Test the file_save_upload() function.
   */
  function testNormal() {
    $max_fid_after = db_query('SELECT MAX(fid) AS fid FROM {file_managed}')->fetchField();
    $this->assertTrue($max_fid_after > $this->maxFidBefore, t('A new file was created.'));
    $file1 = file_load($max_fid_after);
    $this->assertTrue($file1, t('Loaded the file.'));
    // MIME type of the uploaded image may be either image/jpeg or image/png.
    $this->assertEqual(substr($file1->filemime, 0, 5), 'image', 'A MIME type was set.');

    // Reset the hook counters to get rid of the 'load' we just called.
    file_test_reset();

    // Upload a second file.
    $max_fid_before = db_query('SELECT MAX(fid) AS fid FROM {file_managed}')->fetchField();
    $image2 = current($this->drupalGetTestFiles('image'));
    $edit = array('files[file_test_upload]' => drupal_realpath($image2->uri));
    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertRaw(t('You WIN!'));
    $max_fid_after = db_query('SELECT MAX(fid) AS fid FROM {file_managed}')->fetchField();

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('validate', 'insert'));

    $file2 = file_load($max_fid_after);
    $this->assertTrue($file2);
    // MIME type of the uploaded image may be either image/jpeg or image/png.
    $this->assertEqual(substr($file2->filemime, 0, 5), 'image', 'A MIME type was set.');

    // Load both files using file_load_multiple().
    $files = file_load_multiple(array($file1->fid, $file2->fid));
    $this->assertTrue(isset($files[$file1->fid]), t('File was loaded successfully'));
    $this->assertTrue(isset($files[$file2->fid]), t('File was loaded successfully'));

    // Upload a third file to a subdirectory.
    $image3 = current($this->drupalGetTestFiles('image'));
    $image3_realpath = drupal_realpath($image3->uri);
    $dir = $this->randomName();
    $edit = array(
      'files[file_test_upload]' => $image3_realpath,
      'file_subdir' => $dir,
    );
    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertRaw(t('You WIN!'));
    $this->assertTrue(is_file('temporary://' . $dir . '/' . trim(basename($image3_realpath))));

    // Check that file_load_multiple() with no arguments returns FALSE.
    $this->assertFalse(file_load_multiple(), t('No files were loaded.'));
  }

  /**
   * Test extension handling.
   */
  function testHandleExtension() {
    // The file being tested is a .gif which is in the default safe list
    // of extensions to allow when the extension validator isn't used. This is
    // implicitly tested at the testNormal() test. Here we tell
    // file_save_upload() to only allow ".foo".
    $extensions = 'foo';
    $edit = array(
      'file_test_replace' => FILE_EXISTS_REPLACE,
      'files[file_test_upload]' => drupal_realpath($this->image->uri),
      'extensions' => $extensions,
    );

    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $message = t('Only files with the following extensions are allowed: ') . '<em class="placeholder">' . $extensions . '</em>';
    $this->assertRaw($message, t('Can\'t upload a disallowed extension'));
    $this->assertRaw(t('Epic upload FAIL!'), t('Found the failure message.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('validate'));

    // Reset the hook counters.
    file_test_reset();

    $extensions = 'foo ' . $this->image_extension;
    // Now tell file_save_upload() to allow the extension of our test image.
    $edit = array(
      'file_test_replace' => FILE_EXISTS_REPLACE,
      'files[file_test_upload]' => drupal_realpath($this->image->uri),
      'extensions' => $extensions,
    );

    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertNoRaw(t('Only files with the following extensions are allowed:'), t('Can upload an allowed extension.'));
    $this->assertRaw(t('You WIN!'), t('Found the success message.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('validate', 'load', 'update'));

    // Reset the hook counters.
    file_test_reset();

    // Now tell file_save_upload() to allow any extension.
    $edit = array(
      'file_test_replace' => FILE_EXISTS_REPLACE,
      'files[file_test_upload]' => drupal_realpath($this->image->uri),
      'allow_all_extensions' => TRUE,
    );
    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertNoRaw(t('Only files with the following extensions are allowed:'), t('Can upload any extension.'));
    $this->assertRaw(t('You WIN!'), t('Found the success message.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('validate', 'load', 'update'));
  }

  /**
   * Test dangerous file handling.
   */
  function testHandleDangerousFile() {
    // Allow the .php extension and make sure it gets renamed to .txt for
    // safety. Also check to make sure its MIME type was changed.
    $edit = array(
      'file_test_replace' => FILE_EXISTS_REPLACE,
      'files[file_test_upload]' => drupal_realpath($this->phpfile->uri),
      'is_image_file' => FALSE,
      'extensions' => 'php',
    );

    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $message = t('For security reasons, your upload has been renamed to ') . '<em class="placeholder">' . $this->phpfile->filename . '.txt' . '</em>';
    $this->assertRaw($message, t('Dangerous file was renamed.'));
    $this->assertRaw(t('File MIME type is text/plain.'), t('Dangerous file\'s MIME type was changed.'));
    $this->assertRaw(t('You WIN!'), t('Found the success message.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('validate', 'insert'));

    // Ensure dangerous files are not renamed when insecure uploads is TRUE.
    // Turn on insecure uploads.
    variable_set('allow_insecure_uploads', 1);
    // Reset the hook counters.
    file_test_reset();

    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertNoRaw(t('For security reasons, your upload has been renamed'), t('Found no security message.'));
    $this->assertRaw(t('File name is !filename', array('!filename' => $this->phpfile->filename)), t('Dangerous file was not renamed when insecure uploads is TRUE.'));
    $this->assertRaw(t('You WIN!'), t('Found the success message.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('validate', 'insert'));

    // Turn off insecure uploads.
    variable_set('allow_insecure_uploads', 0);
  }

  /**
   * Test file munge handling.
   */
  function testHandleFileMunge() {
    // Ensure insecure uploads are disabled for this test.
    variable_set('allow_insecure_uploads', 0);
    $this->image = file_move($this->image, $this->image->uri . '.foo.' . $this->image_extension);

    // Reset the hook counters to get rid of the 'move' we just called.
    file_test_reset();

    $extensions = $this->image_extension;
    $edit = array(
      'files[file_test_upload]' => drupal_realpath($this->image->uri),
      'extensions' => $extensions,
    );

    $munged_filename = $this->image->filename;
    $munged_filename = substr($munged_filename, 0, strrpos($munged_filename, '.'));
    $munged_filename .= '_.' . $this->image_extension;

    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertRaw(t('For security reasons, your upload has been renamed'), t('Found security message.'));
    $this->assertRaw(t('File name is !filename', array('!filename' => $munged_filename)), t('File was successfully munged.'));
    $this->assertRaw(t('You WIN!'), t('Found the success message.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('validate', 'insert'));

    // Ensure we don't munge files if we're allowing any extension.
    // Reset the hook counters.
    file_test_reset();

    $edit = array(
      'files[file_test_upload]' => drupal_realpath($this->image->uri),
      'allow_all_extensions' => TRUE,
    );

    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertNoRaw(t('For security reasons, your upload has been renamed'), t('Found no security message.'));
    $this->assertRaw(t('File name is !filename', array('!filename' => $this->image->filename)), t('File was not munged when allowing any extension.'));
    $this->assertRaw(t('You WIN!'), t('Found the success message.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('validate', 'insert'));
  }

  /**
   * Test renaming when uploading over a file that already exists.
   */
  function testExistingRename() {
    $edit = array(
      'file_test_replace' => FILE_EXISTS_RENAME,
      'files[file_test_upload]' => drupal_realpath($this->image->uri)
    );
    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertRaw(t('You WIN!'), t('Found the success message.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('validate', 'insert'));
  }

  /**
   * Test replacement when uploading over a file that already exists.
   */
  function testExistingReplace() {
    $edit = array(
      'file_test_replace' => FILE_EXISTS_REPLACE,
      'files[file_test_upload]' => drupal_realpath($this->image->uri)
    );
    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertRaw(t('You WIN!'), t('Found the success message.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('validate', 'load', 'update'));
  }

  /**
   * Test for failure when uploading over a file that already exists.
   */
  function testExistingError() {
    $edit = array(
      'file_test_replace' => FILE_EXISTS_ERROR,
      'files[file_test_upload]' => drupal_realpath($this->image->uri)
    );
    $this->drupalPost('file-test/upload', $edit, t('Submit'));
    $this->assertResponse(200, t('Received a 200 response for posted test file.'));
    $this->assertRaw(t('Epic upload FAIL!'), t('Found the failure message.'));

    // Check that the no hooks were called while failing.
    $this->assertFileHooksCalled(array());
  }

  /**
   * Test for no failures when not uploading a file.
   */
  function testNoUpload() {
    $this->drupalPost('file-test/upload', array(), t('Submit'));
    $this->assertNoRaw(t('Epic upload FAIL!'), t('Failure message not found.'));
  }
}

/**
 * Directory related tests.
 */
class FileDirectoryTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File paths and directories',
      'description' => 'Tests operations dealing with directories.',
      'group' => 'File API',
    );
  }

  /**
   * Test directory handling functions.
   */
  function testFileCheckDirectoryHandling() {
    // A directory to operate on.
    $directory = file_stream_wrapper_get_instance_by_scheme(file_default_scheme())->getDirectoryPath() . '/' . $this->randomName() . '/' . $this->randomName();
    $this->assertFalse(is_dir($directory), t('Directory does not exist prior to testing.'));

    // Non-existent directory.
    $this->assertFalse(file_prepare_directory($directory, 0), t('Error reported for non-existing directory.'), 'File');

    // Make a directory.
    $this->assertTrue(file_prepare_directory($directory, FILE_CREATE_DIRECTORY), t('No error reported when creating a new directory.'), 'File');

    // Make sure directory actually exists.
    $this->assertTrue(is_dir($directory), t('Directory actually exists.'), 'File');

    if (substr(PHP_OS, 0, 3) != 'WIN') {
      // PHP on Windows doesn't support any kind of useful read-only mode for
      // directories. When executing a chmod() on a directory, PHP only sets the
      // read-only flag, which doesn't prevent files to actually be written
      // in the directory on any recent version of Windows.

