function ElementsVerticalTabsTest::testJavaScriptOrdering
Ensures that vertical-tabs.js is included before collapse.js.
Otherwise, collapse.js adds "SHOW" or "HIDE" labels to the tabs.
File
- 
              core/modules/ system/ tests/ src/ Functional/ Form/ ElementsVerticalTabsTest.php, line 60 
Class
- ElementsVerticalTabsTest
- Tests the vertical_tabs form element for expected behavior.
Namespace
Drupal\Tests\system\Functional\FormCode
public function testJavaScriptOrdering() {
  $this->drupalGet('form_test/vertical-tabs');
  $content = $this->getSession()
    ->getPage()
    ->getContent();
  $position1 = strpos($content, 'core/misc/vertical-tabs.js');
  $position2 = strpos($content, 'core/misc/collapse.js');
  $this->assertNotFalse($position1);
  $this->assertNotFalse($position2);
  $this->assertGreaterThan($position1, $position2, 'vertical-tabs.js is included before collapse.js');
}Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.
