1 files changed, 30 insertions, 0 deletions
diff --git a/modules/simpletest/tests/form.test b/modules/simpletest/tests/form.test
index 0f1769d43..78dff3d45 100644
--- a/modules/simpletest/tests/form.test
+++ b/modules/simpletest/tests/form.test
@@ -597,6 +597,36 @@ class FormsFormStorageTestCase extends DrupalWebTestCase {
     $this->assertFieldByName('title', 'title_changed', t('The altered form storage value was updated in cache and taken over.'));
     $this->assertText('Title: title_changed', t('The form storage has stored the values.'));
   }
+
+  /**
+   * Tests a form using form state without using 'storage' to pass data from the
+   * constructor to a submit handler. The data has to persist even when caching
+   * gets activated, what may happen when a modules alter the form and adds
+   * #ajax properties.
+   */
+  function testFormStatePersist() {
+    // Test the form one time with caching activated and one time without.
+    $run_options = array(
+      array(),
+      array('query' => array('cache' => 1)),
+    );
+    foreach($run_options as $options) {
+      $this->drupalPost('form-test/state-persist', array(), t('Submit'), $options);
+      // The submit handler outputs the value in $form_state, assert it's there.
+      $this->assertText('State persisted.');
+
+      // Test it again, but first trigger a validation error, then test.
+      $this->drupalPost('form-test/state-persist', array('title' => ''), t('Submit'), $options);
+      $this->assertText(t('!name field is required.', array('!name' => 'title')));
+      // Submit the form again triggering no validation error.
+      $this->drupalPost(NULL, array('title' => 'foo'), t('Submit'), $options);
+      $this->assertText('State persisted.');
+
+      // Now post to the rebuilt form and verify it's still there afterwards.
+      $this->drupalPost(NULL, array('title' => 'bar'), t('Submit'), $options);
+      $this->assertText('State persisted.');
+    }
+  }
 }
 
 /**