      // Make directory read only.
      @drupal_chmod($directory, 0444);
      $this->assertFalse(file_prepare_directory($directory, 0), t('Error reported for a non-writeable directory.'), 'File');

      // Test directory permission modification.
      $this->assertTrue(file_prepare_directory($directory, FILE_MODIFY_PERMISSIONS), t('No error reported when making directory writeable.'), 'File');
    }

    // Test that the directory has the correct permissions.
    $this->assertDirectoryPermissions($directory, variable_get('file_chmod_directory', 0775));

    // Remove .htaccess file to then test that it gets re-created.
    @drupal_unlink(file_default_scheme() . '://.htaccess');
    $this->assertFalse(is_file(file_default_scheme() . '://.htaccess'), t('Successfully removed the .htaccess file in the files directory.'), 'File');
    file_ensure_htaccess();
    $this->assertTrue(is_file(file_default_scheme() . '://.htaccess'), t('Successfully re-created the .htaccess file in the files directory.'), 'File');
    // Verify contents of .htaccess file.
    $file = file_get_contents(file_default_scheme() . '://.htaccess');
    $this->assertEqual($file, "SetHandler Drupal_Security_Do_Not_Remove_See_SA_2006_006\nOptions None\nOptions +FollowSymLinks", t('The .htaccess file contains the proper content.'), 'File');
  }

  /**
   * This will take a directory and path, and find a valid filepath that is not
   * taken by another file.
   */
  function testFileCreateNewFilepath() {
    // First we test against an imaginary file that does not exist in a
    // directory.
    $basename = 'xyz.txt';
    $directory = 'misc';
    $original = $directory . '/' . $basename;
    $path = file_create_filename($basename, $directory);
    $this->assertEqual($path, $original, t('New filepath %new equals %original.', array('%new' => $path, '%original' => $original)), 'File');

    // Then we test against a file that already exists within that directory.
    $basename = 'druplicon.png';
    $original = $directory . '/' . $basename;
    $expected = $directory . '/druplicon_0.png';
    $path = file_create_filename($basename, $directory);
    $this->assertEqual($path, $expected, t('Creating a new filepath from %original equals %new.', array('%new' => $path, '%original' => $original)), 'File');

    // @TODO: Finally we copy a file into a directory several times, to ensure a properly iterating filename suffix.
  }

  /**
   * This will test the filepath for a destination based on passed flags and
   * whether or not the file exists.
   *
   * If a file exists, file_destination($destination, $replace) will either
   * return:
   * - the existing filepath, if $replace is FILE_EXISTS_REPLACE
   * - a new filepath if FILE_EXISTS_RENAME
   * - an error (returning FALSE) if FILE_EXISTS_ERROR.
   * If the file doesn't currently exist, then it will simply return the
   * filepath.
   */
  function testFileDestination() {
    // First test for non-existent file.
    $destination = 'misc/xyz.txt';
    $path = file_destination($destination, FILE_EXISTS_REPLACE);
    $this->assertEqual($path, $destination, t('Non-existing filepath destination is correct with FILE_EXISTS_REPLACE.'), 'File');
    $path = file_destination($destination, FILE_EXISTS_RENAME);
    $this->assertEqual($path, $destination, t('Non-existing filepath destination is correct with FILE_EXISTS_RENAME.'), 'File');
    $path = file_destination($destination, FILE_EXISTS_ERROR);
    $this->assertEqual($path, $destination, t('Non-existing filepath destination is correct with FILE_EXISTS_ERROR.'), 'File');

    $destination = 'misc/druplicon.png';
    $path = file_destination($destination, FILE_EXISTS_REPLACE);
    $this->assertEqual($path, $destination, t('Existing filepath destination remains the same with FILE_EXISTS_REPLACE.'), 'File');
    $path = file_destination($destination, FILE_EXISTS_RENAME);
    $this->assertNotEqual($path, $destination, t('A new filepath destination is created when filepath destination already exists with FILE_EXISTS_RENAME.'), 'File');
    $path = file_destination($destination, FILE_EXISTS_ERROR);
    $this->assertEqual($path, FALSE, t('An error is returned when filepath destination already exists with FILE_EXISTS_ERROR.'), 'File');
  }

  /**
   * Ensure that the file_directory_temp() function always returns a value.
   */
  function testFileDirectoryTemp() {
    // Start with an empty variable to ensure we have a clean slate.
    variable_set('file_temporary_path', '');
    $tmp_directory = file_directory_temp();
    $this->assertEqual(empty($tmp_directory), FALSE, t('file_directory_temp() returned a non-empty value.'));
    $setting = variable_get('file_temporary_path', '');
    $this->assertEqual($setting, $tmp_directory, t("The 'file_temporary_path' variable has the same value that file_directory_temp() returned."));
  }
}

/**
 * Tests the file_scan_directory() function.
 */
class FileScanDirectoryTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File scan directory',
      'description' => 'Tests the file_scan_directory() function.',
      'group' => 'File API',
    );
  }

  function setUp() {
    parent::setUp();
    $this->path = drupal_get_path('module', 'simpletest') . '/files';
  }

  /**
   * Check the format of the returned values.
   */
  function testReturn() {
    // Grab a listing of all the JavaSscript files and check that they're
    // passed to the callback.
    $all_files = file_scan_directory($this->path, '/^javascript-/');
    ksort($all_files);
    $this->assertEqual(2, count($all_files), t('Found two, expected javascript files.'));

    // Check the first file.
    $file = reset($all_files);
    $this->assertEqual(key($all_files), $file->uri, t('Correct array key was used for the first returned file.'));
    $this->assertEqual($file->uri, $this->path . '/javascript-1.txt', t('First file name was set correctly.'));
    $this->assertEqual($file->filename, 'javascript-1.txt', t('First basename was set correctly'));
    $this->assertEqual($file->name, 'javascript-1', t('First name was set correctly.'));

    // Check the second file.
    $file = next($all_files);
    $this->assertEqual(key($all_files), $file->uri, t('Correct array key was used for the second returned file.'));
    $this->assertEqual($file->uri, $this->path . '/javascript-2.script', t('Second file name was set correctly.'));
    $this->assertEqual($file->filename, 'javascript-2.script', t('Second basename was set correctly'));
    $this->assertEqual($file->name, 'javascript-2', t('Second name was set correctly.'));
  }

  /**
   * Check that the callback function is called correctly.
   */
  function testOptionCallback() {
    // When nothing is matched nothing should be passed to the callback.
    $all_files = file_scan_directory($this->path, '/^NONEXISTINGFILENAME/', array('callback' => 'file_test_file_scan_callback'));
    $this->assertEqual(0, count($all_files), t('No files were found.'));
    $results = file_test_file_scan_callback();
    file_test_file_scan_callback_reset();
    $this->assertEqual(0, count($results), t('No files were passed to the callback.'));

    // Grab a listing of all the JavaSscript files and check that they're
    // passed to the callback.
    $all_files = file_scan_directory($this->path, '/^javascript-/', array('callback' => 'file_test_file_scan_callback'));
    $this->assertEqual(2, count($all_files), t('Found two, expected javascript files.'));
    $results = file_test_file_scan_callback();
    file_test_file_scan_callback_reset();
    $this->assertEqual(2, count($results), t('Files were passed to the callback.'));
  }

  /**
   * Check that the no-mask parameter is honored.
   */
  function testOptionNoMask() {
    // Grab a listing of all the JavaSscript files.
    $all_files = file_scan_directory($this->path, '/^javascript-/');
    $this->assertEqual(2, count($all_files), t('Found two, expected javascript files.'));

    // Now use the nomast parameter to filter out the .script file.
    $filtered_files = file_scan_directory($this->path, '/^javascript-/', array('nomask' => '/.script$/'));
    $this->assertEqual(1, count($filtered_files), t('Filtered correctly.'));
  }

  /**
   * Check that key parameter sets the return value's key.
   */
  function testOptionKey() {
    // "filename", for the path starting with $dir.
    $expected = array($this->path . '/javascript-1.txt', $this->path . '/javascript-2.script');
    $actual = array_keys(file_scan_directory($this->path, '/^javascript-/', array('key' => 'filepath')));
    sort($actual);
    $this->assertEqual($expected, $actual, t('Returned the correct values for the filename key.'));

    // "basename", for the basename of the file.
    $expected = array('javascript-1.txt', 'javascript-2.script');
    $actual = array_keys(file_scan_directory($this->path, '/^javascript-/', array('key' => 'filename')));
    sort($actual);
    $this->assertEqual($expected, $actual, t('Returned the correct values for the basename key.'));

    // "name" for the name of the file without an extension.
    $expected = array('javascript-1', 'javascript-2');
    $actual = array_keys(file_scan_directory($this->path, '/^javascript-/', array('key' => 'name')));
    sort($actual);
    $this->assertEqual($expected, $actual, t('Returned the correct values for the name key.'));

    // Invalid option that should default back to "filename".
    $expected = array($this->path . '/javascript-1.txt', $this->path . '/javascript-2.script');
    $actual = array_keys(file_scan_directory($this->path, '/^javascript-/', array('key' => 'INVALID')));
    sort($actual);
    $this->assertEqual($expected, $actual, t('An invalid key defaulted back to the default.'));
  }

