class DependencyTest

class DependencyTest extends ModuleTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Checks functionality of project namespaces for dependencies.
     */
    public function testProjectNamespaceForDependencies() {
        $edit = [
            'modules[filter][enable]' => TRUE,
        ];
        $this->drupalGet('admin/modules');
        $this->submitForm($edit, 'Install');
        // Enable module with project namespace to ensure nothing breaks.
        $edit = [
            'modules[system_project_namespace_test][enable]' => TRUE,
        ];
        $this->drupalGet('admin/modules');
        $this->submitForm($edit, 'Install');
        $this->assertModules([
            'system_project_namespace_test',
        ], TRUE);
    }
    
    /**
     * Attempts to enable the Content Translation module without Language enabled.
     */
    public function testEnableWithoutDependency() {
        // Attempt to enable Content Translation without Language enabled.
        $edit = [];
        $edit['modules[content_translation][enable]'] = 'content_translation';
        $this->drupalGet('admin/modules');
        $this->submitForm($edit, 'Install');
        $this->assertSession()
            ->pageTextContains('Some required modules must be enabled');
        $this->assertModules([
            'content_translation',
            'language',
        ], FALSE);
        // Assert that the language module config was not installed.
        $this->assertNoModuleConfig('language');
        $this->submitForm([], 'Continue');
        $this->assertSession()
            ->pageTextContains('2 modules have been enabled: Content Translation, Language.');
        $this->assertModules([
            'content_translation',
            'language',
        ], TRUE);
        // Assert that the language YAML files were created.
        $storage = $this->container
            ->get('config.storage');
        $this->assertNotEmpty($storage->listAll('language.entity.'), 'Language config entity files exist.');
    }
    
    /**
     * Attempts to enable a module with a missing dependency.
     */
    public function testMissingModules() {
        // Test that the system_dependencies_test module is marked
        // as missing a dependency.
        $this->drupalGet('admin/modules');
        $this->assertSession()
            ->pageTextContains(Unicode::ucfirst('_missing_dependency') . ' (missing)');
        $this->assertSession()
            ->elementTextEquals('xpath', '//tr[@data-drupal-selector="edit-modules-system-dependencies-test"]//span[@class="admin-missing"]', 'missing');
        $this->assertSession()
            ->checkboxNotChecked('modules[system_dependencies_test][enable]');
    }
    
    /**
     * Tests enabling a module with an incompatible dependency version.
     */
    public function testIncompatibleModuleVersionDependency() {
        // Test that the system_incompatible_module_version_dependencies_test is
        // marked as having an incompatible dependency.
        $this->drupalGet('admin/modules');
        $this->assertSession()
            ->pageTextContains('System incompatible module version test (>2.0) (incompatible with version 1.0)');
        $this->assertSession()
            ->elementTextEquals('xpath', '//tr[@data-drupal-selector="edit-modules-system-incompatible-module-version-dependencies-test"]//span[@class="admin-missing"]', 'incompatible with');
        $this->assertSession()
            ->fieldDisabled('modules[system_incompatible_module_version_dependencies_test][enable]');
    }
    
    /**
     * Tests enabling a module that depends on a module with an incompatible core version.
     */
    public function testIncompatibleCoreVersionDependency() {
        // Test that the system_incompatible_core_version_dependencies_test is
        // marked as having an incompatible dependency.
        $this->drupalGet('admin/modules');
        $this->assertSession()
            ->pageTextContains('System core incompatible semver test (incompatible with this version of Drupal core)');
        $this->assertSession()
            ->elementTextEquals('xpath', '//tr[@data-drupal-selector="edit-modules-system-incompatible-core-version-dependencies-test"]//span[@class="admin-missing"]', 'incompatible with');
        $this->assertSession()
            ->fieldDisabled('modules[system_incompatible_core_version_dependencies_test][enable]');
    }
    
