LibraryDependencyResolverTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\Core\Asset;

use Drupal\Core\Asset\LibraryDependencyResolver;
use Drupal\Tests\UnitTestCase;

/**
 * @coversDefaultClass \Drupal\Core\Asset\LibraryDependencyResolver
 * @group Asset
 */
class LibraryDependencyResolverTest extends UnitTestCase {
    
    /**
     * The tested library dependency resolver.
     *
     * @var \Drupal\Core\Asset\LibraryDependencyResolver
     */
    protected $libraryDependencyResolver;
    
    /**
     * The mocked library discovery service.
     *
     * @var \Drupal\Core\Asset\LibraryDiscoveryInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $libraryDiscovery;
    
    /**
     * The mocked module handler.
     *
     * @var \Drupal\Core\Extension\ModuleHandlerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $moduleHandler;
    
    /**
     * Test library data.
     *
     * @var array
     */
    protected $libraryData = [
        'no_deps_a' => [
            'js' => [],
            'css' => [],
        ],
        'no_deps_b' => [
            'js' => [],
            'css' => [],
        ],
        'no_deps_c' => [
            'js' => [],
            'css' => [],
        ],
        'no_deps_d' => [
            'js' => [],
            'css' => [],
        ],
        'deps_a' => [
            'js' => [],
            'css' => [],
            'dependencies' => [
                'test/no_deps_a',
            ],
        ],
        'deps_b' => [
            'js' => [],
            'css' => [],
            'dependencies' => [
                'test/no_deps_a',
                'test/no_deps_b',
            ],
        ],
        'deps_c' => [
            'js' => [],
            'css' => [],
            'dependencies' => [
                'test/no_deps_b',
                'test/no_deps_a',
            ],
        ],
        'deps_d' => [
            'js' => [],
            'css' => [],
            'dependencies' => [
                'test/no_deps_d',
            ],
        ],
        'nested_deps_a' => [
            'js' => [],
            'css' => [],
            'dependencies' => [
                'test/deps_a',
            ],
        ],
        'nested_deps_b' => [
            'js' => [],
            'css' => [],
            'dependencies' => [
                'test/nested_deps_a',
            ],
        ],
        'nested_deps_c' => [
            'js' => [],
            'css' => [],
            'dependencies' => [
                'test/nested_deps_b',
            ],
        ],
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->libraryDiscovery = $this->getMockBuilder('Drupal\\Core\\Asset\\LibraryDiscovery')
            ->disableOriginalConstructor()
            ->onlyMethods([
            'getLibrariesByExtension',
        ])
            ->getMock();
        $this->libraryDiscovery
            ->expects($this->any())
            ->method('getLibrariesByExtension')
            ->with('test')
            ->willReturn($this->libraryData);
        $this->libraryDependencyResolver = new LibraryDependencyResolver($this->libraryDiscovery);
    }
    