  /**
   * Check that the recurse option decends into subdirectories.
   */
  function testOptionRecurse() {
    $files = file_scan_directory(drupal_get_path('module', 'simpletest'), '/^javascript-/', array('recurse' => FALSE));
    $this->assertTrue(empty($files), t("Without recursion couldn't find javascript files."));

    $files = file_scan_directory(drupal_get_path('module', 'simpletest'), '/^javascript-/', array('recurse' => TRUE));
    $this->assertEqual(2, count($files), t('With recursion we found the expected javascript files.'));
  }


  /**
   * Check that the min_depth options lets us ignore files in the starting
   * directory.
   */
  function testOptionMinDepth() {
    $files = file_scan_directory($this->path, '/^javascript-/', array('min_depth' => 0));
    $this->assertEqual(2, count($files), t('No minimum-depth gets files in current directory.'));

    $files = file_scan_directory($this->path, '/^javascript-/', array('min_depth' => 1));
    $this->assertTrue(empty($files), t("Minimum-depth of 1 successfully excludes files from current directory."));
  }
}


/**
 * Deletion related tests.
 */
class FileUnmanagedDeleteTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Unmanaged file delete',
      'description' => 'Tests the unmanaged file delete function.',
      'group' => 'File API',
    );
  }

  /**
   * Delete a normal file.
   */
  function testNormal() {
    // Create a file for testing
    $file = $this->createFile();

    // Delete a regular file
    $this->assertTrue(file_unmanaged_delete($file->uri), t('Deleted worked.'));
    $this->assertFalse(file_exists($file->uri), t('Test file has actually been deleted.'));
  }

  /**
   * Try deleting a missing file.
   */
  function testMissing() {
    // Try to delete a non-existing file
    $this->assertTrue(file_unmanaged_delete(file_default_scheme() . '/' . $this->randomName()), t('Returns true when deleting a non-existent file.'));
  }

  /**
   * Try deleting a directory.
   */
  function testDirectory() {
    // A directory to operate on.
    $directory = $this->createDirectory();

    // Try to delete a directory
    $this->assertFalse(file_unmanaged_delete($directory), t('Could not delete the delete directory.'));
    $this->assertTrue(file_exists($directory), t('Directory has not been deleted.'));
  }
}


/**
 * Deletion related tests.
 */
class FileUnmanagedDeleteRecursiveTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Unmanaged recursive file delete',
      'description' => 'Tests the unmanaged file delete recursive function.',
      'group' => 'File API',
    );
  }

  /**
   * Delete a normal file.
   */
  function testSingleFile() {
    // Create a file for testing
    $filepath = file_default_scheme() . '://' . $this->randomName();
    file_put_contents($filepath, '');

    // Delete the file.
    $this->assertTrue(file_unmanaged_delete_recursive($filepath), t('Function reported success.'));
    $this->assertFalse(file_exists($filepath), t('Test file has been deleted.'));
  }

  /**
   * Try deleting an empty directory.
   */
  function testEmptyDirectory() {
    // A directory to operate on.
    $directory = $this->createDirectory();

    // Delete the directory.
    $this->assertTrue(file_unmanaged_delete_recursive($directory), t('Function reported success.'));
    $this->assertFalse(file_exists($directory), t('Directory has been deleted.'));
  }

  /**
   * Try deleting a directory with some files.
   */
  function testDirectory() {
    // A directory to operate on.
    $directory = $this->createDirectory();
    $filepathA = $directory . '/A';
    $filepathB = $directory . '/B';
    file_put_contents($filepathA, '');
    file_put_contents($filepathB, '');

    // Delete the directory.
    $this->assertTrue(file_unmanaged_delete_recursive($directory), t('Function reported success.'));
    $this->assertFalse(file_exists($filepathA), t('Test file A has been deleted.'));
    $this->assertFalse(file_exists($filepathB), t('Test file B has been deleted.'));
    $this->assertFalse(file_exists($directory), t('Directory has been deleted.'));
  }

  /**
   * Try deleting subdirectories with some files.
   */
  function testSubDirectory() {
    // A directory to operate on.
    $directory = $this->createDirectory();
    $subdirectory = $this->createDirectory($directory . '/sub');
    $filepathA = $directory . '/A';
    $filepathB = $subdirectory . '/B';
    file_put_contents($filepathA, '');
    file_put_contents($filepathB, '');

    // Delete the directory.
    $this->assertTrue(file_unmanaged_delete_recursive($directory), t('Function reported success.'));
    $this->assertFalse(file_exists($filepathA), t('Test file A has been deleted.'));
    $this->assertFalse(file_exists($filepathB), t('Test file B has been deleted.'));
    $this->assertFalse(file_exists($subdirectory), t('Subdirectory has been deleted.'));
    $this->assertFalse(file_exists($directory), t('Directory has been deleted.'));
  }
}


/**
 * Unmanaged move related tests.
 */
class FileUnmanagedMoveTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Unmanaged file moving',
      'description' => 'Tests the unmanaged file move function.',
      'group' => 'File API',
    );
  }

  /**
   * Move a normal file.
   */
  function testNormal() {
    // Create a file for testing
    $file = $this->createFile();

    // Moving to a new name.
    $desired_filepath = 'public://' . $this->randomName();
    $new_filepath = file_unmanaged_move($file->uri, $desired_filepath, FILE_EXISTS_ERROR);
    $this->assertTrue($new_filepath, t('Move was successful.'));
    $this->assertEqual($new_filepath, $desired_filepath, t('Returned expected filepath.'));
    $this->assertTrue(file_exists($new_filepath), t('File exists at the new location.'));
    $this->assertFalse(file_exists($file->uri), t('No file remains at the old location.'));
    $this->assertFilePermissions($new_filepath, variable_get('file_chmod_file', 0664));

    // Moving with rename.
    $desired_filepath = 'public://' . $this->randomName();
    $this->assertTrue(file_exists($new_filepath), t('File exists before moving.'));
    $this->assertTrue(file_put_contents($desired_filepath, ' '), t('Created a file so a rename will have to happen.'));
    $newer_filepath = file_unmanaged_move($new_filepath, $desired_filepath, FILE_EXISTS_RENAME);
    $this->assertTrue($newer_filepath, t('Move was successful.'));
    $this->assertNotEqual($newer_filepath, $desired_filepath, t('Returned expected filepath.'));
    $this->assertTrue(file_exists($newer_filepath), t('File exists at the new location.'));
    $this->assertFalse(file_exists($new_filepath), t('No file remains at the old location.'));
    $this->assertFilePermissions($newer_filepath, variable_get('file_chmod_file', 0664));

    // TODO: test moving to a directory (rather than full directory/file path)
    // TODO: test creating and moving normal files (rather than streams)
  }

  /**
   * Try to move a missing file.
   */
  function testMissing() {
    // Move non-existent file.
    $new_filepath = file_unmanaged_move($this->randomName(), $this->randomName());
    $this->assertFalse($new_filepath, t('Moving a missing file fails.'));
  }

  /**
   * Try to move a file onto itself.
   */
  function testOverwriteSelf() {
    // Create a file for testing.
    $file = $this->createFile();

    // Move the file onto itself without renaming shouldn't make changes.
    $new_filepath = file_unmanaged_move($file->uri, $file->uri, FILE_EXISTS_REPLACE);
    $this->assertFalse($new_filepath, t('Moving onto itself without renaming fails.'));
    $this->assertTrue(file_exists($file->uri), t('File exists after moving onto itself.'));

    // Move the file onto itself with renaming will result in a new filename.
    $new_filepath = file_unmanaged_move($file->uri, $file->uri, FILE_EXISTS_RENAME);
    $this->assertTrue($new_filepath, t('Moving onto itself with renaming works.'));
    $this->assertFalse(file_exists($file->uri), t('Original file has been removed.'));
    $this->assertTrue(file_exists($new_filepath), t('File exists after moving onto itself.'));
  }
}


/**
 * Unmanaged copy related tests.
 */
class FileUnmanagedCopyTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Unmanaged file copying',
      'description' => 'Tests the unmanaged file copy function.',
      'group' => 'File API',
    );
  }

  /**
   * Copy a normal file.
   */
  function testNormal() {
    // Create a file for testing
    $file = $this->createFile();

    // Copying to a new name.
    $desired_filepath = 'public://' . $this->randomName();
    $new_filepath = file_unmanaged_copy($file->uri, $desired_filepath, FILE_EXISTS_ERROR);
    $this->assertTrue($new_filepath, t('Copy was successful.'));
    $this->assertEqual($new_filepath, $desired_filepath, t('Returned expected filepath.'));
    $this->assertTrue(file_exists($file->uri), t('Original file remains.'));
    $this->assertTrue(file_exists($new_filepath), t('New file exists.'));
    $this->assertFilePermissions($new_filepath, variable_get('file_chmod_file', 0664));

    // Copying with rename.
    $desired_filepath = 'public://' . $this->randomName();
    $this->assertTrue(file_put_contents($desired_filepath, ' '), t('Created a file so a rename will have to happen.'));
    $newer_filepath = file_unmanaged_copy($file->uri, $desired_filepath, FILE_EXISTS_RENAME);
    $this->assertTrue($newer_filepath, t('Copy was successful.'));
    $this->assertNotEqual($newer_filepath, $desired_filepath, t('Returned expected filepath.'));
    $this->assertTrue(file_exists($file->uri), t('Original file remains.'));
    $this->assertTrue(file_exists($newer_filepath), t('New file exists.'));
    $this->assertFilePermissions($newer_filepath, variable_get('file_chmod_file', 0664));

    // TODO: test copying to a directory (rather than full directory/file path)
    // TODO: test copying normal files using normal paths (rather than only streams)
  }

