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+<?php
+
+/**
+ * @file
+ * Tests for the module API.
+ */
+
+/**
+ * Unit tests for the module API.
+ */
+class ModuleUnitTest extends DrupalWebTestCase {
+ public static function getInfo() {
+ return array(
+ 'name' => 'Module API',
+ 'description' => 'Test low-level module functions.',
+ 'group' => 'Module',
+ );
+ }
+
+ /**
+ * The basic functionality of module_list().
+ */
+ function testModuleList() {
+ // Build a list of modules, sorted alphabetically.
+ $profile_info = install_profile_info('standard', 'en');
+ $module_list = $profile_info['dependencies'];
+
+ // Installation profile is a module that is expected to be loaded.
+ $module_list[] = 'standard';
+
+ sort($module_list);
+ // Compare this list to the one returned by module_list(). We expect them
+ // to match, since all default profile modules have a weight equal to 0
+ // (except for block.module, which has a lower weight but comes first in
+ // the alphabet anyway).
+ $this->assertModuleList($module_list, t('Standard profile'));
+
+ // Try to install a new module.
+ module_enable(array('contact'));
+ $module_list[] = 'contact';
+ sort($module_list);
+ $this->assertModuleList($module_list, t('After adding a module'));
+
+ // Try to mess with the module weights.
+ db_update('system')
+ ->fields(array('weight' => 20))
+ ->condition('name', 'contact')
+ ->condition('type', 'module')
+ ->execute();
+ // Reset the module list.
+ module_list(TRUE);
+ // Move contact to the end of the array.
+ unset($module_list[array_search('contact', $module_list)]);
+ $module_list[] = 'contact';
+ $this->assertModuleList($module_list, t('After changing weights'));
+
+ // Test the fixed list feature.
+ $fixed_list = array(
+ 'system' => array('filename' => drupal_get_path('module', 'system')),
+ 'menu' => array('filename' => drupal_get_path('module', 'menu')),
+ );
+ module_list(FALSE, FALSE, FALSE, $fixed_list);
+ $new_module_list = array_combine(array_keys($fixed_list), array_keys($fixed_list));
+ $this->assertModuleList($new_module_list, t('When using a fixed list'));
+
+ // Reset the module list.
+ module_list(TRUE);
+ $this->assertModuleList($module_list, t('After reset'));
+ }
+
+ /**
+ * Assert that module_list() return the expected values.
+ *
+ * @param $expected_values
+ * The expected values, sorted by weight and module name.
+ */
+ protected function assertModuleList(Array $expected_values, $condition) {
+ $expected_values = array_combine($expected_values, $expected_values);
+ $this->assertEqual($expected_values, module_list(), format_string('@condition: module_list() returns correct results', array('@condition' => $condition)));
+ ksort($expected_values);
+ $this->assertIdentical($expected_values, module_list(FALSE, FALSE, TRUE), format_string('@condition: module_list() returns correctly sorted results', array('@condition' => $condition)));
+ }
+
+ /**
+ * Test module_implements() caching.
+ */
+ function testModuleImplements() {
+ // Clear the cache.
+ cache_clear_all('module_implements', 'cache_bootstrap');
+ $this->assertFalse(cache_get('module_implements', 'cache_bootstrap'), 'The module implements cache is empty.');
+ $this->drupalGet('');
+ $this->assertTrue(cache_get('module_implements', 'cache_bootstrap'), 'The module implements cache is populated after requesting a page.');
+
+ // Test again with an authenticated user.
+ $this->user = $this->drupalCreateUser();
+ $this->drupalLogin($this->user);
+ cache_clear_all('module_implements', 'cache_bootstrap');
+ $this->drupalGet('');
+ $this->assertTrue(cache_get('module_implements', 'cache_bootstrap'), 'The module implements cache is populated after requesting a page.');
+
+ // Make sure group include files are detected properly even when the file is
+ // already loaded when the cache is rebuilt.
+ // For that activate the module_test which provides the file to load.
+ module_enable(array('module_test'));
+
+ module_load_include('inc', 'module_test', 'module_test.file');
+ $modules = module_implements('test_hook');
+ $static = drupal_static('module_implements');
+ $this->assertTrue(in_array('module_test', $modules), 'Hook found.');
+ $this->assertEqual($static['test_hook']['module_test'], 'file', 'Include file detected.');
+ }
+
+ /**
+ * Test that module_invoke() can load a hook defined in hook_hook_info().
+ */
+ function testModuleInvoke() {
+ module_enable(array('module_test'), FALSE);
+ $this->resetAll();
+ $this->drupalGet('module-test/hook-dynamic-loading-invoke');
+ $this->assertText('success!', 'module_invoke() dynamically loads a hook defined in hook_hook_info().');
+ }
+
+ /**
+ * Test that module_invoke_all() can load a hook defined in hook_hook_info().
