<?php
// $Id: image.test,v 1.20 2010/04/22 21:43:59 webchick Exp $

/**
 * @file
 * Image module tests.
 */


/**
 * TODO: Test the following functions.
 *
 * image.effects.inc:
 *   image_style_generate()
 *   image_style_create_derivative()
 *
 * image.module:
 *   image_style_load()
 *   image_style_save()
 *   image_style_delete()
 *   image_style_options()
 *   image_style_flush()
 *   image_effect_definition_load()
 *   image_effect_load()
 *   image_effect_save()
 *   image_effect_delete()
 *   image_filter_keyword()
 */

/**
 * This class provides methods specifically for testing Image's field handling.
 */
class ImageFieldTestCase extends DrupalWebTestCase {
  protected $admin_user;

  function setUp() {
    parent::setUp('image');
    $this->admin_user = $this->drupalCreateUser(array('access content', 'access administration pages', 'administer site configuration', 'administer content types', 'administer nodes', 'create article content', 'edit any article content', 'delete any article content', 'administer image styles'));
    $this->drupalLogin($this->admin_user);
  }

  /**
   * Create a new image field.
   *
   * @param $name
   *   The name of the new field (all lowercase), exclude the "field_" prefix.
   * @param $type_name
   *   The node type that this field will be added to.
   * @param $field_settings
   *   A list of field settings that will be added to the defaults.
   * @param $instance_settings
   *   A list of instance settings that will be added to the instance defaults.
   * @param $widget_settings
   *   A list of widget settings that will be added to the widget defaults.
   */
  function createImageField($name, $type_name, $field_settings = array(), $instance_settings = array(), $widget_settings = array()) {
    $field = array(
      'field_name' => $name,
      'type' => 'image',
      'settings' => array(),
      'cardinality' => !empty($field_settings['cardinality']) ? $field_settings['cardinality'] : 1,
    );
    $field['settings'] = array_merge($field['settings'], $field_settings);
    field_create_field($field);

    $instance = array(
      'field_name' => $field['field_name'],
      'entity_type' => 'node',
      'label' => $name,
      'bundle' => $type_name,
      'required' => !empty($instance_settings['required']),
      'settings' => array(),
      'widget' => array(
        'type' => 'image_image',
        'settings' => array(),
      ),
    );
    $instance['settings'] = array_merge($instance['settings'], $instance_settings);
    $instance['widget']['settings'] = array_merge($instance['widget']['settings'], $widget_settings);
    return field_create_instance($instance);
  }

  /**
   * Upload an image to a node.
   *
   * @param $image
   *   A file object representing the image to upload.
   * @param $field_name
   *   Name of the image field the image should be attached to.
   * @param $type
   *   The type of node to create.
   */
  function uploadNodeImage($image, $field_name, $type) {
    $edit = array(
      'title' => $this->randomName(),
    );
    $edit['files[' . $field_name . '_' . LANGUAGE_NONE . '_0]'] = realpath($image->uri);
    $this->drupalPost('node/add/' . $type, $edit, t('Save'));

    // Retrieve ID of the newly created node from the current URL.
    $matches = array();
    preg_match('/node\/([0-9]+)/', $this->getUrl(), $matches);
    return isset($matches[1]) ? $matches[1] : FALSE;
  }
}

/**
 * Tests the functions for generating paths and URLs for image styles.
 */
class ImageStylesPathAndUrlUnitTest extends DrupalWebTestCase {
  protected $style_name;
  protected $image_info;
  protected $image_filepath;

  public static function getInfo() {
    return array(
      'name' => 'Image styles path and URL functions',
      'description' => 'Tests functions for generating paths and URLs to image styles.',
      'group' => 'Image',
    );
  }

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

    $this->style_name = 'style_foo';
    image_style_save(array('name' => $this->style_name));
  }

  /**
   * Test image_style_path().
   */
  function testImageStylePath() {
    $actual = image_style_path($this->style_name, 'public://foo/bar.gif');
    $expected = 'public://styles/' . $this->style_name . '/foo/bar.gif';
    $this->assertEqual($actual, $expected, t('Got the path for a file URI.'));