  /**
   * Copy a non-existent file.
   */
  function testNonExistent() {
    // Copy non-existent file
    $desired_filepath = $this->randomName();
    $this->assertFalse(file_exists($desired_filepath), t("Randomly named file doesn't exists."));
    $new_filepath = file_unmanaged_copy($desired_filepath, $this->randomName());
    $this->assertFalse($new_filepath, t('Copying a missing file fails.'));
  }

  /**
   * Copy a file onto itself.
   */
  function testOverwriteSelf() {
    // Create a file for testing
    $file = $this->createFile();

    // Copy the file onto itself with renaming works.
    $new_filepath = file_unmanaged_copy($file->uri, $file->uri, FILE_EXISTS_RENAME);
    $this->assertTrue($new_filepath, t('Copying onto itself with renaming works.'));
    $this->assertNotEqual($new_filepath, $file->uri, t('Copied file has a new name.'));
    $this->assertTrue(file_exists($file->uri), t('Original file exists after copying onto itself.'));
    $this->assertTrue(file_exists($new_filepath), t('Copied file exists after copying onto itself.'));
    $this->assertFilePermissions($new_filepath, variable_get('file_chmod_file', 0664));

    // Copy the file onto itself without renaming fails.
    $new_filepath = file_unmanaged_copy($file->uri, $file->uri, FILE_EXISTS_ERROR);
    $this->assertFalse($new_filepath, t('Copying onto itself without renaming fails.'));
    $this->assertTrue(file_exists($file->uri), t('File exists after copying onto itself.'));

    // Copy the file into same directory without renaming fails.
    $new_filepath = file_unmanaged_copy($file->uri, drupal_dirname($file->uri), FILE_EXISTS_ERROR);
    $this->assertFalse($new_filepath, t('Copying onto itself fails.'));
    $this->assertTrue(file_exists($file->uri), t('File exists after copying onto itself.'));

    // Copy the file into same directory with renaming works.
    $new_filepath = file_unmanaged_copy($file->uri, drupal_dirname($file->uri), FILE_EXISTS_RENAME);
    $this->assertTrue($new_filepath, t('Copying into same directory works.'));
    $this->assertNotEqual($new_filepath, $file->uri, t('Copied file has a new name.'));
    $this->assertTrue(file_exists($file->uri), t('Original file exists after copying onto itself.'));
    $this->assertTrue(file_exists($new_filepath), t('Copied file exists after copying onto itself.'));
    $this->assertFilePermissions($new_filepath, variable_get('file_chmod_file', 0664));
  }
}

/**
 * Deletion related tests.
 */
class FileDeleteTest extends FileHookTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File delete',
      'description' => 'Tests the file delete function.',
      'group' => 'File API',
    );
  }

  /**
   * Tries deleting a normal file (as opposed to a directory, symlink, etc).
   */
  function testUnused() {
    $file = $this->createFile();

    // Check that deletion removes the file and database record.
    $this->assertTrue(is_file($file->uri), t('File exists.'));
    $this->assertIdentical(file_delete($file), TRUE, t('Delete worked.'));
    $this->assertFileHooksCalled(array('delete'));
    $this->assertFalse(file_exists($file->uri), t('Test file has actually been deleted.'));
    $this->assertFalse(file_load($file->fid), t('File was removed from the database.'));
  }

  /**
   * Tries deleting a file that is in use.
   */
  function testInUse() {
    $file = $this->createFile();
    file_usage_add($file, 'testing', 'test', 1);
    file_usage_add($file, 'testing', 'test', 1);

    file_usage_delete($file, 'testing', 'test', 1);
    file_delete($file);
    $usage = file_usage_list($file);
    $this->assertEqual($usage['testing']['test'], array('id' => 1, 'count' => 1), t('Test file is still in use.'));
    $this->assertTrue(file_exists($file->uri), t('File still exists on the disk.'));
    $this->assertTrue(file_load($file->fid), t('File still exists in the database.'));

    // Clear out the call to hook_file_load().
    file_test_reset();

    file_usage_delete($file, 'testing', 'test', 1);
    file_delete($file);
    $usage = file_usage_list($file);
    $this->assertFileHooksCalled(array('delete'));
    $this->assertTrue(empty($usage), t('File usage data was removed.'));
    $this->assertFalse(file_exists($file->uri), t('File has been deleted after its last usage was removed.'));
    $this->assertFalse(file_load($file->fid), t('File was removed from the database.'));
  }
}


/**
 * Move related tests
 */
class FileMoveTest extends FileHookTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File moving',
      'description' => 'Tests the file move function.',
      'group' => 'File API',
    );
  }

  /**
   * Move a normal file.
   */
  function testNormal() {
    $contents = $this->randomName(10);
    $source = $this->createFile(NULL, $contents);
    $desired_filepath = 'public://' . $this->randomName();

    // Clone the object so we don't have to worry about the function changing
    // our reference copy.
    $result = file_move(clone $source, $desired_filepath, FILE_EXISTS_ERROR);

    // Check the return status and that the contents changed.
    $this->assertTrue($result, t('File moved sucessfully.'));
    $this->assertFalse(file_exists($source->uri));
    $this->assertEqual($contents, file_get_contents($result->uri), t('Contents of file correctly written.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('move', 'load', 'update'));

    // Make sure we got the same file back.
    $this->assertEqual($source->fid, $result->fid, t("Source file id's' %fid is unchanged after move.", array('%fid' => $source->fid)));

    // Reload the file from the database and check that the changes were
    // actually saved.
    $loaded_file = file_load($result->fid, TRUE);
    $this->assertTrue($loaded_file, t('File can be loaded from the database.'));
    $this->assertFileUnchanged($result, $loaded_file);
  }

  /**
   * Test renaming when moving onto a file that already exists.
   */
  function testExistingRename() {
    // Setup a file to overwrite.
    $contents = $this->randomName(10);
    $source = $this->createFile(NULL, $contents);
    $target = $this->createFile();
    $this->assertDifferentFile($source, $target);

    // Clone the object so we don't have to worry about the function changing
    // our reference copy.
    $result = file_move(clone $source, $target->uri, FILE_EXISTS_RENAME);

    // Check the return status and that the contents changed.
    $this->assertTrue($result, t('File moved sucessfully.'));
    $this->assertFalse(file_exists($source->uri));
    $this->assertEqual($contents, file_get_contents($result->uri), t('Contents of file correctly written.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('move', 'load', 'update'));

    // Compare the returned value to what made it into the database.
    $this->assertFileUnchanged($result, file_load($result->fid, TRUE));
    // The target file should not have been altered.
    $this->assertFileUnchanged($target, file_load($target->fid, TRUE));
    // Make sure we end up with two distinct files afterwards.
    $this->assertDifferentFile($target, $result);

    // Compare the source and results.
    $loaded_source = file_load($source->fid, TRUE);
    $this->assertEqual($loaded_source->fid, $result->fid, t("Returned file's id matches the source."));
    $this->assertNotEqual($loaded_source->uri, $source->uri, t("Returned file path has changed from the original."));
  }

  /**
   * Test replacement when moving onto a file that already exists.
   */
  function testExistingReplace() {
    // Setup a file to overwrite.
    $contents = $this->randomName(10);
    $source = $this->createFile(NULL, $contents);
    $target = $this->createFile();
    $this->assertDifferentFile($source, $target);

    // Clone the object so we don't have to worry about the function changing
    // our reference copy.
    $result = file_move(clone $source, $target->uri, FILE_EXISTS_REPLACE);

    // Look at the results.
    $this->assertEqual($contents, file_get_contents($result->uri), t('Contents of file were overwritten.'));
    $this->assertFalse(file_exists($source->uri));
    $this->assertTrue($result, t('File moved sucessfully.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('move', 'update', 'delete', 'load'));

    // Reload the file from the database and check that the changes were
    // actually saved.
    $loaded_result = file_load($result->fid, TRUE);
    $this->assertFileUnchanged($result, $loaded_result);
    // Check that target was re-used.
    $this->assertSameFile($target, $loaded_result);
    // Source and result should be totally different.
    $this->assertDifferentFile($source, $loaded_result);
  }

  /**
   * Test replacement when moving onto itself.
   */
  function testExistingReplaceSelf() {
    // Setup a file to overwrite.
    $contents = $this->randomName(10);
    $source = $this->createFile(NULL, $contents);

    // Copy the file over itself. Clone the object so we don't have to worry
    // about the function changing our reference copy.
    $result = file_move(clone $source, $source->uri, FILE_EXISTS_REPLACE);
    $this->assertFalse($result, t('File move failed.'));
    $this->assertEqual($contents, file_get_contents($source->uri), t('Contents of file were not altered.'));

    // Check that no hooks were called while failing.
    $this->assertFileHooksCalled(array());

    // Load the file from the database and make sure it is identical to what
    // was returned.
    $this->assertFileUnchanged($source, file_load($source->fid, TRUE));
  }

  /**
   * Test that moving onto an existing file fails when FILE_EXISTS_ERROR is
   * specified.
   */
  function testExistingError() {
    $contents = $this->randomName(10);
    $source = $this->createFile();
    $target = $this->createFile(NULL, $contents);
    $this->assertDifferentFile($source, $target);

    // Clone the object so we don't have to worry about the function changing
    // our reference copy.
    $result = file_move(clone $source, $target->uri, FILE_EXISTS_ERROR);

    // Check the return status and that the contents did not change.
    $this->assertFalse($result, t('File move failed.'));
    $this->assertTrue(file_exists($source->uri));
    $this->assertEqual($contents, file_get_contents($target->uri), t('Contents of file were not altered.'));

    // Check that no hooks were called while failing.
    $this->assertFileHooksCalled(array());

