class MakeUniqueEntityFieldTest

class MakeUniqueEntityFieldTest extends MigrateProcessTestCase {
    
    /**
     * The mock entity query.
     *
     * @var \Drupal\Core\Entity\Query\QueryInterface
     */
    protected $entityQuery;
    
    /**
     * The mocked entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $entityTypeManager;
    
    /**
     * The migration configuration, initialized to set the ID to test.
     *
     * @var array
     */
    protected $migrationConfiguration = [
        'id' => 'test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        $this->entityQuery = $this->getMockBuilder('Drupal\\Core\\Entity\\Query\\QueryInterface')
            ->disableOriginalConstructor()
            ->getMock();
        $this->entityQuery
            ->expects($this->any())
            ->method('accessCheck')
            ->willReturnSelf();
        $this->entityTypeManager = $this->createMock(EntityTypeManagerInterface::class);
        $storage = $this->createMock(EntityStorageInterface::class);
        $storage->expects($this->any())
            ->method('getQuery')
            ->willReturn($this->entityQuery);
        $this->entityTypeManager
            ->expects($this->any())
            ->method('getStorage')
            ->with('test_entity_type')
            ->willReturn($storage);
        parent::setUp();
    }
    
    /**
     * Tests making an entity field value unique.
     *
     * @dataProvider providerTestMakeUniqueEntityField
     */
    public function testMakeUniqueEntityField($count, $postfix = '', $start = NULL, $length = NULL) : void {
        $configuration = [
            'entity_type' => 'test_entity_type',
            'field' => 'test_field',
        ];
        if ($postfix) {
            $configuration['postfix'] = $postfix;
        }
        $configuration['start'] = $start;
        $configuration['length'] = $length;
        $plugin = new MakeUniqueEntityField($configuration, 'make_unique', [], $this->getMigration(), $this->entityTypeManager);
        $this->entityQueryExpects($count);
        $value = $this->randomMachineName(32);
        $actual = $plugin->transform($value, $this->migrateExecutable, $this->row, 'foo');
        $expected = mb_substr($value, $start ?? 0, $length);
        $expected .= $count ? $postfix . $count : '';
        $this->assertSame($expected, $actual);
    }
    
    /**
     * Tests that invalid start position throws an exception.
     */
    public function testMakeUniqueEntityFieldEntityInvalidStart() : void {
        $configuration = [
            'entity_type' => 'test_entity_type',
            'field' => 'test_field',
            'start' => 'foobar',
        ];
        $plugin = new MakeUniqueEntityField($configuration, 'make_unique', [], $this->getMigration(), $this->entityTypeManager);
        $this->expectException('Drupal\\migrate\\MigrateException');
        $this->expectExceptionMessage('The start position configuration key should be an integer. Omit this key to capture from the beginning of the string.');
        $plugin->transform('test_start', $this->migrateExecutable, $this->row, 'foo');
    }
    
    /**
     * Tests that invalid length option throws an exception.
     */
    public function testMakeUniqueEntityFieldEntityInvalidLength() : void {
        $configuration = [
            'entity_type' => 'test_entity_type',
            'field' => 'test_field',
            'length' => 'foobar',
        ];
        $plugin = new MakeUniqueEntityField($configuration, 'make_unique', [], $this->getMigration(), $this->entityTypeManager);
        $this->expectException('Drupal\\migrate\\MigrateException');
        $this->expectExceptionMessage('The character length configuration key should be an integer. Omit this key to capture the entire string.');
        $plugin->transform('test_length', $this->migrateExecutable, $this->row, 'foo');
    }
    