    $actual = image_style_path($this->style_name, 'foo/bar.gif');
    $expected = 'public://styles/' . $this->style_name . '/foo/bar.gif';
    $this->assertEqual($actual, $expected, t('Got the path for a relative file path.'));
  }

  /**
   * Test image_style_url() with a file using the "public://" scheme.
   */
  function testImageStyleUrlAndPathPublic() {
    $this->_testImageStyleUrlAndPath('public');
  }

  /**
   * Test image_style_url() with a file using the "private://" scheme.
   */
  function testImageStyleUrlAndPathPrivate() {
    $this->_testImageStyleUrlAndPath('private');
  }

  /**
   * Test image_style_url().
   */
  function _testImageStyleUrlAndPath($scheme) {
    // Make the default scheme neither "public" nor "private" to verify the
    // functions work for other than the default scheme.
    variable_set('file_default_scheme', 'temporary');
    $d = 'temporary://';
    file_prepare_directory($d, FILE_CREATE_DIRECTORY);

    // Create the directories for the styles.
    $d = $scheme . '://styles/' . $this->style_name;
    $status = file_prepare_directory($d, FILE_CREATE_DIRECTORY);
    $this->assertNotIdentical(FALSE, $status, t('Created the directory for the generated images for the test style.' ));

    // Create a working copy of the file.
    $files = $this->drupalGetTestFiles('image');
    $file = reset($files);
    $image_info = image_get_info($file->uri);
    $original_uri = file_unmanaged_copy($file->uri, $scheme . '://', FILE_EXISTS_RENAME);
    $this->assertNotIdentical(FALSE, $original_uri, t('Created the generated image file.'));

    // Get the URL of a file that has not been generated yet and try to access
    // it before image_style_url has been called.
    $generated_uri = $scheme . '://styles/' . $this->style_name . '/' . basename($original_uri);
    $this->assertFalse(file_exists($generated_uri), t('Generated file does not exist.'));
    $expected_generate_url = url('image/generate/' . $this->style_name . '/' . $scheme . '/' . basename($original_uri), array('absolute' => TRUE));
    $this->drupalGet($expected_generate_url);
    $this->assertResponse(403, t('Access to generate URL was denied.'));

    // Check that a generate URL is returned.
    $actual_generate_url = image_style_url($this->style_name, $original_uri);
    $this->assertEqual($actual_generate_url, $expected_generate_url, t('Got the generate URL for a non-existent file.'));

    // Fetch the URL that generates the file while another process appears to
    // be generating the same file (this is signaled using a lock).
    $lock_name = 'image_style_generate:' . $this->style_name . ':' . md5($original_uri);
    $this->assertTrue(lock_acquire($lock_name), t('Lock was acquired.'));
    $this->drupalGet($expected_generate_url);
    $this->assertResponse(503, t('Service Unavailable response received.'));
    $this->assertTrue($this->drupalGetHeader('Retry-After'), t('Retry-After header received.'));
    lock_release($lock_name);

    // Fetch the URL that generates the file.
    $this->drupalGet($expected_generate_url);
    $this->assertTrue(file_exists($generated_uri), t('Generated file was created.'));
    $this->assertRaw(file_get_contents($generated_uri), t('URL returns expected file.'));
    $generated_image_info = image_get_info($generated_uri);
    $this->assertEqual($this->drupalGetHeader('Content-Type'), $generated_image_info['mime_type'], t('Expected Content-Type was reported.'));
    $this->assertEqual($this->drupalGetHeader('Content-Length'), $generated_image_info['file_size'], t('Expected Content-Length was reported.'));
    $this->assertTrue(lock_may_be_available($lock_name), t('Lock was released.'));