+ */
+ function testModuleInvokeAll() {
+ module_enable(array('module_test'), FALSE);
+ $this->resetAll();
+ $this->drupalGet('module-test/hook-dynamic-loading-invoke-all');
+ $this->assertText('success!', 'module_invoke_all() dynamically loads a hook defined in hook_hook_info().');
+ }
+
+ /**
+ * Test dependency resolution.
+ */
+ function testDependencyResolution() {
+ // Enable the test module, and make sure that other modules we are testing
+ // are not already enabled. (If they were, the tests below would not work
+ // correctly.)
+ module_enable(array('module_test'), FALSE);
+ $this->assertTrue(module_exists('module_test'), 'Test module is enabled.');
+ $this->assertFalse(module_exists('forum'), 'Forum module is disabled.');
+ $this->assertFalse(module_exists('poll'), 'Poll module is disabled.');
+ $this->assertFalse(module_exists('php'), 'PHP module is disabled.');
+
+ // First, create a fake missing dependency. Forum depends on poll, which
+ // depends on a made-up module, foo. Nothing should be installed.
+ variable_set('dependency_test', 'missing dependency');
+ drupal_static_reset('system_rebuild_module_data');
+ $result = module_enable(array('forum'));
+ $this->assertFalse($result, 'module_enable() returns FALSE if dependencies are missing.');
+ $this->assertFalse(module_exists('forum'), 'module_enable() aborts if dependencies are missing.');
+
+ // Now, fix the missing dependency. Forum module depends on poll, but poll
+ // depends on the PHP module. module_enable() should work.
+ variable_set('dependency_test', 'dependency');
+ drupal_static_reset('system_rebuild_module_data');
+ $result = module_enable(array('forum'));
+ $this->assertTrue($result, 'module_enable() returns the correct value.');
+ // Verify that the fake dependency chain was installed.
+ $this->assertTrue(module_exists('poll') && module_exists('php'), 'Dependency chain was installed by module_enable().');
+ // Verify that the original module was installed.
+ $this->assertTrue(module_exists('forum'), 'Module installation with unlisted dependencies succeeded.');
+ // Finally, verify that the modules were enabled in the correct order.
+ $this->assertEqual(variable_get('test_module_enable_order', array()), array('php', 'poll', 'forum'), 'Modules were enabled in the correct order by module_enable().');
+
+ // Now, disable the PHP module. Both forum and poll should be disabled as
+ // well, in the correct order.
+ module_disable(array('php'));
+ $this->assertTrue(!module_exists('forum') && !module_exists('poll'), 'Depedency chain was disabled by module_disable().');
+ $this->assertFalse(module_exists('php'), 'Disabling a module with unlisted dependents succeeded.');
+ $this->assertEqual(variable_get('test_module_disable_order', array()), array('forum', 'poll', 'php'), 'Modules were disabled in the correct order by module_disable().');
+
+ // Disable a module that is listed as a dependency by the installation
+ // profile. Make sure that the profile itself is not on the list of
+ // dependent modules to be disabled.
+ $profile = drupal_get_profile();
+ $info = install_profile_info($profile);
+ $this->assertTrue(in_array('comment', $info['dependencies']), 'Comment module is listed as a dependency of the installation profile.');
+ $this->assertTrue(module_exists('comment'), 'Comment module is enabled.');
+ module_disable(array('comment'));
+ $this->assertFalse(module_exists('comment'), 'Comment module was disabled.');
+ $disabled_modules = variable_get('test_module_disable_order', array());
+ $this->assertTrue(in_array('comment', $disabled_modules), 'Comment module is in the list of disabled modules.');
+ $this->assertFalse(in_array($profile, $disabled_modules), 'The installation profile is not in the list of disabled modules.');
+
+ // Try to uninstall the PHP module by itself. This should be rejected,
+ // since the modules which it depends on need to be uninstalled first, and
+ // that is too destructive to perform automatically.
+ $result = drupal_uninstall_modules(array('php'));
+ $this->assertFalse($result, 'Calling drupal_uninstall_modules() on a module whose dependents are not uninstalled fails.');
+ foreach (array('forum', 'poll', 'php') as $module) {
+ $this->assertNotEqual(drupal_get_installed_schema_version($module), SCHEMA_UNINSTALLED, format_string('The @module module was not uninstalled.', array('@module' => $module)));
+ }
+
+ // Now uninstall all three modules explicitly, but in the incorrect order,
+ // and make sure that drupal_uninstal_modules() uninstalled them in the
+ // correct sequence.
+ $result = drupal_uninstall_modules(array('poll', 'php', 'forum'));
+ $this->assertTrue($result, 'drupal_uninstall_modules() returns the correct value.');
+ foreach (array('forum', 'poll', 'php') as $module) {
+ $this->assertEqual(drupal_get_installed_schema_version($module), SCHEMA_UNINSTALLED, format_string('The @module module was uninstalled.', array('@module' => $module)));
+ }
+ $this->assertEqual(variable_get('test_module_uninstall_order', array()), array('forum', 'poll', 'php'), 'Modules were uninstalled in the correct order by drupal_uninstall_modules().');
+
+ // Uninstall the profile module from above, and make sure that the profile
+ // itself is not on the list of dependent modules to be uninstalled.
