class ElementInfoManagerTest

class ElementInfoManagerTest extends UnitTestCase {
    
    /**
     * The mocked element_info.
     *
     * @var \Drupal\Core\Render\ElementInfoManagerInterface
     */
    protected $elementInfo;
    
    /**
     * The cache backend to use.
     *
     * @var \Drupal\Core\Cache\CacheBackendInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $cache;
    
    /**
     * The mocked module handler.
     *
     * @var \Drupal\Core\Extension\ModuleHandlerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $moduleHandler;
    
    /**
     * The mocked theme manager.
     *
     * @var \Drupal\Core\Theme\ThemeManagerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $themeManager;
    
    /**
     * The mocked theme handler.
     *
     * @var \Drupal\Core\Extension\ThemeHandlerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $themeHandler;
    
    /**
     * {@inheritdoc}
     *
     * @covers ::__construct
     */
    protected function setUp() : void {
        parent::setUp();
        $this->cache = $this->createMock('Drupal\\Core\\Cache\\CacheBackendInterface');
        $this->themeHandler = $this->createMock(ThemeHandlerInterface::class);
        $this->moduleHandler = $this->createMock('Drupal\\Core\\Extension\\ModuleHandlerInterface');
        $this->themeManager = $this->createMock('Drupal\\Core\\Theme\\ThemeManagerInterface');
        $this->elementInfo = new ElementInfoManager(new \ArrayObject(), $this->cache, $this->themeHandler, $this->moduleHandler, $this->themeManager);
    }
    
    /**
     * Tests the getInfo() method when render element plugins are used.
     *
     * @covers ::getInfo
     * @covers ::buildInfo
     *
     * @dataProvider providerTestGetInfoElementPlugin
     */
    public function testGetInfoElementPlugin($plugin_class, $expected_info) : void {
        $this->moduleHandler
            ->expects($this->once())
            ->method('alter')
            ->with('element_info', $this->anything())
            ->willReturnArgument(0);
        $plugin = $this->createMock($plugin_class);
        $plugin->expects($this->once())
            ->method('getInfo')
            ->willReturn([
            '#theme' => 'page',
        ]);
        $element_info = $this->getMockBuilder('Drupal\\Core\\Render\\ElementInfoManager')
            ->setConstructorArgs([
            new \ArrayObject(),
            $this->cache,
            $this->themeHandler,
            $this->moduleHandler,
            $this->themeManager,
        ])
            ->onlyMethods([
            'getDefinitions',
            'createInstance',
        ])
            ->getMock();
        $this->themeManager
            ->expects($this->any())
            ->method('getActiveTheme')
            ->willReturn(new ActiveTheme([
            'name' => 'test',
        ]));
        $element_info->expects($this->once())
            ->method('createInstance')
            ->with('page')
            ->willReturn($plugin);
        $element_info->expects($this->once())
            ->method('getDefinitions')
            ->willReturn([
            'page' => [
                'class' => 'TestElementPlugin',
            ],
        ]);
        $this->assertEquals($expected_info, $element_info->getInfo('page'));
    }
    
    /**
     * Provides tests data for testGetInfoElementPlugin().
     *
     * @return array
     */
    public static function providerTestGetInfoElementPlugin() {
        $data = [];
        $data[] = [
            'Drupal\\Core\\Render\\Element\\ElementInterface',
            [
                '#type' => 'page',
                '#theme' => 'page',
                '#defaults_loaded' => TRUE,
            ],
        ];
        $data[] = [
            'Drupal\\Core\\Render\\Element\\FormElementInterface',
            [
                '#type' => 'page',
                '#theme' => 'page',
                '#input' => TRUE,
                '#value_callback' => [
                    'TestElementPlugin',
                    'valueCallback',
                ],
                '#defaults_loaded' => TRUE,
            ],
        ];
        return $data;
    }
    
    /**
     * @covers ::getInfoProperty
     */
    public function testGetInfoProperty() : void {
        $this->themeManager
            ->method('getActiveTheme')
            ->willReturn(new ActiveTheme([
            'name' => 'test',
        ]));
        $element_info = new TestElementInfoManager(new \ArrayObject(), $this->cache, $this->themeHandler, $this->moduleHandler, $this->themeManager);
        $this->assertSame('baz', $element_info->getInfoProperty('foo', '#bar'));
        $this->assertNull($element_info->getInfoProperty('foo', '#non_existing_property'));
        $this->assertSame('qux', $element_info->getInfoProperty('foo', '#non_existing_property', 'qux'));
    }

}