class DatabaseTest

class DatabaseTest extends UnitTestCase {
    
    /**
     * A classloader to enable testing of contrib drivers.
     *
     * @var \Composer\Autoload\ClassLoader
     */
    protected $additionalClassloader;
    
    /**
     * Path to DRUPAL_ROOT.
     *
     * @var string
     */
    protected $root;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        $this->additionalClassloader = new ClassLoader();
        $this->additionalClassloader
            ->register();
        // Mock the container so we don't need to mock drupal_valid_test_ua().
        // @see \Drupal\Core\Extension\ExtensionDiscovery::scan()
        $this->root = dirname(dirname(dirname(dirname(dirname(dirname(__DIR__))))));
        $container = $this->createMock(ContainerInterface::class);
        $container->expects($this->any())
            ->method('has')
            ->with('kernel')
            ->willReturn(TRUE);
        $container->expects($this->any())
            ->method('get')
            ->with('site.path')
            ->willReturn('');
        \Drupal::setContainer($container);
    }
    
    /**
     * @covers ::findDriverAutoloadDirectory
     * @dataProvider providerFindDriverAutoloadDirectory
     */
    public function testFindDriverAutoloadDirectory($expected, $namespace) {
        new Settings([
            'extension_discovery_scan_tests' => TRUE,
        ]);
        // The only module that provides a driver in core is a test module.
        $this->assertSame($expected, Database::findDriverAutoloadDirectory($namespace, $this->root));
    }
    
    /**
     * Data provider for ::testFindDriverAutoloadDirectory().
     *
     * @return array
     */
    public function providerFindDriverAutoloadDirectory() {
        return [
            'core mysql' => [
                FALSE,
                'Drupal\\Core\\Database\\Driver\\mysql',
            ],
            'D8 custom fake' => [
                FALSE,
                'Drupal\\Driver\\Database\\corefake',
            ],
            'module mysql' => [
                'core/modules/system/tests/modules/driver_test/src/Driver/Database/DrivertestMysql/',
                'Drupal\\driver_test\\Driver\\Database\\DrivertestMysql',
            ],
        ];
    }
    
    /**
     * @covers ::findDriverAutoloadDirectory
     * @dataProvider providerFindDriverAutoloadDirectoryException
     */
    public function testFindDriverAutoloadDirectoryException($expected_message, $namespace, $include_tests) {
        new Settings([
            'extension_discovery_scan_tests' => $include_tests,
        ]);
        if ($include_tests === FALSE) {
            // \Drupal\Core\Extension\ExtensionDiscovery::scan() needs
            // drupal_valid_test_ua().
            include $this->root . '/core/includes/bootstrap.inc';
        }
        $this->expectException(\RuntimeException::class);
        $this->expectExceptionMessage($expected_message);
        Database::findDriverAutoloadDirectory($namespace, $this->root);
    }
    
    /**
     * Data provider for ::testFindDriverAutoloadDirectoryException().
     *
     * @return array
     */
    public function providerFindDriverAutoloadDirectoryException() {
        return [
            'test module but tests not included' => [
                "Cannot find the module 'driver_test' for the database driver namespace 'Drupal\\driver_test\\Driver\\Database\\DrivertestMysql'",
                'Drupal\\driver_test\\Driver\\Database\\DrivertestMysql',
                FALSE,
            ],
            'non-existent driver in test module' => [
                "Cannot find the database driver namespace 'Drupal\\driver_test\\Driver\\Database\\sqlite' in module 'driver_test'",
                'Drupal\\driver_test\\Driver\\Database\\sqlite',
                TRUE,
            ],
            'non-existent module' => [
                "Cannot find the module 'does_not_exist' for the database driver namespace 'Drupal\\does_not_exist\\Driver\\Database\\mysql'",
                'Drupal\\does_not_exist\\Driver\\Database\\mysql',
                TRUE,
            ],
        ];
    }
    
    /**
     * Adds a database driver that uses the D8's Drupal\Driver\Database namespace.
     */
    protected function addD8CustomDrivers() {
        $this->additionalClassloader
            ->addPsr4("Drupal\\Driver\\Database\\corefake\\", __DIR__ . "/../../../../../tests/fixtures/database_drivers/custom/corefake");
    }
    
    /**
     * Adds database drivers that are provided by modules.
     */
    protected function addModuleDrivers() {
        $this->additionalClassloader
            ->addPsr4("Drupal\\driver_test\\Driver\\Database\\DrivertestMysql\\", __DIR__ . "/../../../../../modules/system/tests/modules/driver_test/src/Driver/Database/DrivertestMysql");
        $this->additionalClassloader
            ->addPsr4("Drupal\\corefake\\Driver\\Database\\corefake\\", __DIR__ . "/../../../../../tests/fixtures/database_drivers/module/corefake/src/Driver/Database/corefake");
    }

}