    /**
     * Provides test data for ::testGetLibrariesWithDependencies().
     */
    public static function providerTestGetLibrariesWithDependencies() {
        return [
            // Empty list of libraries.
[
                [],
                [],
            ],
            // Without dependencies.
[
                [
                    'test/no_deps_a',
                ],
                [
                    'test/no_deps_a',
                ],
            ],
            [
                [
                    'test/no_deps_a',
                    'test/no_deps_b',
                ],
                [
                    'test/no_deps_a',
                    'test/no_deps_b',
                ],
            ],
            [
                [
                    'test/no_deps_b',
                    'test/no_deps_a',
                ],
                [
                    'test/no_deps_b',
                    'test/no_deps_a',
                ],
            ],
            // Single-level (direct) dependencies.
[
                [
                    'test/deps_a',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                ],
            ],
            [
                [
                    'test/deps_b',
                ],
                [
                    'test/no_deps_a',
                    'test/no_deps_b',
                    'test/deps_b',
                ],
            ],
            [
                [
                    'test/deps_c',
                ],
                [
                    'test/no_deps_b',
                    'test/no_deps_a',
                    'test/deps_c',
                ],
            ],
            [
                [
                    'test/deps_a',
                    'test/deps_b',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/no_deps_b',
                    'test/deps_b',
                ],
            ],
            [
                [
                    'test/deps_a',
                    'test/deps_c',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/no_deps_b',
                    'test/deps_c',
                ],
            ],
            [
                [
                    'test/deps_a',
                    'test/deps_b',
                    'test/deps_c',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/no_deps_b',
                    'test/deps_b',
                    'test/deps_c',
                ],
            ],
            [
                [
                    'test/deps_b',
                    'test/deps_a',
                ],
                [
                    'test/no_deps_a',
                    'test/no_deps_b',
                    'test/deps_b',
                    'test/deps_a',
                ],
            ],
            [
                [
                    'test/deps_b',
                    'test/deps_c',
                ],
                [
                    'test/no_deps_a',
                    'test/no_deps_b',
                    'test/deps_b',
                    'test/deps_c',
                ],
            ],
            [
                [
                    'test/deps_c',
                    'test/deps_b',
                ],
                [
                    'test/no_deps_b',
                    'test/no_deps_a',
                    'test/deps_c',
                    'test/deps_b',
                ],
            ],
            // Multi-level (indirect) dependencies.
[
                [
                    'test/nested_deps_a',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                ],
            ],
            [
                [
                    'test/nested_deps_c',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                    'test/nested_deps_a',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                ],
            ],
            [
                [
                    'test/nested_deps_a',
                    'test/nested_deps_c',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_c',
                    'test/nested_deps_a',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_a',
                    'test/nested_deps_c',
                    'test/nested_deps_b',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                    'test/nested_deps_a',
                    'test/nested_deps_c',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                    'test/nested_deps_a',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_c',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_c',
                    'test/nested_deps_b',
                    'test/nested_deps_a',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
            ],
            // Complex dependencies, combining the above, with many intersections.
[
                [
                    'test/deps_c',
                    'test/nested_deps_b',
                ],
                [
                    'test/no_deps_b',
                    'test/no_deps_a',
                    'test/deps_c',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                ],
            ],
            [
                [
                    'test/no_deps_a',
                    'test/deps_c',
                    'test/nested_deps_b',
                ],
                [
                    'test/no_deps_a',
                    'test/no_deps_b',
                    'test/deps_c',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                    'test/deps_c',
                    'test/no_deps_c',
                ],
                [
                    'test/no_deps_a',
                    'test/deps_a',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/no_deps_b',
                    'test/deps_c',
                    'test/no_deps_c',
                ],
            ],
        ];
    }
    
    /**
     * @covers ::getLibrariesWithDependencies
     *
     * @dataProvider providerTestGetLibrariesWithDependencies
     */
    public function testGetLibrariesWithDependencies(array $libraries, array $expected) : void {
        $this->assertEquals($expected, $this->libraryDependencyResolver
            ->getLibrariesWithDependencies($libraries));
    }
    