    // Check that the URL points directly to the generated file.
    $expected_generated_url = file_create_url($generated_uri);
    $actual_generated_url = image_style_url($this->style_name, $original_uri);
    $this->drupalGet($expected_generated_url);
    $this->assertEqual($actual_generated_url, $expected_generated_url, t('Got the download URL for an existing file.'));
    $this->assertRaw(file_get_contents($generated_uri), t('URL returns expected file.'));
    $this->assertEqual($this->drupalGetHeader('Content-Type'), $image_info['mime_type'], t('Expected Content-Type was reported.'));
    $this->assertEqual($this->drupalGetHeader('Content-Length'), $image_info['file_size'], t('Expected Content-Length was reported.'));
  }
}

/**
 * Use the image_test.module's mock toolkit to ensure that the effects are
 * properly passing parameters to the image toolkit.
 */
class ImageEffectsUnitTest extends ImageToolkitTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Image effects',
      'description' => 'Test that the image effects pass parameters to the toolkit correctly.',
      'group' => 'Image',
    );
  }

  function setUp() {
    parent::setUp('image_test');
    module_load_include('inc', 'image', 'image.effects');
  }

  /**
   * Test the image_resize_effect() function.
   */
  function testResizeEffect() {
    $this->assertTrue(image_resize_effect($this->image, array('width' => 1, 'height' => 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_effect() function.
   */
  function testScaleEffect() {
    // @todo: need to test upscaling.
    $this->assertTrue(image_scale_effect($this->image, array('width' => 10, 'height' => 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_crop_effect() function.
   */
  function testCropEffect() {
    // @todo should test the keyword offsets.
    $this->assertTrue(image_crop_effect($this->image, array('anchor' => 'top-1', 'width' => 3, 'height' => 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], 0, t('X was passed correctly'));
    $this->assertEqual($calls['crop'][0][2], 1, 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_scale_and_crop_effect() function.
   */
  function testScaleAndCropEffect() {
    $this->assertTrue(image_scale_and_crop_effect($this->image, array('width' => 5, 'height' => 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_desaturate_effect() function.
   */
  function testDesaturateEffect() {
    $this->assertTrue(image_desaturate_effect($this->image, array()), 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 image_rotate_effect() function.
   */
  function testRotateEffect() {
    // @todo: need to test with 'random' => TRUE
    $this->assertTrue(image_rotate_effect($this->image, array('degrees' => 90, 'bgcolor' => '#fff')), t('Function returned the expected value.'));
    $this->assertToolkitOperationsCalled(array('rotate'));

    // Check the parameters.
    $calls = image_test_get_all_calls();
    $this->assertEqual($calls['rotate'][0][1], 90, t('Degrees were passed correctly'));
    $this->assertEqual($calls['rotate'][0][2], 0xffffff, t('Background color was passed correctly'));
  }
}

/**
 * Tests creation, deletion, and editing of image styles and effects.
 */
class ImageAdminStylesUnitTest extends ImageFieldTestCase {

  public static function getInfo() {
    return array(
      'name' => 'Image styles and effects UI configuration',
      'description' => 'Tests creation, deletion, and editing of image styles and effects at the UI level.',
      'group' => 'Image',
    );
  }

  /**
   * Given an image style, generate an image.
   */
  function createSampleImage($style) {
    static $file_path;

    // First, we need to make sure we have an image in our testing
    // file directory. Copy over an image on the first run.
    if (!isset($file_path)) {
      $files = $this->drupalGetTestFiles('image');
      $file = reset($files);
      $file_path = file_unmanaged_copy($file->uri);
    }

    return image_style_url($style['name'], $file_path) ? $file_path : FALSE;
  }

  /**
   * Count the number of images currently create for a style.
   */
  function getImageCount($style) {
    $directory = file_directory_path() . '/styles/' . $style['name'];
    return count(file_scan_directory($directory, '/.*/'));
  }

