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Diffstat (limited to 'modules/simpletest/tests/image.test')
| -rw-r--r-- | modules/simpletest/tests/image.test | 397 |
1 files changed, 397 insertions, 0 deletions
diff --git a/modules/simpletest/tests/image.test b/modules/simpletest/tests/image.test new file mode 100644 index 000000000..2348b28e1 --- /dev/null +++ b/modules/simpletest/tests/image.test @@ -0,0 +1,397 @@ +<?php +// $Id$ + +/** + * @file + * Unit tests for the Drupal Form API. + */ + +/** + * Base class for image manipulation testing. + */ +class ImageToolkitTestCase extends DrupalWebTestCase { + protected $toolkit; + protected $file; + protected $image; + + function getInfo() { + return array( + 'name' => t('Image toolkit tests'), + 'description' => t('Check image tookit functions.'), + 'group' => t('Image API'), + ); + } + + function setUp() { + parent::setUp('image_test'); + + // Use the image_test.module's test toolkit. + $this->toolkit = 'test'; + + // Pick a file for testing. + $this->file = $this->originalFileDirectory . '/simpletest/image-test.png'; + + // Setup a dummy image to work with, this replicate image_load() so we + // can avoid calling it. + $this->image = new stdClass(); + $this->image->source = $this->file; + $this->image->info = image_get_info($this->file); + $this->image->toolkit = $this->toolkit; + + // Clear out any hook calls. + image_test_reset(); + } + + /** + * Assert that all of the specified image toolkit operations were called + * exactly once once, other values result in failure. + * + * @param $expected + * Array with string containing with the operation name, e.g. 'load', + * 'save', 'crop', etc. + */ + function assertToolkitOperationsCalled(array $expected) { + // Determine which operations were called. + $actual = array_keys(array_filter(image_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 operations %expected to be called but %uncalled was not called.', array('%expected' => implode(', ', $expected), '%uncalled' => implode(', ', $uncalled)))); + } + else { + $this->assertTrue(TRUE, t('All the expected operations were called: %expected', array('%expected' => implode(', ', $expected)))); + } + + // Determine if there were any unexpected calls. + $unexpected = array_diff($actual, $expected); + if (count($unexpected)) { + $this->assertTrue(FALSE, t('Unexpected operations were called: %unexpected.', array('%unexpected' => implode(', ', $unexpected)))); + } + else { + $this->assertTrue(TRUE, t('No unexpected operations were called.')); + } + } + + /** + * Check that hook_image_toolkits() is called and only available toolkits are + * returned. + */ + function testGetAvailableToolkits() { + $toolkits = image_get_available_toolkits(); + $this->assertTrue(isset($toolkits['test']), t('The working toolkit was returned.')); + $this->assertFalse(isset($toolkits['broken']), t('The toolkit marked unavailable was not returned')); + $this->assertToolkitOperationsCalled(array()); + } + + /** + * Test the image_load() function. + */ + function testLoad() { + $image = image_load($this->file, $this->toolkit); + $this->assertTrue(is_object($image), t('Returned an object.')); + $this->assertEqual($this->toolkit, $image->toolkit, t('Image had toolkit set.')); + $this->assertToolkitOperationsCalled(array('load')); + } + + /** + * Test the image_save() function. + */ + function testSave() { + $this->assertFalse(image_save($this->image), t('Function returned the expected value.')); + $this->assertToolkitOperationsCalled(array('save')); + } + + /** + * Test the image_resize() function. + */ + function testResize() { + $this->assertTrue(image_resize($this->image, 1, 2), t('Function returned the expected value.')); + $this->assertToolkitOperationsCalled(array('resize')); + + // Check the parameters. + $calls = image_test_get_all_calls(); + $this->assertEqual($calls['resize'][0][1], 1, t('Width was passed correctly')); + $this->assertEqual($calls['resize'][0][2], 2, t('Height was passed correctly')); + } + + /** + * Test the image_scale() function. + */ + function testScale() { +// TODO: need to test upscaling + $this->assertTrue(image_scale($this->image, 10, 10), t('Function returned the expected value.')); + $this->assertToolkitOperationsCalled(array('resize')); + + // Check the parameters. + $calls = image_test_get_all_calls(); + $this->assertEqual($calls['resize'][0][1], 10, t('Width was passed