class AssetResolverTest

class AssetResolverTest extends UnitTestCase {
    
    /**
     * The tested asset resolver service.
     *
     * @var \Drupal\Core\Asset\AssetResolver
     */
    protected $assetResolver;
    
    /**
     * The mocked library discovery service.
     *
     * @var \Drupal\Core\Asset\LibraryDiscoveryInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $libraryDiscovery;
    
    /**
     * The mocked library dependency resolver.
     *
     * @var \Drupal\Core\Asset\LibraryDependencyResolverInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $libraryDependencyResolver;
    
    /**
     * 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 language manager.
     *
     * @var \Drupal\Core\Language\LanguageManagerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $languageManager;
    
    /**
     * The cache backend to use.
     *
     * @var \Drupal\Core\Cache\CacheBackendInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $cache;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->libraryDiscovery = $this->getMockBuilder('Drupal\\Core\\Asset\\LibraryDiscovery')
            ->disableOriginalConstructor()
            ->getMock();
        $this->libraryDependencyResolver = $this->createMock('\\Drupal\\Core\\Asset\\LibraryDependencyResolverInterface');
        $this->libraryDependencyResolver
            ->expects($this->any())
            ->method('getLibrariesWithDependencies')
            ->willReturnArgument(0);
        $this->moduleHandler = $this->createMock('\\Drupal\\Core\\Extension\\ModuleHandlerInterface');
        $this->themeManager = $this->createMock('\\Drupal\\Core\\Theme\\ThemeManagerInterface');
        $active_theme = $this->getMockBuilder('\\Drupal\\Core\\Theme\\ActiveTheme')
            ->disableOriginalConstructor()
            ->getMock();
        $this->themeManager
            ->expects($this->any())
            ->method('getActiveTheme')
            ->willReturn($active_theme);
        $this->languageManager = $this->createMock('\\Drupal\\Core\\Language\\LanguageManagerInterface');
        $english = $this->createMock('\\Drupal\\Core\\Language\\LanguageInterface');
        $english->expects($this->any())
            ->method('getId')
            ->willReturn('en');
        $japanese = $this->createMock('\\Drupal\\Core\\Language\\LanguageInterface');
        $japanese->expects($this->any())
            ->method('getId')
            ->willReturn('jp');
        $this->languageManager = $this->createMock('\\Drupal\\Core\\Language\\LanguageManagerInterface');
        $this->languageManager
            ->expects($this->any())
            ->method('getCurrentLanguage')
            ->will($this->onConsecutiveCalls($english, $english, $japanese, $japanese));
        $this->cache = new TestMemoryBackend();
        $this->assetResolver = new AssetResolver($this->libraryDiscovery, $this->libraryDependencyResolver, $this->moduleHandler, $this->themeManager, $this->languageManager, $this->cache);
    }
    
    /**
     * @covers ::getCssAssets
     * @dataProvider providerAttachedAssets
     */
    public function testGetCssAssets(AttachedAssetsInterface $assets_a, AttachedAssetsInterface $assets_b, $expected_cache_item_count) {
        $this->assetResolver
            ->getCssAssets($assets_a, FALSE);
        $this->assetResolver
            ->getCssAssets($assets_b, FALSE);
        $this->assertCount($expected_cache_item_count, $this->cache
            ->getAllCids());
    }
    
    /**
     * @covers ::getJsAssets
     * @dataProvider providerAttachedAssets
     */
    public function testGetJsAssets(AttachedAssetsInterface $assets_a, AttachedAssetsInterface $assets_b, $expected_cache_item_count) {
        $this->assetResolver
            ->getJsAssets($assets_a, FALSE);
        $this->assetResolver
            ->getJsAssets($assets_b, FALSE);
        $this->assertCount($expected_cache_item_count, $this->cache
            ->getAllCids());
        $this->assetResolver
            ->getJsAssets($assets_a, FALSE);
        $this->assetResolver
            ->getJsAssets($assets_b, FALSE);
        $this->assertCount($expected_cache_item_count * 2, $this->cache
            ->getAllCids());
    }
    public function providerAttachedAssets() {
        $time = time();
        return [
            'same libraries, different timestamps' => [
                (new AttachedAssets())->setAlreadyLoadedLibraries([])
                    ->setLibraries([
                    'core/drupal',
                ])
                    ->setSettings([
                    'currentTime' => $time,
                ]),
                (new AttachedAssets())->setAlreadyLoadedLibraries([])
                    ->setLibraries([
                    'core/drupal',
                ])
                    ->setSettings([
                    'currentTime' => $time + 100,
                ]),
                1,
            ],
            'different libraries, same timestamps' => [
                (new AttachedAssets())->setAlreadyLoadedLibraries([])
                    ->setLibraries([
                    'core/drupal',
                ])
                    ->setSettings([
                    'currentTime' => $time,
                ]),
                (new AttachedAssets())->setAlreadyLoadedLibraries([])
                    ->setLibraries([
                    'core/drupal',
                    'core/jquery',
                ])
                    ->setSettings([
                    'currentTime' => $time,
                ]),
                2,
            ],
        ];
    }

}