  /**
   * General test to add a style, add/remove/edit effects to it, then delete it.
   */
  function testStyle() {
    // Setup a style to be created and effects to add to it.
    $style_name = strtolower($this->randomName(10));
    $style_path = 'admin/config/media/image-styles/edit/' . $style_name;
    $effect_edits = array(
      'image_resize' => array(
        'data[width]' => 100,
        'data[height]' => 101,
      ),
      'image_scale' => array(
        'data[width]' => 110,
        'data[height]' => 111,
        'data[upscale]' => 1,
      ),
      'image_scale_and_crop' => array(
        'data[width]' => 120,
        'data[height]' => 121,
      ),
      'image_crop' => array(
        'data[width]' => 130,
        'data[height]' => 131,
        'data[anchor]' => 'center-center',
      ),
      'image_desaturate' => array(
        // No options for desaturate.
      ),
      'image_rotate' => array(
        'data[degrees]' => 5,
        'data[random]' => 1,
        'data[bgcolor]' => '#FFFF00',
      ),
    );

    // Add style form.

    $edit = array(
      'name' => $style_name,
    );
    $this->drupalPost('admin/config/media/image-styles/add', $edit, t('Create new style'));
    $this->assertRaw(t('Style %name was created.', array('%name' => $style_name)), t('Image style successfully created.'));

    // Add effect form.

    // Add each sample effect to the style.
    foreach ($effect_edits as $effect => $edit) {
      // Add the effect.
      $this->drupalPost($style_path, array('new' => $effect), t('Add'));
      if (!empty($edit)) {
        $this->drupalPost(NULL, $edit, t('Add effect'));
      }
    }

    // Edit effect form.

    // Revisit each form to make sure the effect was saved.
    drupal_static_reset('image_styles');
    $style = image_style_load($style_name);

    foreach ($style['effects'] as $ieid => $effect) {
      $this->drupalGet($style_path . '/effects/' . $ieid);
      foreach ($effect_edits[$effect['name']] as $field => $value) {
        $this->assertFieldByName($field, $value, t('The %field field in the %effect effect has the correct value of %value.', array('%field' => $field, '%effect' => $effect['name'], '%value' => $value)));
      }
    }

    // Image style overview form (ordering and renaming).

    // Confirm the order of effects is maintained according to the order we
    // added the fields.
    $effect_edits_order = array_keys($effect_edits);
    $effects_order = array_values($style['effects']);
    $order_correct = TRUE;
    foreach ($effects_order as $index => $effect) {
      if ($effect_edits_order[$index] != $effect['name']) {
        $order_correct = FALSE;
      }
    }
    $this->assertTrue($order_correct, t('The order of the effects is correctly set by default.'));

    // Test the style overview form.
    // Change the name of the style and adjust the weights of effects.
    $style_name = strtolower($this->randomName(10));
    $weight = count($effect_edits);
    $edit = array(
      'name' => $style_name,
    );
    foreach ($style['effects'] as $ieid => $effect) {
      $edit['effects[' . $ieid . '][weight]'] = $weight;
      $weight--;
    }

    // Create an image to make sure it gets flushed after saving.
    $image_path = $this->createSampleImage($style);
    $this->assertEqual($this->getImageCount($style), 1, t('Image style %style image %file successfully generated.', array('%style' => $style['name'], '%file' => $image_path)));

    $this->drupalPost($style_path, $edit, t('Update style'));

    // Note that after changing the style name, the style path is changed.
    $style_path = 'admin/config/media/image-styles/edit/' . $style_name;

    // Check that the URL was updated.
    $this->drupalGet($style_path);
    $this->assertResponse(200, t('Image style %original renamed to %new', array('%original' => $style['name'], '%new' => $style_name)));

    // Check that the image was flushed after updating the style.
    // This is especially important when renaming the style. Make sure that
    // the old image directory has been deleted.
    $this->assertEqual($this->getImageCount($style), 0, t('Image style %style was flushed after renaming the style and updating the order of effects.', array('%style' => $style['name'])));

    // Load the style by the new name with the new weights.
    drupal_static_reset('image_styles');
    $style = image_style_load($style_name, NULL);

    // Confirm the new style order was saved.
    $effect_edits_order = array_reverse($effect_edits_order);
    $effects_order = array_values($style['effects']);
    $order_correct = TRUE;
    foreach ($effects_order as $index => $effect) {
      if ($effect_edits_order[$index] != $effect['name']) {
        $order_correct = FALSE;
      }
    }
    $this->assertTrue($order_correct, t('The order of the effects is correctly set by default.'));

    // Image effect deletion form.