    /**
     * Tests visiting admin/modules when a module outside of core has no version.
     */
    public function testNoVersionInfo() {
        // Create a module for testing. We set core_version_requirement to '*' for
        // the test so that it does not need to be updated between major versions.
        $info = [
            'type' => 'module',
            'core_version_requirement' => '*',
            'name' => 'System no module version dependency test',
        ];
        $path = $this->siteDirectory . '/modules/system_no_module_version_dependency_test';
        mkdir($path, 0777, TRUE);
        file_put_contents("{$path}/system_no_module_version_dependency_test.info.yml", Yaml::encode($info));
        // Include a version in the dependency definition, to test the 'incompatible
        // with version' message when no version is given in the required module.
        $info = [
            'type' => 'module',
            'core_version_requirement' => '*',
            'name' => 'System no module version test',
            'dependencies' => [
                'system_no_module_version_dependency_test(>1.x)',
            ],
        ];
        $path = $this->siteDirectory . '/modules/system_no_module_version_test';
        mkdir($path, 0777, TRUE);
        file_put_contents("{$path}/system_no_module_version_test.info.yml", Yaml::encode($info));
        // Ensure that the module list page is displayed without errors.
        $this->drupalGet('admin/modules');
        $this->assertSession()
            ->pageTextContains('System no module version test');
        $this->assertSession()
            ->pageTextContains('System no module version dependency test (>1.x) (incompatible with version');
        $this->assertSession()
            ->fieldEnabled('modules[system_no_module_version_dependency_test][enable]');
        $this->assertSession()
            ->fieldDisabled('modules[system_no_module_version_test][enable]');
        // Remove the version requirement from the the dependency definition
        $info = [
            'type' => 'module',
            'core_version_requirement' => '*',
            'name' => 'System no module version test',
            'dependencies' => [
                'system_no_module_version_dependency_test',
            ],
        ];
        $path = $this->siteDirectory . '/modules/system_no_module_version_test';
        file_put_contents("{$path}/system_no_module_version_test.info.yml", Yaml::encode($info));
        $this->drupalGet('admin/modules');
        $this->assertSession()
            ->pageTextContains('System no module version dependency test');
        $this->assertSession()
            ->pageTextContains('System no module version test');
        // Ensure the modules can actually be installed.
        $edit['modules[system_no_module_version_test][enable]'] = 'system_no_module_version_test';
        $edit['modules[system_no_module_version_dependency_test][enable]'] = 'system_no_module_version_dependency_test';
        $this->drupalGet('admin/modules');
        $this->submitForm($edit, 'Install');
        $this->assertSession()
            ->pageTextContains('2 modules have been enabled: System no module version dependency test, System no module version test.');
        // Ensure status report is working.
        $this->drupalLogin($this->createUser([
            'administer site configuration',
        ]));
        $this->drupalGet('admin/reports/status');
        $this->assertSession()
            ->statusCodeEquals(200);
    }
    
    /**
     * Tests failing PHP version requirements.
     */
    public function testIncompatiblePhpVersionDependency() {
        $this->drupalGet('admin/modules');
        $this->assertSession()
            ->pageTextContains('This module requires PHP version 6502.* and is incompatible with PHP version ' . phpversion() . '.');
        $this->assertSession()
            ->fieldDisabled('modules[system_incompatible_php_version_test][enable]');
    }
    
    /**
     * Tests enabling modules with different core version specifications.
     */
    public function testCoreCompatibility() {
        $assert_session = $this->assertSession();
        // Test incompatible 'core_version_requirement'.
        $this->drupalGet('admin/modules');
        $assert_session->fieldDisabled('modules[system_core_incompatible_semver_test][enable]');
        // Test compatible 'core_version_requirement' and compatible 'core'.
        $this->drupalGet('admin/modules');
        $assert_session->fieldEnabled('modules[common_test][enable]');
        $assert_session->fieldEnabled('modules[system_core_semver_test][enable]');
        // Ensure the modules can actually be installed.
        $edit['modules[common_test][enable]'] = 'common_test';
        $edit['modules[system_core_semver_test][enable]'] = 'system_core_semver_test';
        $this->drupalGet('admin/modules');
        $this->submitForm($edit, 'Install');
        $this->assertModules([
            'common_test',
            'system_core_semver_test',
        ], TRUE);
    }
    
    /**
     * Tests the dependency checks when core version contains '8.x' within it.
     */
    public function testCoreVersionContains8X() {
        // Enable the helper module that alters the version and dependencies.
        \Drupal::service('module_installer')->install([
            'dependency_version_test',
        ]);
        // Check that the above module installed OK.
        $this->drupalGet('admin/modules');
        $this->assertModules([
            'dependency_version_test',
        ], TRUE);
        // Check that test_module dependencies are met and the box is not greyed.
        $this->assertSession()
            ->fieldEnabled('modules[test_module][enable]');
    }
    