    // Load the file from the database and make sure it is identical to what
    // was returned.
    $this->assertFileUnchanged($source, file_load($source->fid, TRUE));
    $this->assertFileUnchanged($target, file_load($target->fid, TRUE));
  }
}


/**
 * Copy related tests.
 */
class FileCopyTest extends FileHookTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File copying',
      'description' => 'Tests the file copy function.',
      'group' => 'File API',
    );
  }

  /**
   * Test file copying in the normal, base case.
   */
  function testNormal() {
    $contents = $this->randomName(10);
    $source = $this->createFile(NULL, $contents);
    $desired_uri = 'public://' . $this->randomName();

    // Clone the object so we don't have to worry about the function changing
    // our reference copy.
    $result = file_copy(clone $source, $desired_uri, FILE_EXISTS_ERROR);

    // Check the return status and that the contents changed.
    $this->assertTrue($result, t('File copied sucessfully.'));
    $this->assertEqual($contents, file_get_contents($result->uri), t('Contents of file were copied correctly.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('copy', 'insert'));

    $this->assertDifferentFile($source, $result);
    $this->assertEqual($result->uri, $desired_uri, t('The copied file object has the desired filepath.'));
    $this->assertTrue(file_exists($source->uri), t('The original file still exists.'));
    $this->assertTrue(file_exists($result->uri), t('The copied file exists.'));

    // Reload the file from the database and check that the changes were
    // actually saved.
    $this->assertFileUnchanged($result, file_load($result->fid, TRUE));
  }

  /**
   * Test renaming when copying over a file that already exists.
   */
  function testExistingRename() {
    // Setup a file to overwrite.
    $contents = $this->randomName(10);
    $source = $this->createFile(NULL, $contents);
    $target = $this->createFile();
    $this->assertDifferentFile($source, $target);

    // Clone the object so we don't have to worry about the function changing
    // our reference copy.
    $result = file_copy(clone $source, $target->uri, FILE_EXISTS_RENAME);

    // Check the return status and that the contents changed.
    $this->assertTrue($result, t('File copied sucessfully.'));
    $this->assertEqual($contents, file_get_contents($result->uri), t('Contents of file were copied correctly.'));
    $this->assertNotEqual($result->uri, $source->uri, t('Returned file path has changed from the original.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('copy', 'insert'));

    // Load all the affected files to check the changes that actually made it
    // to the database.
    $loaded_source = file_load($source->fid, TRUE);
    $loaded_target = file_load($target->fid, TRUE);
    $loaded_result = file_load($result->fid, TRUE);

    // Verify that the source file wasn't changed.
    $this->assertFileUnchanged($source, $loaded_source);

    // Verify that what was returned is what's in the database.
    $this->assertFileUnchanged($result, $loaded_result);

    // Make sure we end up with three distinct files afterwards.
    $this->assertDifferentFile($loaded_source, $loaded_target);
    $this->assertDifferentFile($loaded_target, $loaded_result);
    $this->assertDifferentFile($loaded_source, $loaded_result);
  }

  /**
   * Test replacement when copying over a file that already exists.
   */
  function testExistingReplace() {
    // Setup a file to overwrite.
    $contents = $this->randomName(10);
    $source = $this->createFile(NULL, $contents);
    $target = $this->createFile();
    $this->assertDifferentFile($source, $target);

    // Clone the object so we don't have to worry about the function changing
    // our reference copy.
    $result = file_copy(clone $source, $target->uri, FILE_EXISTS_REPLACE);

    // Check the return status and that the contents changed.
    $this->assertTrue($result, t('File copied sucessfully.'));
    $this->assertEqual($contents, file_get_contents($result->uri), t('Contents of file were overwritten.'));
    $this->assertDifferentFile($source, $result);

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('load', 'copy', 'update'));

    // Load all the affected files to check the changes that actually made it
    // to the database.
    $loaded_source = file_load($source->fid, TRUE);
    $loaded_target = file_load($target->fid, TRUE);
    $loaded_result = file_load($result->fid, TRUE);

    // Verify that the source file wasn't changed.
    $this->assertFileUnchanged($source, $loaded_source);

    // Verify that what was returned is what's in the database.
    $this->assertFileUnchanged($result, $loaded_result);

    // Target file was reused for the result.
    $this->assertFileUnchanged($loaded_target, $loaded_result);
  }

  /**
   * Test that copying over an existing file fails when FILE_EXISTS_ERROR is
   * specified.
   */
  function testExistingError() {
    $contents = $this->randomName(10);
    $source = $this->createFile();
    $target = $this->createFile(NULL, $contents);
    $this->assertDifferentFile($source, $target);

    // Clone the object so we don't have to worry about the function changing
    // our reference copy.
    $result = file_copy(clone $source, $target->uri, FILE_EXISTS_ERROR);

    // Check the return status and that the contents were not changed.
    $this->assertFalse($result, t('File copy failed.'));
    $this->assertEqual($contents, file_get_contents($target->uri), t('Contents of file were not altered.'));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array());

    $this->assertFileUnchanged($source, file_load($source->fid, TRUE));
    $this->assertFileUnchanged($target, file_load($target->fid, TRUE));
  }
}


/**
 * Tests the file_load() function.
 */
class FileLoadTest extends FileHookTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File loading',
      'description' => 'Tests the file_load() function.',
      'group' => 'File API',
    );
  }

  /**
   * Try to load a non-existent file by fid.
   */
  function testLoadMissingFid() {
    $this->assertFalse(file_load(-1), t("Try to load an invalid fid fails."));
    $this->assertFileHooksCalled(array());
  }

  /**
   * Try to load a non-existent file by URI.
   */
  function testLoadMissingFilepath() {
    $files = file_load_multiple(array(), array('uri' => 'foobar://misc/druplicon.png'));
    $this->assertFalse(reset($files), t("Try to load a file that doesn't exist in the database fails."));
    $this->assertFileHooksCalled(array());
  }

  /**
   * Try to load a non-existent file by status.
   */
  function testLoadInvalidStatus() {
    $files = file_load_multiple(array(), array('status' => -99));
    $this->assertFalse(reset($files), t("Trying to load a file with an invalid status fails."));
    $this->assertFileHooksCalled(array());
  }

  /**
   * Load a single file and ensure that the correct values are returned.
   */
  function testSingleValues() {
    // Create a new file object from scratch so we know the values.
    $file = $this->createFile('druplicon.txt', NULL, 'public');

    $by_fid_file = file_load($file->fid);
    $this->assertFileHookCalled('load');
    $this->assertTrue(is_object($by_fid_file), t('file_load() returned an object.'));
    $this->assertEqual($by_fid_file->fid, $file->fid, t("Loading by fid got the same fid."), 'File');
    $this->assertEqual($by_fid_file->uri, $file->uri, t("Loading by fid got the correct filepath."), 'File');
    $this->assertEqual($by_fid_file->filename, $file->filename, t("Loading by fid got the correct filename."), 'File');
    $this->assertEqual($by_fid_file->filemime, $file->filemime, t("Loading by fid got the correct MIME type."), 'File');
    $this->assertEqual($by_fid_file->status, $file->status, t("Loading by fid got the correct status."), 'File');
    $this->assertTrue($by_fid_file->file_test['loaded'], t('file_test_file_load() was able to modify the file during load.'));
  }

  /**
   * This will test loading file data from the database.
   */
  function testMultiple() {
    // Create a new file object.
    $file = $this->createFile('druplicon.txt', NULL, 'public');

    // Load by path.
    file_test_reset();
    $by_path_files = file_load_multiple(array(), array('uri' => $file->uri));
    $this->assertFileHookCalled('load');
    $this->assertEqual(1, count($by_path_files), t('file_load_multiple() returned an array of the correct size.'));
    $by_path_file = reset($by_path_files);
    $this->assertTrue($by_path_file->file_test['loaded'], t('file_test_file_load() was able to modify the file during load.'));
    $this->assertEqual($by_path_file->fid, $file->fid, t("Loading by filepath got the correct fid."), 'File');

    // Load by fid.
    file_test_reset();
    $by_fid_files = file_load_multiple(array($file->fid), array());
    $this->assertFileHookCalled('load');
    $this->assertEqual(1, count($by_fid_files), t('file_load_multiple() returned an array of the correct size.'));
    $by_fid_file = reset($by_fid_files);
    $this->assertTrue($by_fid_file->file_test['loaded'], t('file_test_file_load() was able to modify the file during load.'));
    $this->assertEqual($by_fid_file->uri, $file->uri, t("Loading by fid got the correct filepath."), 'File');
  }
}

/**
 * Tests the file_save() function.
 */
class FileSaveTest extends FileHookTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File saving',
      'description' => 'Tests the file_save() function.',
      'group' => 'File API',
    );
  }

  function testFileSave() {
    // Create a new file object.
    $file = array(
      'uid' => 1,
      'filename' => 'druplicon.txt',
      'uri' => 'public://druplicon.txt',
      'filemime' => 'text/plain',
      'timestamp' => 1,
      'status' => FILE_STATUS_PERMANENT,
    );
    $file = (object) $file;
    file_put_contents($file->uri, 'hello world');

    // Save it, inserting a new record.
    $saved_file = file_save($file);

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('insert'));

    $this->assertNotNull($saved_file, t("Saving the file should give us back a file object."), 'File');
    $this->assertTrue($saved_file->fid > 0, t("A new file ID is set when saving a new file to the database."), 'File');
    $loaded_file = db_query('SELECT * FROM {file_managed} f WHERE f.fid = :fid', array(':fid' => $saved_file->fid))->fetch(PDO::FETCH_OBJ);
    $this->assertNotNull($loaded_file, t("Record exists in the database."));
    $this->assertEqual($loaded_file->status, $file->status, t("Status was saved correctly."));
    $this->assertEqual($saved_file->filesize, filesize($file->uri), t("File size was set correctly."), 'File');
    $this->assertTrue($saved_file->timestamp > 1, t("File size was set correctly."), 'File');