    // Create an image to make sure it gets flushed after deleting an effect.
    $image_path = $this->createSampleImage($style);
    $this->assertEqual($this->getImageCount($style), 1, t('Image style %style image %file successfully generated.', array('%style' => $style['name'], '%file' => $image_path)));

    // Test effect deletion form.
    $effect = array_pop($style['effects']);
    $this->drupalPost($style_path . '/effects/' . $effect['ieid'] . '/delete', array(), t('Delete'));
    $this->assertRaw(t('The image effect %name has been deleted.', array('%name' => $effect['label'])), t('Image effect deleted.'));

    // Style deletion form.

    // Delete the style.
    $this->drupalPost('admin/config/media/image-styles/delete/' . $style_name, array(), t('Delete'));

    // Confirm the style directory has been removed.
    $directory = file_directory_path() . '/styles/' . $style_name;
    $this->assertFalse(is_dir($directory), t('Image style %style directory removed on style deletion.', array('%style' => $style['name'])));

    drupal_static_reset('image_styles');
    $this->assertFalse(image_style_load($style_name), t('Image style %style successfully deleted.', array('%style' => $style['name'])));

  }

  /**
   * Test to override, edit, then revert a style.
   */
  function testDefaultStyle() {
    // Setup a style to be created and effects to add to it.
    $style_name = 'thumbnail';
    $edit_path = 'admin/config/media/image-styles/edit/' . $style_name;
    $delete_path = 'admin/config/media/image-styles/delete/' . $style_name;
    $revert_path = 'admin/config/media/image-styles/revert/' . $style_name;

    // Ensure deleting a default is not possible.
    $this->drupalGet($delete_path);
    $this->assertText(t('Page not found'), t('Default styles may not be deleted.'));

    // Ensure that editing a default is not possible (without overriding).
    $this->drupalGet($edit_path);
    $this->assertNoField('edit-name', t('Default styles may not be renamed.'));
    $this->assertNoField('edit-submit', t('Default styles may not be edited.'));
    $this->assertNoField('edit-add', t('Default styles may not have new effects added.'));

    // Create an image to make sure the default works before overriding.
    drupal_static_reset('image_styles');
    $style = image_style_load($style_name);
    $image_path = $this->createSampleImage($style);
    $this->assertEqual($this->getImageCount($style), 1, t('Image style %style image %file successfully generated.', array('%style' => $style['name'], '%file' => $image_path)));

    // Verify that effects attached to a default style do not have an ieid key.
    foreach ($style['effects'] as $effect) {
      $this->assertFalse(isset($effect['ieid']), t('The %effect effect does not have an ieid.', array('%effect' => $effect['name'])));
    }

    // Override the default.
    $this->drupalPost($edit_path, array(), t('Override defaults'));
    $this->assertRaw(t('The %style style has been overridden, allowing you to change its settings.', array('%style' => $style_name)), t('Default image style may be overridden.'));

    // Add sample effect to the overridden style.
    $this->drupalPost($edit_path, array('new' => 'image_desaturate'), t('Add'));
    drupal_static_reset('image_styles');
    $style = image_style_load($style_name);

    // Verify that effects attached to the style have an ieid now.
    foreach ($style['effects'] as $effect) {
      $this->assertTrue(isset($effect['ieid']), t('The %effect effect has an ieid.', array('%effect' => $effect['name'])));
    }

    // The style should now have 2 effect, the original scale provided by core
    // and the desaturate effect we added in the override.
    $effects = array_values($style['effects']);
    $this->assertEqual($effects[0]['name'], 'image_scale', t('The default effect still exists in the overridden style.'));
    $this->assertEqual($effects[1]['name'], 'image_desaturate', t('The added effect exists in the overridden style.'));

    // Check that we are unable to rename an overridden style.
    $this->drupalGet($edit_path);
    $this->assertNoField('edit-name', t('Overridden styles may not be renamed.'));

