function ModuleDependencyTestCase::testModuleEnableOrder

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

File

modules/system/system.test, line 513

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.'));
}