+ $result = drupal_uninstall_modules(array('comment'));
+ $this->assertTrue($result, 'drupal_uninstall_modules() returns the correct value.');
+ $this->assertEqual(drupal_get_installed_schema_version('comment'), SCHEMA_UNINSTALLED, 'Comment module was uninstalled.');
+ $uninstalled_modules = variable_get('test_module_uninstall_order', array());
+ $this->assertTrue(in_array('comment', $uninstalled_modules), 'Comment module is in the list of uninstalled modules.');
+ $this->assertFalse(in_array($profile, $uninstalled_modules), 'The installation profile is not in the list of uninstalled modules.');
+
+ // Enable forum module again, which should enable both the poll module and
+ // php module. But, this time do it with poll module declaring a dependency
+ // on a specific version of php module in its info file. Make sure that
+ // module_enable() still works.
+ variable_set('dependency_test', 'version dependency');
+ drupal_static_reset('system_rebuild_module_data');
+ $result = module_enable(array('forum'));
+ $this->assertTrue($result, 'module_enable() returns the correct value.');
+ // Verify that the fake dependency chain was installed.
+ $this->assertTrue(module_exists('poll') && module_exists('php'), 'Dependency chain was installed by module_enable().');
+ // Verify that the original module was installed.
+ $this->assertTrue(module_exists('forum'), 'Module installation with version dependencies succeeded.');
+ // Finally, verify that the modules were enabled in the correct order.
+ $enable_order = variable_get('test_module_enable_order', array());
+ $php_position = array_search('php', $enable_order);
+ $poll_position = array_search('poll', $enable_order);
+ $forum_position = array_search('forum', $enable_order);
+ $php_before_poll = $php_position !== FALSE && $poll_position !== FALSE && $php_position < $poll_position;
+ $poll_before_forum = $poll_position !== FALSE && $forum_position !== FALSE && $poll_position < $forum_position;
+ $this->assertTrue($php_before_poll && $poll_before_forum, 'Modules were enabled in the correct order by module_enable().');
+ }
+}
+
+/**
+ * Unit tests for module installation.
+ */
+class ModuleInstallTestCase extends DrupalWebTestCase {
+ public static function getInfo() {
+ return array(
+ 'name' => 'Module installation',
+ 'description' => 'Tests the installation of modules.',
+ 'group' => 'Module',
+ );
+ }
+
+ function setUp() {
+ parent::setUp('module_test');
+ }
+
+ /**
+ * Test that calls to drupal_write_record() work during module installation.
+ *
+ * This is a useful function to test because modules often use it to insert
+ * initial data in their database tables when they are being installed or
+ * enabled. Furthermore, drupal_write_record() relies on the module schema
+ * information being available, so this also checks that the data from one of
+ * the module's hook implementations, in particular hook_schema(), is
+ * properly available during this time. Therefore, this test helps ensure
+ * that modules are fully functional while Drupal is installing and enabling
+ * them.
+ */
+ function testDrupalWriteRecord() {
+ // Check for data that was inserted using drupal_write_record() while the
+ // 'module_test' module was being installed and enabled.
+ $data = db_query("SELECT data FROM {module_test}")->fetchCol();
+ $this->assertTrue(in_array('Data inserted in hook_install()', $data), 'Data inserted using drupal_write_record() in hook_install() is correctly saved.');
+ $this->assertTrue(in_array('Data inserted in hook_enable()', $data), 'Data inserted using drupal_write_record() in hook_enable() is correctly saved.');
+ }
+}
+
+/**
+ * Unit tests for module uninstallation and related hooks.
+ */
+class ModuleUninstallTestCase extends DrupalWebTestCase {
+ public static function getInfo() {
+ return array(
+ 'name' => 'Module uninstallation',
+ 'description' => 'Tests the uninstallation of modules.',
+ 'group' => 'Module',
+ );
+ }
+
+ function setUp() {
+ parent::setUp('module_test', 'user');
+ }
+
+ /**
+ * Tests the hook_modules_uninstalled() of the user module.
+ */
+ function testUserPermsUninstalled() {
+ // Uninstalls the module_test module, so hook_modules_uninstalled()
+ // is executed.
+ module_disable(array('module_test'));
+ drupal_uninstall_modules(array('module_test'));
+
+ // Are the perms defined by module_test removed from {role_permission}.
+ $count = db_query("SELECT COUNT(rid) FROM {role_permission} WHERE permission = :perm", array(':perm' => 'module_test perm'))->fetchField();
+ $this->assertEqual(0, $count, 'Permissions were all removed.');
+ }
+}