    // Create an image to ensure the override works properly.
    $image_path = $this->createSampleImage($style);
    $this->assertEqual($this->getImageCount($style), 1, t('Image style %style image %file successfully generated.', array('%style' => $style['name'], '%file' => $image_path)));

    // Revert the image style.
    $this->drupalPost($revert_path, array(), t('Revert'));
    drupal_static_reset('image_styles');
    $style = image_style_load($style_name);

    // The style should now have the single effect for scale.
    $effects = array_values($style['effects']);
    $this->assertEqual($effects[0]['name'], 'image_scale', t('The default effect still exists in the reverted style.'));
    $this->assertFalse(array_key_exists(1, $effects), t('The added effect has been removed in the reverted style.'));
  }

  /**
   * Test deleting a style and choosing a replacement style.
   */
  function testStyleReplacement() {
    // Create a new style.
    $style_name = strtolower($this->randomName(10));
    image_style_save(array('name' => $style_name));
    $style_path = 'admin/config/media/image-styles/edit/' . $style_name;

    // Create an image field that uses the new style.
    $field_name = strtolower($this->randomName(10));
    $instance = $this->createImageField($field_name, 'article');
    $instance['display']['full']['type'] = 'image__' . $style_name;
    field_update_instance($instance);

    // Create a new node with an image attached.
    $test_image = current($this->drupalGetTestFiles('image'));
    $nid = $this->uploadNodeImage($test_image, $field_name, 'article');
    $node = node_load($nid);

    // Test that image is displayed using newly created style.
    $this->drupalGet('node/' . $nid);
    $this->assertRaw(image_style_url($style_name, $node->{$field_name}[LANGUAGE_NONE][0]['uri']), t('Image displayed using style @style.', array('@style' => $style_name)));

    // Rename the style and make sure the image field is updated.
    $new_style_name = strtolower($this->randomName(10));
    $edit = array(
      'name' => $new_style_name,
    );
    $this->drupalPost('admin/config/media/image-styles/edit/' . $style_name, $edit, t('Update style'));
    $this->assertText(t('Changes to the style have been saved.'), t('Style %name was renamed to %new_name.', array('%name' => $style_name, '%new_name' => $new_style_name)));
    $this->drupalGet('node/' . $nid);
    $this->assertRaw(image_style_url($new_style_name, $node->{$field_name}[LANGUAGE_NONE][0]['uri']), t('Image displayed using style replacement style.'));

    // Delete the style and choose a replacement style.
    $edit = array(
      'replacement' => 'thumbnail',
    );
    $this->drupalPost('admin/config/media/image-styles/delete/' . $new_style_name, $edit, t('Delete'));
    $message = t('Style %name was deleted.', array('%name' => $new_style_name));
    $this->assertRaw($message, $message);

    $this->drupalGet('node/' . $nid);
    $this->assertRaw(image_style_url('thumbnail', $node->{$field_name}[LANGUAGE_NONE][0]['uri']), t('Image displayed using style replacement style.'));
  }
}

/**
 * Test class to check that formatters and display settings are working.
 */
class ImageFieldDisplayTestCase extends ImageFieldTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Image field display tests',
      'description' => 'Test the display of image fields.',
      'group' => 'Image',
    );
  }

  /**
   * Test image formatters on node display.
   */
  function testImageFieldFormatters() {
    $field_name = strtolower($this->randomName());
    $this->createImageField($field_name, 'article');

    // Create a new node with an image attached.
    $test_image = current($this->drupalGetTestFiles('image'));
    $nid = $this->uploadNodeImage($test_image, $field_name, 'article');
    $node = node_load($nid, NULL, TRUE);

    // Test that the default formatter is being used.
    $image_uri = $node->{$field_name}[LANGUAGE_NONE][0]['uri'];
    $image_info = array(
      'path' => $image_uri,
      'getsize' => TRUE,
    );
    $default_output = theme('image', $image_info);
    $this->assertRaw($default_output, t('Default formatter displaying correctly on full node view.'));

