function AJAXFrameworkTestCase::testLazyLoad in Drupal 7

Test that new JavaScript and CSS files added during an AJAX request are returned.

File

modules/simpletest/tests/ajax.test, line 123

Class

AJAXFrameworkTestCase

Tests primary Ajax framework functions.

Code

function testLazyLoad() {
  $expected = array(
    'setting_name' => 'ajax_forms_test_lazy_load_form_submit',
    'setting_value' => 'executed',
    'css' => drupal_get_path('module', 'system') . '/system.admin.css',
    'js' => drupal_get_path('module', 'system') . '/system.js',
  );

  // @todo D8: Add a drupal_css_defaults() helper function.
  $expected_css_html = drupal_get_css(array(
    $expected['css'] => array(
      'type' => 'file',
      'group' => CSS_DEFAULT,
      'weight' => 0,
      'every_page' => FALSE,
      'media' => 'all',
      'preprocess' => TRUE,
      'data' => $expected['css'],
      'browsers' => array(
        'IE' => TRUE,
        '!IE' => TRUE,
      ),
    ),
  ), TRUE);
  $expected_js_html = drupal_get_js('header', array(
    $expected['js'] => drupal_js_defaults($expected['js']),
  ), TRUE);

  // Get the base page.
  $this
    ->drupalGet('ajax_forms_test_lazy_load_form');
  $original_settings = $this
    ->drupalGetSettings();
  $original_css = $original_settings['ajaxPageState']['css'];
  $original_js = $original_settings['ajaxPageState']['js'];

  // Verify that the base page doesn't have the settings and files that are to
  // be lazy loaded as part of the next requests.
  $this
    ->assertTrue(!isset($original_settings[$expected['setting_name']]), t('Page originally lacks the %setting, as expected.', array(
    '%setting' => $expected['setting_name'],
  )));
  $this
    ->assertTrue(!isset($original_settings[$expected['css']]), t('Page originally lacks the %css file, as expected.', array(
    '%css' => $expected['css'],
  )));
  $this
    ->assertTrue(!isset($original_settings[$expected['js']]), t('Page originally lacks the %js file, as expected.', array(
    '%js' => $expected['js'],
  )));

  // Submit the AJAX request without triggering files getting added.
  $commands = $this
    ->drupalPostAJAX(NULL, array(
    'add_files' => FALSE,
  ), array(
    'op' => t('Submit'),
  ));
  $new_settings = $this
    ->drupalGetSettings();

  // Verify the setting was not added when not expected.
  $this
    ->assertTrue(!isset($new_settings['setting_name']), t('Page still lacks the %setting, as expected.', array(
    '%setting' => $expected['setting_name'],
  )));

  // Verify a settings command does not add CSS or scripts to Drupal.settings
  // and no command inserts the corresponding tags on the page.
  $found_settings_command = FALSE;
  $found_markup_command = FALSE;
  foreach ($commands as $command) {
    if ($command['command'] == 'settings' && (array_key_exists('css', $command['settings']['ajaxPageState']) || array_key_exists('js', $command['settings']['ajaxPageState']))) {
      $found_settings_command = TRUE;
    }
    if (isset($command['data']) && ($command['data'] == $expected_js_html || $command['data'] == $expected_css_html)) {
      $found_markup_command = TRUE;
    }
  }
  $this
    ->assertFalse($found_settings_command, t('Page state still lacks the %css and %js files, as expected.', array(
    '%css' => $expected['css'],
    '%js' => $expected['js'],
  )));
  $this
    ->assertFalse($found_markup_command, t('Page still lacks the %css and %js files, as expected.', array(
    '%css' => $expected['css'],
    '%js' => $expected['js'],
  )));

  // Submit the AJAX request and trigger adding files.
  $commands = $this
    ->drupalPostAJAX(NULL, array(
    'add_files' => TRUE,
  ), array(
    'op' => t('Submit'),
  ));
  $new_settings = $this
    ->drupalGetSettings();
  $new_css = $new_settings['ajaxPageState']['css'];
  $new_js = $new_settings['ajaxPageState']['js'];

  // Verify the expected setting was added.
  $this
    ->assertIdentical($new_settings[$expected['setting_name']], $expected['setting_value'], t('Page now has the %setting.', array(
    '%setting' => $expected['setting_name'],
  )));

  // Verify the expected CSS file was added, both to Drupal.settings, and as
  // an AJAX command for inclusion into the HTML.
  $this
    ->assertEqual($new_css, $original_css + array(
    $expected['css'] => 1,
  ), t('Page state now has the %css file.', array(
    '%css' => $expected['css'],
  )));
  $this
    ->assertCommand($commands, array(
    'data' => $expected_css_html,
  ), t('Page now has the %css file.', array(
    '%css' => $expected['css'],
  )));

  // Verify the expected JS file was added, both to Drupal.settings, and as
  // an AJAX command for inclusion into the HTML. By testing for an exact HTML
  // string containing the SCRIPT tag, we also ensure that unexpected
  // JavaScript code, such as a jQuery.extend() that would potentially clobber
  // rather than properly merge settings, didn't accidentally get added.
  $this
    ->assertEqual($new_js, $original_js + array(
    $expected['js'] => 1,
  ), t('Page state now has the %js file.', array(
    '%js' => $expected['js'],
  )));
  $this
    ->assertCommand($commands, array(
    'data' => $expected_js_html,
  ), t('Page now has the %js file.', array(
    '%js' => $expected['js'],
  )));
}