class LibraryDiscoveryCollectorTest

class LibraryDiscoveryCollectorTest extends UnitTestCase {
    
    /**
     * The mock cache backend.
     *
     * @var \Drupal\Core\Cache\CacheBackendInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $cache;
    
    /**
     * The mock lock backend.
     *
     * @var \Drupal\Core\Lock\LockBackendInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $lock;
    
    /**
     * The mock library discovery parser.
     *
     * @var \Drupal\Core\Asset\LibraryDiscoveryParser|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $libraryDiscoveryParser;
    
    /**
     * The library discovery collector under test.
     *
     * @var \Drupal\Core\Asset\LibraryDiscoveryCollector
     */
    protected $libraryDiscoveryCollector;
    
    /**
     * The mocked theme manager.
     *
     * @var \Drupal\Core\Theme\ThemeManagerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $themeManager;
    
    /**
     * Test library data.
     *
     * @var array
     */
    protected $libraryData = [
        'test_1' => [
            'js' => [],
            'css' => [],
        ],
        'test_2' => [
            'js' => [],
            'css' => [],
        ],
    ];
    protected $activeTheme;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        $this->cache = $this->createMock('Drupal\\Core\\Cache\\CacheBackendInterface');
        $this->lock = $this->createMock('Drupal\\Core\\Lock\\LockBackendInterface');
        $this->themeManager = $this->getMockBuilder('Drupal\\Core\\Theme\\ThemeManagerInterface')
            ->disableOriginalConstructor()
            ->getMock();
        $this->libraryDiscoveryParser = $this->getMockBuilder('Drupal\\Core\\Asset\\LibraryDiscoveryParser')
            ->disableOriginalConstructor()
            ->getMock();
    }
    
    /**
     * Tests the resolve cache miss function.
     *
     * @covers ::resolveCacheMiss
     */
    public function testResolveCacheMiss() {
        $this->activeTheme = $this->getMockBuilder('Drupal\\Core\\Theme\\ActiveTheme')
            ->disableOriginalConstructor()
            ->getMock();
        $this->themeManager
            ->expects($this->exactly(3))
            ->method('getActiveTheme')
            ->willReturn($this->activeTheme);
        $this->activeTheme
            ->expects($this->once())
            ->method('getName')
            ->willReturn('kitten_theme');
        $this->libraryDiscoveryCollector = new LibraryDiscoveryCollector($this->cache, $this->lock, $this->libraryDiscoveryParser, $this->themeManager);
        $this->libraryDiscoveryParser
            ->expects($this->once())
            ->method('buildByExtension')
            ->with('test')
            ->willReturn($this->libraryData);
        $this->assertSame($this->libraryData, $this->libraryDiscoveryCollector
            ->get('test'));
        $this->assertSame($this->libraryData, $this->libraryDiscoveryCollector
            ->get('test'));
    }
    
    /**
     * Tests the destruct method.
     *
     * @covers ::destruct
     */
    public function testDestruct() {
        $this->activeTheme = $this->getMockBuilder('Drupal\\Core\\Theme\\ActiveTheme')
            ->disableOriginalConstructor()
            ->getMock();
        $this->themeManager
            ->expects($this->exactly(3))
            ->method('getActiveTheme')
            ->willReturn($this->activeTheme);
        $this->activeTheme
            ->expects($this->once())
            ->method('getName')
            ->willReturn('kitten_theme');
        $this->libraryDiscoveryCollector = new LibraryDiscoveryCollector($this->cache, $this->lock, $this->libraryDiscoveryParser, $this->themeManager);
        $this->libraryDiscoveryParser
            ->expects($this->once())
            ->method('buildByExtension')
            ->with('test')
            ->willReturn($this->libraryData);
        $lock_key = 'library_info:kitten_theme:Drupal\\Core\\Cache\\CacheCollector';
        $this->lock
            ->expects($this->once())
            ->method('acquire')
            ->with($lock_key)
            ->will($this->returnValue(TRUE));
        $this->cache
            ->expects($this->exactly(2))
            ->method('get')
            ->with('library_info:kitten_theme')
            ->willReturn(FALSE);
        $this->cache
            ->expects($this->once())
            ->method('set')
            ->with('library_info:kitten_theme', [
            'test' => $this->libraryData,
        ], Cache::PERMANENT, [
            'library_info',
        ]);
        $this->lock
            ->expects($this->once())
            ->method('release')
            ->with($lock_key);
        // This should get data and persist the key.
        $this->libraryDiscoveryCollector
            ->get('test');
        $this->libraryDiscoveryCollector
            ->destruct();
    }

}