    // Resave the file, updating the existing record.
    file_test_reset();
    $saved_file->status = 7;
    $resaved_file = file_save($saved_file);

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('load', 'update'));

    $this->assertEqual($resaved_file->fid, $saved_file->fid, t("The file ID of an existing file is not changed when updating the database."), 'File');
    $this->assertTrue($resaved_file->timestamp >= $saved_file->timestamp, t("Timestamp didn't go backwards."), 'File');
    $loaded_file = db_query('SELECT * FROM {file_managed} f WHERE f.fid = :fid', array(':fid' => $saved_file->fid))->fetch(PDO::FETCH_OBJ);
    $this->assertNotNull($loaded_file, t("Record still exists in the database."), 'File');
    $this->assertEqual($loaded_file->status, $saved_file->status, t("Status was saved correctly."));
  }
}

/**
 * Tests file usage functions.
 */
class FileUsageTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File usage',
      'description' => 'Tests the file usage functions.',
      'group' => 'File',
    );
  }

  /**
   * Tests file_usage_list().
   */
  function testGetUsage() {
    $file = $this->createFile();
    db_insert('file_usage')
      ->fields(array(
        'fid' => $file->fid,
        'module' => 'testing',
        'type' => 'foo',
        'id' => 1,
        'count' => 1
      ))
      ->execute();
    db_insert('file_usage')
      ->fields(array(
        'fid' => $file->fid,
        'module' => 'testing',
        'type' => 'bar',
        'id' => 2,
        'count' => 2
      ))
      ->execute();

    $usage = file_usage_list($file);

    $this->assertEqual(count($usage['testing']), 2, t('Returned the correct number of items.'));
    $this->assertEqual($usage['testing']['foo']['id'], 1, t('Returned the correct id.'));
    $this->assertEqual($usage['testing']['bar']['id'], 2, t('Returned the correct id.'));
    $this->assertEqual($usage['testing']['foo']['count'], 1, t('Returned the correct count.'));
    $this->assertEqual($usage['testing']['bar']['count'], 2, t('Returned the correct count.'));
  }

  /**
   * Tests file_usage_add().
   */
  function testAddUsage() {
    $file = $this->createFile();
    file_usage_add($file, 'testing', 'foo', 1);
    // Add the file twice to ensure that the count is incremented rather than
    // creating additional records.
    file_usage_add($file, 'testing', 'bar', 2);
    file_usage_add($file, 'testing', 'bar', 2);

    $usage = db_select('file_usage', 'f')
      ->fields('f')
      ->condition('f.fid', $file->fid)
      ->execute()
      ->fetchAllAssoc('id');
    $this->assertEqual(count($usage), 2, t('Created two records'));
    $this->assertEqual($usage[1]->module, 'testing', t('Correct module'));
    $this->assertEqual($usage[2]->module, 'testing', t('Correct module'));
    $this->assertEqual($usage[1]->type, 'foo', t('Correct type'));
    $this->assertEqual($usage[2]->type, 'bar', t('Correct type'));
    $this->assertEqual($usage[1]->count, 1, t('Correct count'));
    $this->assertEqual($usage[2]->count, 2, t('Correct count'));
  }

  /**
   * Tests file_usage_delete().
   */
  function testRemoveUsage() {
    $file = $this->createFile();
    db_insert('file_usage')
      ->fields(array(
        'fid' => $file->fid,
        'module' => 'testing',
        'type' => 'bar',
        'id' => 2,
        'count' => 3,
      ))
      ->execute();

    // Normal decrement.
    file_usage_delete($file, 'testing', 'bar', 2);
    $count = db_select('file_usage', 'f')
      ->fields('f', array('count'))
      ->condition('f.fid', $file->fid)
      ->execute()
      ->fetchField();
    $this->assertEqual(2, $count, t('The count was decremented correctly.'));

    // Multiple decrement and removal.
    file_usage_delete($file, 'testing', 'bar', 2, 2);
    $count = db_select('file_usage', 'f')
      ->fields('f', array('count'))
      ->condition('f.fid', $file->fid)
      ->execute()
      ->fetchField();
    $this->assertIdentical(FALSE, $count, t('The count was removed entirely when empty.'));

    // Non-existent decrement.
    file_usage_delete($file, 'testing', 'bar', 2);
    $count = db_select('file_usage', 'f')
      ->fields('f', array('count'))
      ->condition('f.fid', $file->fid)
      ->execute()
      ->fetchField();
    $this->assertIdentical(FALSE, $count, t('Decrementing non-exist record complete.'));
  }
}

/**
 * Tests the file_validate() function..
 */
class FileValidateTest extends FileHookTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File validate',
      'description' => 'Tests the file_validate() function.',
      'group' => 'File API',
    );
  }

  /**
   * Test that the validators passed into are checked.
   */
  function testCallerValidation() {
    $file = $this->createFile();

    // Empty validators.
    $this->assertEqual(file_validate($file, array()), array(), t('Validating an empty array works succesfully.'));
    $this->assertFileHooksCalled(array('validate'));

    // Use the file_test.module's test validator to ensure that passing tests
    // return correctly.
    file_test_reset();
    file_test_set_return('validate', array());
    $passing = array('file_test_validator' => array(array()));
    $this->assertEqual(file_validate($file, $passing), array(), t('Validating passes.'));
    $this->assertFileHooksCalled(array('validate'));

    // Now test for failures in validators passed in and by hook_validate.
    file_test_reset();
    file_test_set_return('validate', array('Epic fail'));
    $failing = array('file_test_validator' => array(array('Failed', 'Badly')));
    $this->assertEqual(file_validate($file, $failing), array('Failed', 'Badly', 'Epic fail'), t('Validating returns errors.'));
    $this->assertFileHooksCalled(array('validate'));
  }
}

/**
 *  Tests the file_save_data() function.
 */
class FileSaveDataTest extends FileHookTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File save data',
      'description' => 'Tests the file save data function.',
      'group' => 'File API',
    );
  }

  /**
   * Test the file_save_data() function when no filename is provided.
   */
  function testWithoutFilename() {
    $contents = $this->randomName(8);

    $result = file_save_data($contents);
    $this->assertTrue($result, t('Unnamed file saved correctly.'));

    $this->assertEqual(file_default_scheme(), file_uri_scheme($result->uri), t("File was placed in Drupal's files directory."));
    $this->assertEqual($result->filename, basename($result->uri), t("Filename was set to the file's basename."));
    $this->assertEqual($contents, file_get_contents($result->uri), t('Contents of the file are correct.'));
    $this->assertEqual($result->filemime, 'application/octet-stream', t('A MIME type was set.'));
    $this->assertEqual($result->status, FILE_STATUS_PERMANENT, t("The file's status was set to permanent."));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('insert'));

    // Verify that what was returned is what's in the database.
    $this->assertFileUnchanged($result, file_load($result->fid, TRUE));
  }

  /**
   * Test the file_save_data() function when a filename is provided.
   */
  function testWithFilename() {
    $contents = $this->randomName(8);

    $result = file_save_data($contents, 'public://' . 'asdf.txt');
    $this->assertTrue($result, t('Unnamed file saved correctly.'));

    $this->assertEqual('public', file_uri_scheme($result->uri), t("File was placed in Drupal's files directory."));
    $this->assertEqual('asdf.txt', basename($result->uri), t('File was named correctly.'));
    $this->assertEqual($contents, file_get_contents($result->uri), t('Contents of the file are correct.'));
    $this->assertEqual($result->filemime, 'text/plain', t('A MIME type was set.'));
    $this->assertEqual($result->status, FILE_STATUS_PERMANENT, t("The file's status was set to permanent."));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('insert'));

    // Verify that what was returned is what's in the database.
    $this->assertFileUnchanged($result, file_load($result->fid, TRUE));
  }

  /**
   * Test file_save_data() when renaming around an existing file.
   */
  function testExistingRename() {
    // Setup a file to overwrite.
    $existing = $this->createFile();
    $contents = $this->randomName(8);

    $result = file_save_data($contents, $existing->uri, FILE_EXISTS_RENAME);
    $this->assertTrue($result, t("File saved sucessfully."));

    $this->assertEqual('public', file_uri_scheme($result->uri), t("File was placed in Drupal's files directory."));
    $this->assertEqual($result->filename, $existing->filename, t("Filename was set to the basename of the source, rather than that of the renamed file."));
    $this->assertEqual($contents, file_get_contents($result->uri), t("Contents of the file are correct."));
    $this->assertEqual($result->filemime, 'application/octet-stream', t("A MIME type was set."));
    $this->assertEqual($result->status, FILE_STATUS_PERMANENT, t("The file's status was set to permanent."));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('insert'));

    // Ensure that the existing file wasn't overwritten.
    $this->assertDifferentFile($existing, $result);
    $this->assertFileUnchanged($existing, file_load($existing->fid, TRUE));

    // Verify that was returned is what's in the database.
    $this->assertFileUnchanged($result, file_load($result->fid, TRUE));
  }

  /**
   * Test file_save_data() when replacing an existing file.
   */
  function testExistingReplace() {
    // Setup a file to overwrite.
    $existing = $this->createFile();
    $contents = $this->randomName(8);

    $result = file_save_data($contents, $existing->uri, FILE_EXISTS_REPLACE);
    $this->assertTrue($result, t('File saved sucessfully.'));

