function ModuleDependencyTestCase::testModuleEnableOrder

Tests that module dependencies are enabled in the correct order via the UI. Dependencies should be enabled before their dependents.

File

drupal/modules/system/system.test, line 513

Tests for system.module.

Class

ModuleDependencyTestCase

Test module dependency functionality.

Code

function testModuleEnableOrder() {
  module_enable(array(
    'module_test',
  ), FALSE);
  $this
    ->resetAll();
  $this
    ->assertModules(array(
    'module_test',
  ), TRUE);
  variable_set('dependency_test', 'dependency');

  // module_test creates a dependency chain: forum depends on poll, which
  // depends on php. The correct enable order is, php, poll, forum.
  $expected_order = array(
    'php',
    'poll',
    'forum',
  );

  // Enable the modules through the UI, verifying that the dependency chain
  // is correct.
  $edit = array();
  $edit['modules[Core][forum][enable]'] = 'forum';
  $this
    ->drupalPost('admin/modules', $edit, t('Save configuration'));
  $this
    ->assertModules(array(
    'forum',
  ), FALSE);
  $this
    ->assertText(t('You must enable the Poll, PHP filter modules to install Forum.'), t('Dependency chain created.'));
  $edit['modules[Core][poll][enable]'] = 'poll';
  $edit['modules[Core][php][enable]'] = 'php';
  $this
    ->drupalPost('admin/modules', $edit, t('Save configuration'));
  $this
    ->assertModules(array(
    'forum',
    'poll',
    'php',
  ), TRUE);

  // Check the actual order which is saved by module_test_modules_enabled().
  $this
    ->assertIdentical(variable_get('test_module_enable_order', FALSE), $expected_order, t('Modules enabled in the correct order.'));
}