class EntityLinkTest

class EntityLinkTest extends UnitTestCase {
    
    /**
     * The mocked entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $entityTypeManager;
    
    /**
     * The tested link generator.
     *
     * @var \Drupal\Core\Utility\LinkGeneratorInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $linkGenerator;
    
    /**
     * The mocked language manager.
     *
     * @var \Drupal\Core\Language\LanguageManagerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $languageManager;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->entityTypeManager = $this->createMock(EntityTypeManagerInterface::class);
        $this->linkGenerator = $this->createMock('Drupal\\Core\\Utility\\LinkGeneratorInterface');
        $this->languageManager = $this->createMock('Drupal\\Core\\Language\\LanguageManagerInterface');
        $container = new ContainerBuilder();
        $container->set('entity_type.manager', $this->entityTypeManager);
        $container->set('link_generator', $this->linkGenerator);
        $container->set('language_manager', $this->languageManager);
        \Drupal::setContainer($container);
    }
    
    /**
     * Tests for the EntityBase::toLink() method.
     *
     * @covers ::toLink
     *
     * @dataProvider providerTestLink
     */
    public function testToLink($entity_label, $link_text, $expected_text, $link_rel = 'canonical', array $link_options = []) : void {
        $language = new Language([
            'id' => 'es',
        ]);
        $link_options += [
            'language' => $language,
        ];
        $this->languageManager
            ->expects($this->any())
            ->method('getLanguage')
            ->with('es')
            ->willReturn($language);
        $route_name_map = [
            'canonical' => 'entity.test_entity_type.canonical',
            'edit-form' => 'entity.test_entity_type.edit_form',
        ];
        $route_name = $route_name_map[$link_rel];
        $entity_id = 'test_entity_id';
        $entity_type_id = 'test_entity_type';
        $entity_type = $this->createMock('Drupal\\Core\\Entity\\EntityTypeInterface');
        $entity_type->expects($this->once())
            ->method('getLinkTemplates')
            ->willReturn($route_name_map);
        $entity_type->expects($this->any())
            ->method('getKey')
            ->willReturnMap([
            [
                'label',
                'label',
            ],
            [
                'langcode',
                'langcode',
            ],
        ]);
        $this->entityTypeManager
            ->expects($this->any())
            ->method('getDefinition')
            ->with($entity_type_id)
            ->willReturn($entity_type);
        $entity = new StubConfigEntity([
            'id' => $entity_id,
            'label' => $entity_label,
            'langcode' => 'es',
        ], $entity_type_id);
        $expected_link = Link::createFromRoute($expected_text, $route_name, [
            $entity_type_id => $entity_id,
        ], [
            'entity_type' => $entity_type_id,
            'entity' => $entity,
        ] + $link_options);
        $result_link = $entity->toLink($link_text, $link_rel, $link_options);
        $this->assertEquals($expected_link, $result_link);
    }
    
    /**
     * Provides test data for testLink().
     */
    public static function providerTestLink() {
        $data = [];
        $data[] = [
            'some_entity_label',
            'link text',
            'link text',
        ];
        $data[] = [
            'some_entity_label',
            NULL,
            'some_entity_label',
        ];
        $data[] = [
            'some_entity_label',
            '0',
            '0',
        ];
        $data[] = [
            'some_entity_label',
            'link text',
            'link text',
            'edit-form',
        ];
        $data[] = [
            'some_entity_label',
            'link text',
            'link text',
            'edit-form',
        ];
        $data[] = [
            'some_entity_label',
            'link text',
            'link text',
            'edit-form',
            [
                'foo' => 'bar',
            ],
        ];
        return $data;
    }

}