class StorageComparerTest

class StorageComparerTest extends UnitTestCase {
    
    /**
     * @var \Drupal\Core\Config\StorageInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $sourceStorage;
    
    /**
     * @var \Drupal\Core\Config\StorageInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $targetStorage;
    
    /**
     * The storage comparer to test.
     *
     * @var \Drupal\Core\Config\StorageComparer
     */
    protected $storageComparer;
    
    /**
     * An array of test configuration data keyed by configuration name.
     *
     * @var array
     */
    protected $configData;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->sourceStorage = $this->createMock('Drupal\\Core\\Config\\StorageInterface');
        $this->targetStorage = $this->createMock('Drupal\\Core\\Config\\StorageInterface');
        $this->sourceStorage
            ->expects($this->atLeastOnce())
            ->method('getCollectionName')
            ->willReturn(StorageInterface::DEFAULT_COLLECTION);
        $this->targetStorage
            ->expects($this->atLeastOnce())
            ->method('getCollectionName')
            ->willReturn(StorageInterface::DEFAULT_COLLECTION);
        $this->storageComparer = new StorageComparer($this->sourceStorage, $this->targetStorage);
    }
    protected function getConfigData() {
        $uuid = new Php();
        // Mock data using minimal data to use ConfigDependencyManger.
        $this->configData = [
            // Simple config that controls configuration sync.
'system.site' => [
                'title' => 'Drupal',
                'uuid' => $uuid->generate(),
            ],
            // Config entity which requires another config entity.
'field.field.node.article.body' => [
                'id' => 'node.article.body',
                'uuid' => $uuid->generate(),
                'dependencies' => [
                    'config' => [
                        'field.storage.node.body',
                    ],
                ],
            ],
            // Config entity which is required by another config entity.
'field.storage.node.body' => [
                'id' => 'node.body',
                'uuid' => $uuid->generate(),
                'dependencies' => [
                    'module' => [
                        'text',
                    ],
                ],
            ],
            // Config entity not which has no dependencies on configuration.
'views.view.test_view' => [
                'id' => 'test_view',
                'uuid' => $uuid->generate(),
                'dependencies' => [
                    'module' => [
                        'node',
                    ],
                ],
            ],
            // Simple config.
'system.logging' => [
                'error_level' => 'hide',
            ],
        ];
        return $this->configData;
    }
    
    /**
     * @covers ::createChangelist
     */
    public function testCreateChangelistNoChange() : void {
        $config_data = $this->getConfigData();
        $config_files = array_keys($config_data);
        $this->sourceStorage
            ->expects($this->once())
            ->method('listAll')
            ->willReturn($config_files);
        $this->targetStorage
            ->expects($this->once())
            ->method('listAll')
            ->willReturn($config_files);
        $this->sourceStorage
            ->expects($this->once())
            ->method('readMultiple')
            ->willReturn($config_data);
        $this->targetStorage
            ->expects($this->once())
            ->method('readMultiple')
            ->willReturn($config_data);
        $this->sourceStorage
            ->expects($this->once())
            ->method('getAllCollectionNames')
            ->willReturn([]);
        $this->targetStorage
            ->expects($this->once())
            ->method('getAllCollectionNames')
            ->willReturn([]);
        $this->storageComparer
            ->createChangelist();
        $this->assertEmpty($this->storageComparer
            ->getChangelist('create'));
        $this->assertEmpty($this->storageComparer
            ->getChangelist('delete'));
        $this->assertEmpty($this->storageComparer
            ->getChangelist('update'));
    }
    
    /**
     * @covers ::createChangelist
     */
    public function testCreateChangelistCreate() : void {
        $target_data = $source_data = $this->getConfigData();
        unset($target_data['field.storage.node.body']);
        unset($target_data['field.field.node.article.body']);
        unset($target_data['views.view.test_view']);
        $this->sourceStorage
            ->expects($this->once())
            ->method('listAll')
            ->willReturn(array_keys($source_data));
        $this->targetStorage
            ->expects($this->once())
            ->method('listAll')
            ->willReturn(array_keys($target_data));
        $this->sourceStorage
            ->expects($this->once())
            ->method('readMultiple')
            ->willReturn($source_data);
        $this->targetStorage
            ->expects($this->once())
            ->method('readMultiple')
            ->willReturn($target_data);
        $this->sourceStorage
            ->expects($this->once())
            ->method('getAllCollectionNames')
            ->willReturn([]);
        $this->targetStorage
            ->expects($this->once())
            ->method('getAllCollectionNames')
            ->willReturn([]);
        $this->storageComparer
            ->createChangelist();
        $expected = [
            'field.storage.node.body',
            'field.field.node.article.body',
            'views.view.test_view',
        ];
        $this->assertEquals($expected, $this->storageComparer
            ->getChangelist('create'));
        $this->assertEmpty($this->storageComparer
            ->getChangelist('delete'));
        $this->assertEmpty($this->storageComparer
            ->getChangelist('update'));
    }
    