correctly')); + $this->assertEqual($calls['resize'][0][2], 5, t('Height was based off aspect ratio and passed correctly')); + } + + /** + * Test the image_scale_and_crop() function. + */ + function testScaleAndCrop() { + $this->assertTrue(image_scale_and_crop($this->image, 5, 10), t('Function returned the expected value.')); + $this->assertToolkitOperationsCalled(array('resize', 'crop')); + + // Check the parameters. + $calls = image_test_get_all_calls(); + + $this->assertEqual($calls['crop'][0][1], 7.5, t('X was computed and passed correctly')); + $this->assertEqual($calls['crop'][0][2], 0, t('Y was computed and passed correctly')); + $this->assertEqual($calls['crop'][0][3], 5, t('Width was computed and passed correctly')); + $this->assertEqual($calls['crop'][0][4], 10, t('Height was computed and passed correctly')); + } + + /** + * Test the image_crop() function. + */ + function testCrop() { + $this->assertTrue(image_crop($this->image, 1, 2, 3, 4), t('Function returned the expected value.')); + $this->assertToolkitOperationsCalled(array('crop')); + + // Check the parameters. + $calls = image_test_get_all_calls(); + $this->assertEqual($calls['crop'][0][1], 1, t('X was passed correctly')); + $this->assertEqual($calls['crop'][0][2], 2, t('Y was passed correctly')); + $this->assertEqual($calls['crop'][0][3], 3, t('Width was passed correctly')); + $this->assertEqual($calls['crop'][0][4], 4, t('Height was passed correctly')); + } + + /** + * Test the image_desaturate() function. + */ + function testDesaturate() { + $this->assertTrue(image_desaturate($this->image), t('Function returned the expected value.')); + $this->assertToolkitOperationsCalled(array('desaturate')); + + // Check the parameters. + $calls = image_test_get_all_calls(); + $this->assertEqual(count($calls['desaturate'][0]), 1, t('Only the image was passed.')); + } +} + +/** + * Test the core GD image manipulation functions. + */ +class ImageToolkitGdTestCase extends DrupalWebTestCase { + // Colors that are used in testing. + protected $black = array(0, 0, 0, 0); + protected $red = array(255, 0, 0, 0); + protected $green = array(0, 255, 0, 0); + protected $blue = array(0, 0, 255, 0); + protected $yellow = array(255, 255, 0, 0); + protected $fuchsia = array(255, 0, 255, 0); // Used as background colors. + protected $transparent = array(0, 0, 0, 127); + protected $white = array(255, 255, 255, 0); + + protected $width = 40; + protected $height = 20; + + function getInfo() { + return array( + 'name' => t('Image GD manipulation tests'), + 'description' => t('Check that core image manipulations work properly: scale, resize, crop, scale and crop, and desaturate.'), + 'group' => t('Image API'), + ); + } + + /** + * Function to compare two colors by RGBa. + */ + function colorsAreEqual($color_a, $color_b) { + // Fully transparent pixels are equal, regardless of RGB. + if ($color_a[3] == 127 && $color_b[3] == 127) { + return TRUE; + } + + foreach ($color_a as $key => $value) { + if ($color_b[$key] != $value) { + return FALSE; + } + } + + return TRUE; + } + + /** + * Function for finding a pixel's RGBa values. + */ + function getPixelColor($image, $x, $y) { + $color_index = imagecolorat($image->resource, $x, $y); + + $transparent_index = imagecolortransparent($image->resource); + if ($color_index == $transparent_index) { + return array(0, 0, 0, 127); + } + + return array_values(imagecolorsforindex($image->resource, $color_index)); + } + + /** + * Since PHP can't visually check that our images have been manipulated + * properly, build a list of expected color values for each of the corners and + * the expected height and widths for the final images. + */ + function testManipulations() { + // If GD isn't available don't bother testing this. + if (!drupal_function_exists('image_gd_check_settings') || !image_gd_check_settings()) { + $this->pass(t('Image manipulations for the GD toolkit were skipped because the GD toolkit is not available.')); + return; + } + + // Typically the corner colors will be unchanged. These colors are in the + // order of top-left, top-right, bottom-right, bottom-left. + $default_corners = array($this->red, $this->green, $this->blue, $this->transparent); + + // A list of files that will be tested. + $files = array( + 'image-test.png', + 'image-test.gif', + 'image-test.jpg', + ); + + // Setup a list of tests to perform on each type. + $operations = array( + 