    /**
     * Data provider for testMakeUniqueEntityField().
     */
    public static function providerTestMakeUniqueEntityField() {
        return [
            // Tests no duplication.
[
                0,
            ],
            // Tests no duplication and start position.
[
                0,
                NULL,
                10,
            ],
            // Tests no duplication, start position, and length.
[
                0,
                NULL,
                5,
                10,
            ],
            // Tests no duplication and length.
[
                0,
                NULL,
                NULL,
                10,
            ],
            // Tests duplication.
[
                3,
            ],
            // Tests duplication and start position.
[
                3,
                NULL,
                10,
            ],
            // Tests duplication, start position, and length.
[
                3,
                NULL,
                5,
                10,
            ],
            // Tests duplication and length.
[
                3,
                NULL,
                NULL,
                10,
            ],
            // Tests no duplication and postfix.
[
                0,
                '_',
            ],
            // Tests no duplication, postfix, and start position.
[
                0,
                '_',
                5,
            ],
            // Tests no duplication, postfix, start position, and length.
[
                0,
                '_',
                5,
                10,
            ],
            // Tests no duplication, postfix, and length.
[
                0,
                '_',
                NULL,
                10,
            ],
            // Tests duplication and postfix.
[
                2,
                '_',
            ],
            // Tests duplication, postfix, and start position.
[
                2,
                '_',
                5,
            ],
            // Tests duplication, postfix, start position, and length.
[
                2,
                '_',
                5,
                10,
            ],
            // Tests duplication, postfix, and length.
[
                2,
                '_',
                NULL,
                10,
            ],
        ];
    }
    
    /**
     * Helper function to add expectations to the mock entity query object.
     *
     * @param int $count
     *   The number of unique values to be set up.
     */
    protected function entityQueryExpects($count) {
        $this->entityQuery
            ->expects($this->exactly($count + 1))
            ->method('condition')
            ->willReturn($this->entityQuery);
        $this->entityQuery
            ->expects($this->exactly($count + 1))
            ->method('count')
            ->willReturn($this->entityQuery);
        $this->entityQuery
            ->expects($this->exactly($count + 1))
            ->method('execute')
            ->willReturnCallback(function () use (&$count) {
            return $count--;
        });
    }
    
    /**
     * Tests making an entity field value unique only for migrated entities.
     */
    public function testMakeUniqueEntityFieldMigrated() : void {
        $configuration = [
            'entity_type' => 'test_entity_type',
            'field' => 'test_field',
            'migrated' => TRUE,
        ];
        $plugin = new MakeUniqueEntityField($configuration, 'make_unique', [], $this->getMigration(), $this->entityTypeManager);
        // Setup the entityQuery used in MakeUniqueEntityFieldEntity::exists. The
        // map, $map, is an array consisting of the four input parameters to the
        // query condition method and then the query to return. Both 'forum' and
        // 'test_vocab' are existing entities. There is no 'test_vocab1'.
        $map = [];
        foreach ([
            'forums',
            'test_vocab',
            'test_vocab1',
        ] as $id) {
            $query = $this->prophesize(QueryInterface::class);
            $query->willBeConstructedWith([]);
            $query->accessCheck()
                ->willReturn($query);
            $query->execute()
                ->willReturn($id === 'test_vocab1' ? [] : [
                $id,
            ]);
            $map[] = [
                'test_field',
                $id,
                NULL,
                NULL,
                $query->reveal(),
            ];
        }
        $this->entityQuery
            ->method('condition')
            ->willReturnMap($map);
        // Entity 'forums' is pre-existing, entity 'test_vocab' was migrated.
        $this->idMap
            ->method('lookupSourceId')
            ->willReturnMap([
            [
                [
                    'test_field' => 'forums',
                ],
                FALSE,
            ],
            [
                [
                    'test_field' => 'test_vocab',
                ],
                [
                    'source_id' => 42,
                ],
            ],
        ]);
        // Existing entity 'forums' was not migrated, value should not be unique.
        $actual = $plugin->transform('forums', $this->migrateExecutable, $this->row, 'foo');
        $this->assertEquals('forums', $actual, 'Pre-existing name is re-used');
        // Entity 'test_vocab' was migrated, value should be unique.
        $actual = $plugin->transform('test_vocab', $this->migrateExecutable, $this->row, 'foo');
        $this->assertEquals('test_vocab1', $actual, 'Migrated name is deduplicated');
    }

}