    /**
     * @covers ::createChangelist
     */
    public function testCreateChangelistDelete() : void {
        $target_data = $source_data = $this->getConfigData();
        unset($source_data['field.storage.node.body']);
        unset($source_data['field.field.node.article.body']);
        unset($source_data['views.view.test_view']);
        $this->sourceStorage
            ->expects($this->once())
            ->method('listAll')
            ->willReturn(array_keys($source_data));
        $this->targetStorage
            ->expects($this->once())
            ->method('listAll')
            ->willReturn(array_keys($target_data));
        $this->sourceStorage
            ->expects($this->once())
            ->method('readMultiple')
            ->willReturn($source_data);
        $this->targetStorage
            ->expects($this->once())
            ->method('readMultiple')
            ->willReturn($target_data);
        $this->sourceStorage
            ->expects($this->once())
            ->method('getAllCollectionNames')
            ->willReturn([]);
        $this->targetStorage
            ->expects($this->once())
            ->method('getAllCollectionNames')
            ->willReturn([]);
        $this->storageComparer
            ->createChangelist();
        $expected = [
            'views.view.test_view',
            'field.field.node.article.body',
            'field.storage.node.body',
        ];
        $this->assertEquals($expected, $this->storageComparer
            ->getChangelist('delete'));
        $this->assertEmpty($this->storageComparer
            ->getChangelist('create'));
        $this->assertEmpty($this->storageComparer
            ->getChangelist('update'));
    }
    
    /**
     * @covers ::createChangelist
     */
    public function testCreateChangelistUpdate() : void {
        $target_data = $source_data = $this->getConfigData();
        $source_data['system.site']['title'] = 'Drupal New!';
        $source_data['field.field.node.article.body']['new_config_key'] = 'new data';
        $source_data['field.storage.node.body']['new_config_key'] = 'new data';
        $this->sourceStorage
            ->expects($this->once())
            ->method('listAll')
            ->willReturn(array_keys($source_data));
        $this->targetStorage
            ->expects($this->once())
            ->method('listAll')
            ->willReturn(array_keys($target_data));
        $this->sourceStorage
            ->expects($this->once())
            ->method('readMultiple')
            ->willReturn($source_data);
        $this->targetStorage
            ->expects($this->once())
            ->method('readMultiple')
            ->willReturn($target_data);
        $this->sourceStorage
            ->expects($this->once())
            ->method('getAllCollectionNames')
            ->willReturn([]);
        $this->targetStorage
            ->expects($this->once())
            ->method('getAllCollectionNames')
            ->willReturn([]);
        $this->storageComparer
            ->createChangelist();
        $expected = [
            'field.storage.node.body',
            'field.field.node.article.body',
            'system.site',
        ];
        $this->assertEquals($expected, $this->storageComparer
            ->getChangelist('update'));
        $this->assertEmpty($this->storageComparer
            ->getChangelist('create'));
        $this->assertEmpty($this->storageComparer
            ->getChangelist('delete'));
    }
    
    /**
     * @covers ::createChangelist
     */
    public function testDifferentCollections() : void {
        $source = new MemoryStorage();
        $target = new MemoryStorage();
        $this->generateRandomData($source, 's');
        $this->generateRandomData($target, 't');
        // Use random collections for source and target.
        $collections = $source->getAllCollectionNames();
        $source = $source->createCollection($collections[array_rand($collections)]);
        $collections = $target->getAllCollectionNames();
        $target = $target->createCollection($collections[array_rand($collections)]);
        $comparer = new StorageComparer($source, $target);
        $comparer->createChangelist();
        foreach (array_merge([
            StorageInterface::DEFAULT_COLLECTION,
        ], $source->getAllCollectionNames(), $target->getAllCollectionNames()) as $collection) {
            $expected = [
                'create' => $source->createCollection($collection)
                    ->listAll(),
                'update' => [],
                'delete' => $target->createCollection($collection)
                    ->listAll(),
                'rename' => [],
            ];
            $this->assertEqualsCanonicalizing($expected, $comparer->getChangelist(NULL, $collection));
        }
    }
    
    /**
     * Generate random data in a config storage.
     *
     * @param \Drupal\Core\Config\StorageInterface $storage
     *   The storage to populate with random data.
     * @param string $prefix
     *   The prefix for random names to make sure they are unique.
     */
    protected function generateRandomData(StorageInterface $storage, string $prefix = '') : void {
        $generator = $this->getRandomGenerator();
        for ($i = 0; $i < rand(2, 10); $i++) {
            $storage->write($prefix . $this->randomMachineName(), (array) $generator->object());
        }
        for ($i = 0; $i < rand(1, 5); $i++) {
            $collection = $storage->createCollection($prefix . $this->randomMachineName());
            for ($i = 0; $i < rand(2, 10); $i++) {
                $collection->write($prefix . $this->randomMachineName(), (array) $generator->object());
            }
        }
    }

}