function JavaScriptTestCase::testRenderOrder in Drupal 7

Test JavaScript ordering.

File

modules/simpletest/tests/common.test, line 1766

Tests for common.inc functionality.

Class

JavaScriptTestCase

Tests for the JavaScript system.

Code

function testRenderOrder() {

  // Add a bunch of JavaScript in strange ordering.
  drupal_add_js('(function($){alert("Weight 5 #1");})(jQuery);', array(
    'type' => 'inline',
    'scope' => 'footer',
    'weight' => 5,
  ));
  drupal_add_js('(function($){alert("Weight 0 #1");})(jQuery);', array(
    'type' => 'inline',
    'scope' => 'footer',
  ));
  drupal_add_js('(function($){alert("Weight 0 #2");})(jQuery);', array(
    'type' => 'inline',
    'scope' => 'footer',
  ));
  drupal_add_js('(function($){alert("Weight -8 #1");})(jQuery);', array(
    'type' => 'inline',
    'scope' => 'footer',
    'weight' => -8,
  ));
  drupal_add_js('(function($){alert("Weight -8 #2");})(jQuery);', array(
    'type' => 'inline',
    'scope' => 'footer',
    'weight' => -8,
  ));
  drupal_add_js('(function($){alert("Weight -8 #3");})(jQuery);', array(
    'type' => 'inline',
    'scope' => 'footer',
    'weight' => -8,
  ));
  drupal_add_js('http://example.com/example.js?Weight -5 #1', array(
    'type' => 'external',
    'scope' => 'footer',
    'weight' => -5,
  ));
  drupal_add_js('(function($){alert("Weight -8 #4");})(jQuery);', array(
    'type' => 'inline',
    'scope' => 'footer',
    'weight' => -8,
  ));
  drupal_add_js('(function($){alert("Weight 5 #2");})(jQuery);', array(
    'type' => 'inline',
    'scope' => 'footer',
    'weight' => 5,
  ));
  drupal_add_js('(function($){alert("Weight 0 #3");})(jQuery);', array(
    'type' => 'inline',
    'scope' => 'footer',
  ));

  // Construct the expected result from the regex.
  $expected = array(
    "-8 #1",
    "-8 #2",
    "-8 #3",
    "-8 #4",
    "-5 #1",
    // The external script.
    "0 #1",
    "0 #2",
    "0 #3",
    "5 #1",
    "5 #2",
  );

  // Retrieve the rendered JavaScript and test against the regex.
  $js = drupal_get_js('footer');
  $matches = array();
  if (preg_match_all('/Weight\\s([-0-9]+\\s[#0-9]+)/', $js, $matches)) {
    $result = $matches[1];
  }
  else {
    $result = array();
  }
  $this
    ->assertIdentical($result, $expected, 'JavaScript is added in the expected weight order.');
}