    // Test the image linked to file formatter.
    $instance = field_info_instance('node', $field_name, 'article');
    $instance['display']['full']['type'] = 'image_link_file';
    field_update_instance($instance);
    $default_output = l(theme('image', $image_info), file_create_url($image_uri), array('html' => TRUE));
    $this->drupalGet('node/' . $nid);
    $this->assertRaw($default_output, t('Image linked to file formatter displaying correctly on full node view.'));

    // Test the image linked to content formatter.
    $instance['display']['full']['type'] = 'image_link_content';
    field_update_instance($instance);
    $default_output = l(theme('image', $image_info), 'node/' . $nid, array('html' => TRUE, 'attributes' => array('class' => 'active')));
    $this->drupalGet('node/' . $nid);
    $this->assertRaw($default_output, t('Image linked to content formatter displaying correctly on full node view.'));

    // Test the image style 'thumbnail' formatter.
    $instance['display']['full']['type'] = 'image__thumbnail';
    field_update_instance($instance);
    // Ensure the derrivative image is generated so we do not have to deal with
    // image style callback paths.
    $this->drupalGet(image_style_url('thumbnail', $image_uri));
    $image_info['path'] = image_style_url('thumbnail', $image_uri);
    $image_info['getsize'] = FALSE;
    $default_output = theme('image', $image_info);
    $this->drupalGet('node/' . $nid);
    $this->assertRaw($default_output, t('Image style thumbnail formatter displaying correctly on full node view.'));
  }

  /**
   * Tests for image field settings.
   */
  function testImageFieldSettings() {
    $field_name = strtolower($this->randomName());
    $instance_settings = array(
      'alt_field' => 1,
      'file_extensions' => 'gif jpg jpeg',
      'max_filesize' => '50 KB',
      'max_resolution' => '100x100',
      'min_resolution' => '10x10',
      'title_field' => 1,
    );
    $widget_settings = array(
      'preview_image_style' => 'medium',
    );
    $this->createImageField($field_name, 'article', array(), $instance_settings, $widget_settings);
    $instance = field_info_instance('node', $field_name, 'article');

    $this->drupalGet('node/add/article');
    $this->assertText(t('Files must be less than 50 KB.'), t('Image widget max file size is displayed on article form.'));
    $this->assertText(t('Allowed file types: gif jpg jpeg.'), t('Image widget allowed file types displayed on article form.'));
    $this->assertText(t('Images must be between 10x10 and 100x100 pixels.'), t('Image widget allowed resolution displayed on article form.'));

    // We have to create the article first and then edit it because the alt
    // and title fields do not display until the image has been attached.
    $test_image = current($this->drupalGetTestFiles('image'));
    $nid = $this->uploadNodeImage($test_image, $field_name, 'article');
    $this->drupalGet('node/' . $nid . '/edit');
    $this->assertFieldByName($field_name . '[' . LANGUAGE_NONE . '][0][alt]', '', t('Alt field displayed on article form.'));
    $this->assertFieldByName($field_name . '[' . LANGUAGE_NONE . '][0][title]', '', t('Title field displayed on article form.'));
    // Verify that the attached image is being previewed using the 'medium'
    // style.
    $node = node_load($nid, NULL, TRUE);
    $image_info = array(
      'path' => image_style_url('medium', $node->{$field_name}[LANGUAGE_NONE][0]['uri']),
      'getsize' => FALSE,
    );
    $default_output = theme('image', $image_info);
    $this->assertRaw($default_output, t("Preview image is displayed using 'medium' style."));

    // Add alt/title fields to the image and verify that they are displayed.
    $image_info = array(
      'path' => $node->{$field_name}[LANGUAGE_NONE][0]['uri'],
      'alt' => $this->randomName(),
      'title' => $this->randomName(),
      'getsize' => TRUE,
    );
    $edit = array(
      $field_name . '[' . LANGUAGE_NONE . '][0][alt]' => $image_info['alt'],
      $field_name . '[' . LANGUAGE_NONE . '][0][title]' => $image_info['title'],
    );
    $this->drupalPost('node/' . $nid . '/edit', $edit, t('Save'));
    $default_output = theme('image', $image_info);
    $this->assertRaw($default_output, t('Image displayed using user supplied alt and title attributes.'));
  }