    /**
     * Provides test data for ::testGetMinimalRepresentativeSubset().
     */
    public static function providerTestGetMinimalRepresentativeSubset() {
        return [
            // Empty list of libraries.
[
                [],
                [],
            ],
            // Without dependencies.
[
                [
                    'test/no_deps_a',
                ],
                [
                    'test/no_deps_a',
                ],
            ],
            [
                [
                    'test/no_deps_a',
                    'test/no_deps_b',
                ],
                [
                    'test/no_deps_a',
                    'test/no_deps_b',
                ],
            ],
            [
                [
                    'test/no_deps_b',
                    'test/no_deps_a',
                ],
                [
                    'test/no_deps_b',
                    'test/no_deps_a',
                ],
            ],
            // Single-level (direct) dependencies.
[
                [
                    'test/deps_a',
                ],
                [
                    'test/deps_a',
                ],
            ],
            [
                [
                    'test/deps_b',
                ],
                [
                    'test/deps_b',
                ],
            ],
            [
                [
                    'test/deps_c',
                ],
                [
                    'test/deps_c',
                ],
            ],
            [
                [
                    'test/deps_a',
                    'test/deps_b',
                ],
                [
                    'test/deps_a',
                    'test/deps_b',
                ],
            ],
            [
                [
                    'test/deps_a',
                    'test/deps_c',
                ],
                [
                    'test/deps_a',
                    'test/deps_c',
                ],
            ],
            [
                [
                    'test/deps_a',
                    'test/deps_b',
                    'test/deps_c',
                ],
                [
                    'test/deps_a',
                    'test/deps_b',
                    'test/deps_c',
                ],
            ],
            [
                [
                    'test/deps_b',
                    'test/deps_a',
                ],
                [
                    'test/deps_b',
                    'test/deps_a',
                ],
            ],
            [
                [
                    'test/deps_b',
                    'test/deps_c',
                ],
                [
                    'test/deps_b',
                    'test/deps_c',
                ],
            ],
            [
                [
                    'test/deps_c',
                    'test/deps_b',
                ],
                [
                    'test/deps_c',
                    'test/deps_b',
                ],
            ],
            [
                [
                    'test/deps_a',
                    'test/deps_d',
                    'test/no_deps_a',
                ],
                [
                    'test/deps_a',
                    'test/deps_d',
                ],
            ],
            [
                [
                    'test/deps_a',
                    'test/deps_d',
                    'test/no_deps_d',
                ],
                [
                    'test/deps_a',
                    'test/deps_d',
                ],
            ],
            // Multi-level (indirect) dependencies.
[
                [
                    'test/nested_deps_a',
                ],
                [
                    'test/nested_deps_a',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                ],
                [
                    'test/nested_deps_b',
                ],
            ],
            [
                [
                    'test/nested_deps_c',
                ],
                [
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                ],
                [
                    'test/nested_deps_b',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                    'test/nested_deps_a',
                ],
                [
                    'test/nested_deps_b',
                ],
            ],
            [
                [
                    'test/nested_deps_a',
                    'test/nested_deps_c',
                ],
                [
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
                [
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_c',
                    'test/nested_deps_a',
                ],
                [
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                ],
                [
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_a',
                    'test/nested_deps_c',
                    'test/nested_deps_b',
                ],
                [
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                    'test/nested_deps_a',
                    'test/nested_deps_c',
                ],
                [
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                    'test/nested_deps_c',
                    'test/nested_deps_a',
                ],
                [
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_c',
                    'test/nested_deps_a',
                    'test/nested_deps_b',
                ],
                [
                    'test/nested_deps_c',
                ],
            ],
            [
                [
                    'test/nested_deps_c',
                    'test/nested_deps_b',
                    'test/nested_deps_a',
                ],
                [
                    'test/nested_deps_c',
                ],
            ],
            // Complex dependencies, combining the above, with many intersections.
[
                [
                    'test/deps_c',
                    'test/nested_deps_b',
                ],
                [
                    'test/deps_c',
                    'test/nested_deps_b',
                ],
            ],
            [
                [
                    'test/no_deps_a',
                    'test/deps_c',
                    'test/nested_deps_b',
                ],
                [
                    'test/deps_c',
                    'test/nested_deps_b',
                ],
            ],
            [
                [
                    'test/nested_deps_b',
                    'test/deps_c',
                    'test/no_deps_c',
                ],
                [
                    'test/nested_deps_b',
                    'test/deps_c',
                    'test/no_deps_c',
                ],
            ],
        ];
    }
    
    /**
     * @covers ::getMinimalRepresentativeSubset
     *
     * @dataProvider providerTestGetMinimalRepresentativeSubset
     */
    public function testGetMinimalRepresentativeSubset(array $libraries, array $expected) : void {
        $this->assertEquals($expected, $this->libraryDependencyResolver
            ->getMinimalRepresentativeSubset($libraries));
    }
    
    /**
     * @covers ::getMinimalRepresentativeSubset
     */
    public function testGetMinimalRepresentativeSubsetInvalidInput() : void {
        $this->expectException(\AssertionError::class);
        $this->expectExceptionMessage('$libraries can\'t contain duplicate items.');
        $this->libraryDependencyResolver
            ->getMinimalRepresentativeSubset([
            'test/no_deps_a',
            'test/no_deps_a',
        ]);
    }

}