    $this->assertEqual('public', file_uri_scheme($result->uri), t("File was placed in Drupal's files directory."));
    $this->assertEqual($result->filename, $existing->filename, t('Filename was set to the basename of the existing file, rather than preserving the original name.'));
    $this->assertEqual($contents, file_get_contents($result->uri), t('Contents of the file are correct.'));
    $this->assertEqual($result->filemime, 'application/octet-stream', t('A MIME type was set.'));
    $this->assertEqual($result->status, FILE_STATUS_PERMANENT, t("The file's status was set to permanent."));

    // Check that the correct hooks were called.
    $this->assertFileHooksCalled(array('load', 'update'));

    // Verify that the existing file was re-used.
    $this->assertSameFile($existing, $result);

    // Verify that what was returned is what's in the database.
    $this->assertFileUnchanged($result, file_load($result->fid, TRUE));
  }

  /**
   * Test that file_save_data() fails overwriting an existing file.
   */
  function testExistingError() {
    $contents = $this->randomName(8);
    $existing = $this->createFile(NULL, $contents);

    // Check the overwrite error.
    $result = file_save_data('asdf', $existing->uri, FILE_EXISTS_ERROR);
    $this->assertFalse($result, t('Overwriting a file fails when FILE_EXISTS_ERROR is specified.'));
    $this->assertEqual($contents, file_get_contents($existing->uri), t('Contents of existing file were unchanged.'));

    // Check that no hooks were called while failing.
    $this->assertFileHooksCalled(array());

    // Ensure that the existing file wasn't overwritten.
    $this->assertFileUnchanged($existing, file_load($existing->fid, TRUE));
  }
}

/**
 * Tests for download/file transfer functions.
 */
class FileDownloadTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File download',
      'description' => 'Tests for file download/transfer functions.',
      'group' => 'File API',
    );
  }

  function setUp() {
    parent::setUp('file_test');
    // Clear out any hook calls.
    file_test_reset();
  }

  /**
   * Test the public file transfer system.
   */
  function testPublicFileTransfer() {
    // Test generating an URL to a created file.
    $file = $this->createFile();
    $url = file_create_url($file->uri);
    $this->assertEqual($GLOBALS['base_url'] . '/' . file_stream_wrapper_get_instance_by_scheme('public')->getDirectoryPath() . '/' . $file->filename, $url, t('Correctly generated a URL for a created file.'));
    $this->drupalHead($url);
    $this->assertResponse(200, t('Confirmed that the generated URL is correct by downloading the created file.'));

    // Test generating an URL to a shipped file (i.e. a file that is part of
    // Drupal core, a module or a theme, for example a JavaScript file).
    $filepath = 'misc/jquery.js';
    $url = file_create_url($filepath);
    $this->assertEqual($GLOBALS['base_url'] . '/' . $filepath, $url, t('Correctly generated a URL for a shipped file.'));
    $this->drupalHead($url);
    $this->assertResponse(200, t('Confirmed that the generated URL is correct by downloading the shipped file.'));
  }

  /**
   * Test the private file transfer system.
   */
  function testPrivateFileTransfer() {
    // Set file downloads to private so handler functions get called.

    // Create a file.
    $file = $this->createFile(NULL, NULL, 'private');
    $url  = file_create_url($file->uri);

    // Set file_test access header to allow the download.
    file_test_set_return('download', array('x-foo' => 'Bar'));
    $this->drupalHead($url);
    $headers = $this->drupalGetHeaders();
    $this->assertEqual($headers['x-foo'] , 'Bar', t('Found header set by file_test module on private download.'));
    $this->assertResponse(200, t('Correctly allowed access to a file when file_test provides headers.'));

    // Deny access to all downloads via a -1 header.
    file_test_set_return('download', -1);
    $this->drupalHead($url);
    $this->assertResponse(403, t('Correctly denied access to a file when file_test sets the header to -1.'));

    // Try non-existent file.
    $url = file_create_url('private://' . $this->randomName());
    $this->drupalHead($url);
    $this->assertResponse(404, t('Correctly returned 404 response for a non-existent file.'));
  }

  /**
   * Test file_create_url().
   */
  function testFileCreateUrl() {
    global $base_url;

    // Tilde (~) is excluded from this test because it is encoded by
    // rawurlencode() in PHP 5.2 but not in PHP 5.3, as per RFC 3986.
    // @see http://www.php.net/manual/en/function.rawurlencode.php#86506
    $basename = " -._!$'\"()*@[]?&+%#,;=:\n\x00" . // "Special" ASCII characters.
      "%23%25%26%2B%2F%3F" . // Characters that look like a percent-escaped string.
      "éøïвβ中國書۞"; // Characters from various non-ASCII alphabets.
    $basename_encoded = '%20-._%21%24%27%22%28%29%2A%40%5B%5D%3F%26%2B%25%23%2C%3B%3D%3A__' .
      '%2523%2525%2526%252B%252F%253F' .
      '%C3%A9%C3%B8%C3%AF%D0%B2%CE%B2%E4%B8%AD%E5%9C%8B%E6%9B%B8%DB%9E';

    $this->checkUrl('public', '', $basename, $base_url . '/' . file_stream_wrapper_get_instance_by_scheme('public')->getDirectoryPath() . '/' . $basename_encoded);
    $this->checkUrl('private', '', $basename, $base_url . '/system/files/' . $basename_encoded);
    $this->checkUrl('private', '', $basename, $base_url . '/?q=system/files/' . $basename_encoded, '0');
  }

  /**
   * Download a file from the URL generated by file_create_url().
   *
   * Create a file with the specified scheme, directory and filename; check that
   * the URL generated by file_create_url() for the specified file equals the
   * specified URL; fetch the URL and then compare the contents to the file.
   *
   * @param $scheme
   *   A scheme, e.g. "public"
   * @param $directory
   *   A directory, possibly ""
   * @param $filename
   *   A filename
   * @param $expected_url
   *   The expected URL
   * @param $clean_url
   *   The value of the clean_url setting
   */
  private function checkUrl($scheme, $directory, $filename, $expected_url, $clean_url = '1') {
    variable_set('clean_url', $clean_url);

    // Convert $filename to a valid filename, i.e. strip characters not
    // supported by the filesystem, and create the file in the specified
    // directory.
    $filepath = file_create_filename($filename, $directory);
    $directory_uri = $scheme . '://' . dirname($filepath);
    file_prepare_directory($directory_uri, FILE_CREATE_DIRECTORY);
    $file = $this->createFile($filepath, NULL, $scheme);

    $url = file_create_url($file->uri);
    $this->assertEqual($url, $expected_url, t('Generated URL matches expected URL.'));

    if ($scheme == 'private') {
      // Tell the implementation of hook_file_download() in file_test.module
      // that this file may be downloaded.
      file_test_set_return('download', array('x-foo' => 'Bar'));
    }

    $this->drupalGet($url);
    if ($this->assertResponse(200) == 'pass') {
      $this->assertRaw(file_get_contents($file->uri), t('Contents of the file are correct.'));
    }

    file_delete($file);
  }
}

/**
 * Tests for file URL rewriting.
 */
class FileURLRewritingTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File URL rewriting',
      'description' => 'Tests for file URL rewriting.',
      'group' => 'File',
    );
  }

  function setUp() {
    parent::setUp('file_test');
  }

  /**
   * Test the generating of rewritten shipped file URLs.
   */
  function testShippedFileURL()  {
    // Test generating an URL to a shipped file (i.e. a file that is part of
    // Drupal core, a module or a theme, for example a JavaScript file).

    // Test alteration of file URLs to use a CDN.
    variable_set('file_test_hook_file_url_alter', 'cdn');
    $filepath = 'misc/jquery.js';
    $url = file_create_url($filepath);
    $this->assertEqual(FILE_URL_TEST_CDN_1 . '/' . $filepath, $url, t('Correctly generated a CDN URL for a shipped file.'));
    $filepath = 'misc/favicon.ico';
    $url = file_create_url($filepath);
    $this->assertEqual(FILE_URL_TEST_CDN_2 . '/' . $filepath, $url, t('Correctly generated a CDN URL for a shipped file.'));

    // Test alteration of file URLs to use root-relative URLs.
    variable_set('file_test_hook_file_url_alter', 'root-relative');
    $filepath = 'misc/jquery.js';
    $url = file_create_url($filepath);
    $this->assertEqual(base_path() . '/' . $filepath, $url, t('Correctly generated a root-relative URL for a shipped file.'));
    $filepath = 'misc/favicon.ico';
    $url = file_create_url($filepath);
    $this->assertEqual(base_path() . '/' . $filepath, $url, t('Correctly generated a root-relative URL for a shipped file.'));

    // Test alteration of file URLs to use protocol-relative URLs.
    variable_set('file_test_hook_file_url_alter', 'protocol-relative');
    $filepath = 'misc/jquery.js';
    $url = file_create_url($filepath);
    $this->assertEqual('/' . base_path() . '/' . $filepath, $url, t('Correctly generated a protocol-relative URL for a shipped file.'));
    $filepath = 'misc/favicon.ico';
    $url = file_create_url($filepath);
    $this->assertEqual('/' . base_path() . '/' . $filepath, $url, t('Correctly generated a protocol-relative URL for a shipped file.'));
  }

  /**
   * Test the generating of rewritten public created file URLs.
   */
  function testPublicCreatedFileURL() {
    // Test generating an URL to a created file.