  /**
   * Test use of a default image with an image field.
   */
  function testImageFieldDefaultImage() {
    // Create a new image field.
    $field_name = strtolower($this->randomName());
    $this->createImageField($field_name, 'article');

    // Create a new node, with no images and verify that no images are
    // displayed.
    $node = $this->drupalCreateNode(array('type' => 'article'));
    $this->drupalGet('node/' . $node->nid);
    // Verify that no image is displayed on the page by checking for the class
    // that would be used on the image field.
    $this->assertNoPattern('<div class="(.*?)field-name-' . strtr($field_name, '_', '-') . '(.*?)">', t('No image displayed when no image is attached and no default image specified.'));

    // Add a default image to the imagefield instance.
    $images = $this->drupalGetTestFiles('image');
    $edit = array(
      'files[field_settings_default_image]' => realpath($images[0]->uri),
    );
    $this->drupalPost('admin/structure/types/manage/article/fields/' . $field_name, $edit, t('Save settings'));
    // Clear field info cache so the new default image is detected.
    field_info_cache_clear();
    $field = field_info_field($field_name);
    $image = file_load($field['settings']['default_image']);
    $default_output = theme('image', array('path' => $image->uri, 'getsize' => TRUE));
    $this->drupalGet('node/' . $node->nid);
    $this->assertRaw($default_output, t('Default image displayed when no user supplied image is present.'));

    // Create a node with an image attached and ensure that the default image
    // is not displayed.
    $nid = $this->uploadNodeImage($images[1], $field_name, 'article');
    $node = node_load($nid, NULL, TRUE);
    $image_info = array(
      'path' => $node->{$field_name}[LANGUAGE_NONE][0]['uri'],
      'getsize' => TRUE,
    );
    $image_output = theme('image', $image_info);
    $this->drupalGet('node/' . $nid);
    $this->assertNoRaw($default_output, t('Default image is not displayed when user supplied image is present.'));
    $this->assertRaw($image_output, t('User supplied image is displayed.'));

    // Remove default image from the field and make sure it is no longer used.
    $edit = array(
      'field[settings][default_image][fid]' => 0,
    );
    $this->drupalPost('admin/structure/types/manage/article/fields/' . $field_name, $edit, t('Save settings'));
    // Clear field info cache so the new default image is detected.
    field_info_cache_clear();
    $field = field_info_field($field_name);
    $this->assertFalse($field['settings']['default_image'], t('Default image removed from field.'));
  }
}

/**
 * Test class to check for various validations.
 */
class ImageFieldValidateTestCase extends ImageFieldTestCase {
  public static function getInfo() {
    return array(
      'name' => 'Image field validation tests',
      'description' => 'Tests validation functions such as min/max resolution.',
      'group' => 'Image',
    );
  }

  /**
   * Test min/max resolution settings.
   */
  function testResolution() {
    $field_name = strtolower($this->randomName());
    $instance_settings = array(
      'max_resolution' => '100x100',
      'min_resolution' => '50x50',
    );
    $this->createImageField($field_name, 'article', array(), $instance_settings);

    // Use image-test.png which has a resolution of 40x20.
    $test_image = current($this->drupalGetTestFiles('image', 48006));
    $nid = $this->uploadNodeImage($test_image, $field_name, 'article');
    $this->assertText(t('The specified file image-test.png could not be uploaded. The image is too small; the minimum dimensions are 50x50 pixels.'), t('Node save failed when minimum image resolution was not met.'));

    // Use image-1.png which has a resolution of 360x240.
    $test_image = current($this->drupalGetTestFiles('image', 64027));
    $nid = $this->uploadNodeImage($test_image, $field_name, 'article');
    $this->assertText(t('The image was resized to fit within the maximum allowed dimensions of 100x100 pixels.'), t('Image exceeding max resolution was properly resized.'));
  }
}