    /**
     * Tests enabling a module that depends on a module which fails hook_requirements().
     */
    public function testEnableRequirementsFailureDependency() {
        \Drupal::service('module_installer')->install([
            'comment',
        ]);
        $this->assertModules([
            'requirements1_test',
        ], FALSE);
        $this->assertModules([
            'requirements2_test',
        ], FALSE);
        // Attempt to install both modules at the same time.
        $edit = [];
        $edit['modules[requirements1_test][enable]'] = 'requirements1_test';
        $edit['modules[requirements2_test][enable]'] = 'requirements2_test';
        $this->drupalGet('admin/modules');
        $this->submitForm($edit, 'Install');
        // Makes sure the modules were NOT installed.
        $this->assertSession()
            ->pageTextContains('Requirements 1 Test failed requirements');
        $this->assertModules([
            'requirements1_test',
        ], FALSE);
        $this->assertModules([
            'requirements2_test',
        ], FALSE);
        // Makes sure that already enabled modules the failing modules depend on
        // were not disabled.
        $this->assertModules([
            'comment',
        ], TRUE);
    }
    
    /**
     * Tests that module dependencies are enabled in the correct order in the UI.
     *
     * Dependencies should be enabled before their dependents.
     */
    public function testModuleEnableOrder() {
        \Drupal::service('module_installer')->install([
            'module_test',
        ], FALSE);
        $this->resetAll();
        $this->assertModules([
            'module_test',
        ], TRUE);
        \Drupal::state()->set('module_test.dependency', 'dependency');
        // module_test creates a dependency chain:
        // - dblog depends on config
        // - config depends on help
        $expected_order = [
            'help',
            'config',
            'dblog',
        ];
        // Enable the modules through the UI, verifying that the dependency chain
        // is correct.
        $edit = [];
        $edit['modules[dblog][enable]'] = 'dblog';
        $this->drupalGet('admin/modules');
        $this->submitForm($edit, 'Install');
        $this->assertModules([
            'dblog',
        ], FALSE);
        // Note that dependencies are sorted alphabetically in the confirmation
        // message.
        $this->assertSession()
            ->pageTextContains('You must enable the Configuration Manager, Help modules to install Database Logging.');
        $edit['modules[config][enable]'] = 'config';
        $edit['modules[help][enable]'] = 'help';
        $this->drupalGet('admin/modules');
        $this->submitForm($edit, 'Install');
        $this->assertModules([
            'dblog',
            'config',
            'help',
        ], TRUE);
        // Check the actual order which is saved by module_test_modules_enabled().
        $module_order = \Drupal::state()->get('module_test.install_order', []);
        $this->assertSame($expected_order, $module_order);
    }
    
    /**
     * Tests attempting to uninstall a module that has installed dependents.
     */
    public function testUninstallDependents() {
        // Enable the forum module.
        $edit = [
            'modules[forum][enable]' => 'forum',
        ];
        $this->drupalGet('admin/modules');
        $this->submitForm($edit, 'Install');
        $this->submitForm([], 'Continue');
        $this->assertModules([
            'forum',
        ], TRUE);
        // Check that the comment module cannot be uninstalled.
        $this->drupalGet('admin/modules/uninstall');
        $this->assertSession()
            ->fieldDisabled('uninstall[comment]');
        // Delete any forum terms.
        $vid = $this->config('forum.settings')
            ->get('vocabulary');
        // Ensure taxonomy has been loaded into the test-runner after forum was
        // enabled.
        \Drupal::moduleHandler()->load('taxonomy');
        $storage = \Drupal::entityTypeManager()->getStorage('taxonomy_term');
        $terms = $storage->loadByProperties([
            'vid' => $vid,
        ]);
        $storage->delete($terms);
        // Uninstall the forum module, and check that taxonomy now can also be
        // uninstalled.
        $edit = [
            'uninstall[forum]' => 'forum',
        ];
        $this->drupalGet('admin/modules/uninstall');
        $this->submitForm($edit, 'Uninstall');
        $this->submitForm([], 'Uninstall');
        $this->assertSession()
            ->pageTextContains('The selected modules have been uninstalled.');
        // Uninstall comment module.
        $edit = [
            'uninstall[comment]' => 'comment',
        ];
        $this->drupalGet('admin/modules/uninstall');
        $this->submitForm($edit, 'Uninstall');
        $this->submitForm([], 'Uninstall');
        $this->assertSession()
            ->pageTextContains('The selected modules have been uninstalled.');
    }

}