'resize' => array( + 'function' => 'resize', + 'arguments' => array(20, 10), + 'width' => 20, + 'height' => 10, + 'corners' => $default_corners, + ), + 'scale_x' => array( + 'function' => 'scale', + 'arguments' => array(20, NULL), + 'width' => 20, + 'height' => 10, + 'corners' => $default_corners, + ), + 'scale_y' => array( + 'function' => 'scale', + 'arguments' => array(NULL, 10), + 'width' => 20, + 'height' => 10, + 'corners' => $default_corners, + ), + 'upscale_x' => array( + 'function' => 'scale', + 'arguments' => array(80, NULL, TRUE), + 'width' => 80, + 'height' => 40, + 'corners' => $default_corners, + ), + 'upscale_y' => array( + 'function' => 'scale', + 'arguments' => array(NULL, 40, TRUE), + 'width' => 80, + 'height' => 40, + 'corners' => $default_corners, + ), + 'crop' => array( + 'function' => 'crop', + 'arguments' => array(12, 4, 16, 12), + 'width' => 16, + 'height' => 12, + 'corners' => array_fill(0, 4, $this->white), + ), + 'scale_and_crop' => array( + 'function' => 'scale_and_crop', + 'arguments' => array(10, 8), + 'width' => 10, + 'height' => 8, + 'corners' => array_fill(0, 4, $this->black), + ), + 'desaturate' => array( + 'function' => 'desaturate', + 'arguments' => array(), + 'height' => 20, + 'width' => 40, + // Grayscale corners are a bit funky. Each of the corners are a shade of + // gray. The values of these were determined simply by looking at the + // final image to see what desaturated colors end up being. + 'corners' => array(array_fill(0, 3, 76) + array(3 => 0), array_fill(0, 3, 149) + array(3 => 0), array_fill(0, 3, 29) + array(3 => 0), array_fill(0, 3, 0) + array(3 => 127)), + ), + ); + + foreach ($files as $file) { + foreach ($operations as $op => $values) { + // Load up a fresh image. + $image = image_load($this->originalFileDirectory . '/simpletest/' . $file, 'gd'); + if (!$image) { + $this->fail(t('Could not load image %file.', array('%file' => $file))); + continue 2; + } + + // Transparent GIFs and the imagefilter function don't work together. + // There is a todo in image.gd.inc to correct this. + if ($image->info['extension'] == 'gif') { + if ($op == 'desaturate') { + $values['corners'][3] = $this->white; + } + } + + // Perform our operation. + $function = 'image_'. $values['function']; + $arguments = array(); + $arguments[] = &$image; + $arguments = array_merge($arguments, $values['arguments']); + call_user_func_array($function, $arguments); + + // To keep from flooding the test with assert values, make a general + // value for whether each group of values fail. + $correct_dimensions_real = TRUE; + $correct_dimensions_object = TRUE; + $correct_colors = TRUE; + + // Check the real dimensions of the image first. + if (imagesy($image->resource) != $values['height'] || imagesx($image->resource) != $values['width']) { + $correct_dimensions_real = FALSE; + } + + // Check that the image object has an accurate record of the dimensions. + if ($image->info['width'] != $values['width'] || $image->info['height'] != $values['height']) { + $correct_dimensions_object = FALSE; + } + // Now check each of the corners to ensure color correctness. + foreach ($values['corners'] as $key => $corner) { + // Get the location of the corner. + switch ($key) { + case 0: + $x = 0; + $y = 0; + break; + case 1: + $x = $values['width'] - 1; + $y = 0; + break; + case 2: + $x = $values['width'] - 1; + $y = $values['height'] - 1; + break; + case 3: + $x = 0; + $y = $values['height'] - 1; + break; + } + $color = $this->getPixelColor($image, $x, $y); + $correct_colors = $this->colorsAreEqual($color, $corner); + } + + $directory = file_directory_path() . '/imagetests'; + file_check_directory($directory, FILE_CREATE_DIRECTORY); + image_save($image, $directory . '/' . $op . '.' . $image->info['extension']); + + $this->assertTrue($correct_dimensions_real, t('Image %file after %action action has proper dimensions.', array('%file' => $file, '%action' => $op))); + $this->assertTrue($correct_dimensions_object, t('Image %file object after %action action is reporting the proper height and width values.', array('%file' => $file, '%action' => $op))); + // JPEG colors will always be messed up due to compression. + if ($image->info['extension'] != 'jpg') { + $this->assertTrue($correct_colors, t('Image %file object after %action action has the correct color placement.', array('%file' => $file, '%action' => $op))); + } + } + } + + } +} |