    // Test alteration of file URLs to use a CDN.
    variable_set('file_test_hook_file_url_alter', 'cdn');
    $file = $this->createFile();
    $url = file_create_url($file->uri);
    $public_directory_path = file_stream_wrapper_get_instance_by_scheme('public')->getDirectoryPath();
    $this->assertEqual(FILE_URL_TEST_CDN_2 . '/' . $public_directory_path . '/' . $file->filename, $url, t('Correctly generated a CDN URL for a created file.'));

    // Test alteration of file URLs to use root-relative URLs.
    variable_set('file_test_hook_file_url_alter', 'root-relative');
    $file = $this->createFile();
    $url = file_create_url($file->uri);
    $this->assertEqual(base_path() . '/' . $public_directory_path . '/' . $file->filename, $url, t('Correctly generated a root-relative URL for a created file.'));

    // Test alteration of file URLs to use a protocol-relative URLs.
    variable_set('file_test_hook_file_url_alter', 'protocol-relative');
    $file = $this->createFile();
    $url = file_create_url($file->uri);
    $this->assertEqual('/' . base_path() . '/' . $public_directory_path . '/' . $file->filename, $url, t('Correctly generated a protocol-relative URL for a created file.'));
  }
}

/**
 * Tests for file_munge_filename() and file_unmunge_filename().
 */
class FileNameMungingTest extends FileTestCase {
  public static function getInfo() {
    return array(
      'name' => 'File naming',
      'description' => 'Test filename munging and unmunging.',
      'group' => 'File API',
    );
  }

  function setUp() {
    parent::setUp();
    $this->bad_extension = 'php';
    $this->name = $this->randomName() . '.' . $this->bad_extension . '.txt';
  }

  /**
   * Create a file and munge/unmunge the name.
   */
  function testMunging() {
    // Disable insecure uploads.
    variable_set('allow_insecure_uploads', 0);
    $munged_name = file_munge_filename($this->name, '', TRUE);
    $messages = drupal_get_messages();
    $this->assertTrue(in_array(t('For security reasons, your upload has been renamed to %filename.', array('%filename' => $munged_name)), $messages['status']), t('Alert properly set when a file is renamed.'));
    $this->assertNotEqual($munged_name, $this->name, t('The new filename (%munged) has been modified from the original (%original)', array('%munged' => $munged_name, '%original' => $this->name)));
  }

  /**
   * If the allow_insecure_uploads variable evaluates to true, the file should
   * come out untouched, no matter how evil the filename.
   */
  function testMungeIgnoreInsecure() {
    variable_set('allow_insecure_uploads', 1);
    $munged_name = file_munge_filename($this->name, '');
    $this->assertIdentical($munged_name, $this->name, t('The original filename (%original) matches the munged filename (%munged) when insecure uploads are enabled.', array('%munged' => $munged_name, '%original' => $this->name)));
  }

  /**
   * White listed extensions are ignored by file_munge_filename().
   */
  function testMungeIgnoreWhitelisted() {
    // Declare our extension as whitelisted.
    $munged_name = file_munge_filename($this->name, $this->bad_extension);
    $this->assertIdentical($munged_name, $this->name, t('The new filename (%munged) matches the original (%original) once the extension has been whitelisted.', array('%munged' => $munged_name, '%original' => $this->name)));
  }

  /**
   * Ensure that unmunge gets your name back.
   */
  function testUnMunge() {
    $munged_name = file_munge_filename($this->name, '', FALSE);
    $unmunged_name = file_unmunge_filename($munged_name);
    $this->assertIdentical($unmunged_name, $this->name, t('The unmunged (%unmunged) filename matches the original (%original)', array('%unmunged' => $unmunged_name, '%original' => $this->name)));
  }
}

/**
 * Tests for file_get_mimetype().
 */
class FileMimeTypeTest extends DrupalWebTestCase {
  function setUp() {
    parent::setUp('file_test');
  }

  public static function getInfo() {
    return array(
      'name' => 'File mimetypes',
      'description' => 'Test filename mimetype detection.',
      'group' => 'File API',
    );
  }

  /**
   * Test mapping of mimetypes from filenames.
   */
  public function testFileMimeTypeDetection() {
    $prefix = 'simpletest://';

    $test_case = array(
      'test.jar' => 'application/java-archive',
      'test.jpeg' => 'image/jpeg',
      'test.JPEG' => 'image/jpeg',
      'test.jpg' => 'image/jpeg',
      'test.jar.jpg' => 'image/jpeg',
      'test.jpg.jar' => 'application/java-archive',
      'test.pcf.Z' => 'application/x-font',
      'pcf.z' => 'application/octet-stream',
      'jar' => 'application/octet-stream',
      'some.junk' => 'application/octet-stream',
      'foo.file_test_1' => 'madeup/file_test_1',
      'foo.file_test_2' => 'madeup/file_test_2',
      'foo.doc' => 'madeup/doc',
    );

    // Test using default mappings.
    foreach ($test_case as $input => $expected) {
      // Test stream [URI].
      $output = file_get_mimetype($prefix . $input);
      $this->assertIdentical($output, $expected, t('Mimetype for %input is %output (expected: %expected).', array('%input' => $input, '%output' => $output, '%expected' => $expected)));

      // Test normal path equivalent
      $output = file_get_mimetype($input);
      $this->assertIdentical($output, $expected, t('Mimetype (using default mappings) for %input is %output (expected: %expected).', array('%input' => $input, '%output' => $output, '%expected' => $expected)));
    }

    // Now test passing in the map.
    $mapping = array(
      'mimetypes' => array(
        0 => 'application/java-archive',
        1 => 'image/jpeg',
      ),
      'extensions' => array(
         'jar' => 0,
         'jpg' => 1,
      )
    );

    $test_case = array(
      'test.jar' => 'application/java-archive',
      'test.jpeg' => 'application/octet-stream',
      'test.jpg' => 'image/jpeg',
      'test.jar.jpg' => 'image/jpeg',
      'test.jpg.jar' => 'application/java-archive',
      'test.pcf.z' => 'application/octet-stream',
      'pcf.z' => 'application/octet-stream',
      'jar' => 'application/octet-stream',
      'some.junk' => 'application/octet-stream',
      'foo.file_test_1' => 'application/octet-stream',
      'foo.file_test_2' => 'application/octet-stream',
      'foo.doc' => 'application/octet-stream',
    );

    foreach ($test_case as $input => $expected) {
      $output = file_get_mimetype($input, $mapping);
      $this->assertIdentical($output, $expected, t('Mimetype (using passed-in mappings) for %input is %output (expected: %expected).', array('%input' => $input, '%output' => $output, '%expected' => $expected)));
    }
  }
}

/**
 * Tests stream wrapper functions.
 */
class StreamWrapperTest extends DrupalWebTestCase {

  protected $scheme = 'dummy';
  protected $classname = 'DrupalDummyStreamWrapper';

  public static function getInfo() {
    return array(
      'name' => 'Stream wrappers',
      'description' => 'Tests stream wrapper functions.',
      'group' => 'File API',
    );
  }

  function setUp() {
    parent::setUp('file_test');
    drupal_static_reset('file_get_stream_wrappers');
  }

  function tearDown() {
    parent::tearDown();
    stream_wrapper_unregister($this->scheme);
  }

  /**
   * Test the getClassName() function.
   */
  function testGetClassName() {
    // Check the dummy scheme.
    $this->assertEqual($this->classname, file_stream_wrapper_get_class($this->scheme), t('Got correct class name for dummy scheme.'));
    // Check core's scheme.
    $this->assertEqual('DrupalPublicStreamWrapper', file_stream_wrapper_get_class('public'), t('Got correct class name for public scheme.'));
  }

  /**
   * Test the file_stream_wrapper_get_instance_by_scheme() function.
   */
  function testGetInstanceByScheme() {
    $instance = file_stream_wrapper_get_instance_by_scheme($this->scheme);
    $this->assertEqual($this->classname, get_class($instance), t('Got correct class type for dummy scheme.'));

    $instance = file_stream_wrapper_get_instance_by_scheme('public');
    $this->assertEqual('DrupalPublicStreamWrapper', get_class($instance), t('Got correct class type for public scheme.'));
  }

  /**
   * Test the URI and target functions.
   */
  function testUriFunctions() {
    $instance = file_stream_wrapper_get_instance_by_uri($this->scheme . '://foo');
    $this->assertEqual($this->classname, get_class($instance), t('Got correct class type for dummy URI.'));

    $instance = file_stream_wrapper_get_instance_by_uri('public://foo');
    $this->assertEqual('DrupalPublicStreamWrapper', get_class($instance), t('Got correct class type for public URI.'));

    // Test file_uri_target().
    $this->assertEqual(file_uri_target('public://foo/bar.txt'), 'foo/bar.txt', t('Got a valid stream target from public://foo/bar.txt.'));
    $this->assertFalse(file_uri_target('foo/bar.txt'), t('foo/bar.txt is not a valid stream.'));

    // Test file_build_uri() and DrupalLocalStreamWrapper::getDirectoryPath().
    $this->assertEqual(file_build_uri('foo/bar.txt'), 'public://foo/bar.txt', t('Expected scheme was added.'));
    $this->assertEqual(file_stream_wrapper_get_instance_by_scheme('public')->getDirectoryPath(), variable_get('file_public_path'), t('Expected default directory path was returned.'));
    $this->assertEqual(file_stream_wrapper_get_instance_by_scheme('temporary')->getDirectoryPath(), variable_get('file_temporary_path'), t('Expected temporary directory path was returned.'));

    variable_set('file_default_scheme', 'private');
    $this->assertEqual(file_build_uri('foo/bar.txt'), 'private://foo/bar.txt', t('Got a valid URI from foo/bar.txt.'));
  }

  /**
   * Test the scheme functions.
   */
  function testGetValidStreamScheme() {
    $this->assertEqual('foo', file_uri_scheme('foo://pork//chops'), t('Got the correct scheme from foo://asdf'));
    $this->assertTrue(file_stream_wrapper_valid_scheme(file_uri_scheme('public://asdf')), t('Got a valid stream scheme from public://asdf'));
    $this->assertFalse(file_stream_wrapper_valid_scheme(file_uri_scheme('foo://asdf')), t('Did not get a valid stream scheme from foo://asdf'));
  }
}