class MigrateSourceTest

class MigrateSourceTest extends MigrateTestCase {
    
    /**
     * Override the migration config.
     *
     * @var array
     */
    protected $defaultMigrationConfiguration = [
        'id' => 'test_migration',
        'source' => [],
    ];
    
    /**
     * Test row data.
     *
     * @var array
     */
    protected $row = [
        'test_sourceid1' => '1',
        'timestamp' => 500,
    ];
    
    /**
     * Test source ids.
     *
     * @var array
     */
    protected $sourceIds = [
        'test_sourceid1' => 'test_sourceid1',
    ];
    
    /**
     * The migration entity.
     *
     * @var \Drupal\migrate\Plugin\MigrationInterface
     */
    protected $migration;
    
    /**
     * The migrate executable.
     *
     * @var \Drupal\migrate\MigrateExecutable
     */
    protected $executable;
    
    /**
     * Gets the source plugin to test.
     *
     * @param array $configuration
     *   (optional) The source configuration. Defaults to an empty array.
     * @param array $migrate_config
     *   (optional) The migration configuration to be used in
     *   parent::getMigration(). Defaults to an empty array.
     * @param int $status
     *   (optional) The default status for the new rows to be imported. Defaults
     *   to MigrateIdMapInterface::STATUS_NEEDS_UPDATE.
     * @param int $high_water_value
     *   (optional) The high water mark to start from, if set.
     *
     * @return \Drupal\migrate\Plugin\MigrateSourceInterface
     *   A mocked source plugin.
     */
    protected function getSource($configuration = [], $migrate_config = [], $status = MigrateIdMapInterface::STATUS_NEEDS_UPDATE, $high_water_value = NULL) {
        $container = new ContainerBuilder();
        \Drupal::setContainer($container);
        $key_value = $this->createMock(KeyValueStoreInterface::class);
        $key_value_factory = $this->createMock(KeyValueFactoryInterface::class);
        $key_value_factory->method('get')
            ->with('migrate:high_water')
            ->willReturn($key_value);
        $container->set('keyvalue', $key_value_factory);
        $container->set('cache.migrate', $this->createMock(CacheBackendInterface::class));
        $this->migrationConfiguration = $this->defaultMigrationConfiguration + $migrate_config;
        $this->migration = parent::getMigration();
        $this->executable = $this->getMigrateExecutable($this->migration);
        // Update the idMap for Source so the default is that the row has already
        // been imported. This allows us to use the highwater mark to decide on the
        // outcome of whether we choose to import the row.
        $id_map_array = [
            'original_hash' => '',
            'hash' => '',
            'source_row_status' => $status,
        ];
        $this->idMap
            ->expects($this->any())
            ->method('getRowBySource')
            ->willReturn($id_map_array);
        $constructor_args = [
            $configuration,
            'd6_action',
            [],
            $this->migration,
        ];
        $methods = [
            'getModuleHandler',
            'fields',
            'getIds',
            '__toString',
            'prepareRow',
            'initializeIterator',
        ];
        $source_plugin = $this->getMockBuilder(SourcePluginBase::class)
            ->onlyMethods($methods)
            ->setConstructorArgs($constructor_args)
            ->getMock();
        $source_plugin->method('fields')
            ->willReturn([]);
        $source_plugin->method('getIds')
            ->willReturn([]);
        $source_plugin->method('__toString')
            ->willReturn('');
        $source_plugin->method('prepareRow')
            ->willReturn(empty($migrate_config['prepare_row_false']));
        $rows = [
            $this->row,
        ];
        if (isset($configuration['high_water_property']) && isset($high_water_value)) {
            $property = $configuration['high_water_property']['name'];
            $rows = array_filter($rows, function (array $row) use ($property, $high_water_value) {
                return $row[$property] >= $high_water_value;
            });
        }
        $iterator = new \ArrayIterator($rows);
        $source_plugin->method('initializeIterator')
            ->willReturn($iterator);
        $module_handler = $this->createMock(ModuleHandlerInterface::class);
        $source_plugin->method('getModuleHandler')
            ->willReturn($module_handler);
        $this->migration
            ->method('getSourcePlugin')
            ->willReturn($source_plugin);
        return $source_plugin;
    }
    
    /**
     * @covers ::__construct
     */
    public function testHighwaterTrackChangesIncompatible() : void {
        $source_config = [
            'track_changes' => TRUE,
            'high_water_property' => [
                'name' => 'something',
            ],
        ];
        $this->expectException(MigrateException::class);
        $this->getSource($source_config);
    }
    
    /**
     * Tests that the source count is correct.
     *
     * @covers ::count
     */
    public function testCount() : void {
        // Mock the cache to validate set() receives appropriate arguments.
        $container = new ContainerBuilder();
        $cache = $this->createMock(CacheBackendInterface::class);
        $cache->expects($this->any())
            ->method('set')
            ->with($this->isType('string'), $this->isType('int'), $this->isType('int'));
        $container->set('cache.migrate', $cache);
        \Drupal::setContainer($container);
        // Test that the basic count works.
        $source = $this->getSource();
        $this->assertEquals(1, $source->count());
        // Test caching the count works.
        $source = $this->getSource([
            'cache_counts' => TRUE,
        ]);
        $this->assertEquals(1, $source->count());
        // Test the skip argument.
        $source = $this->getSource([
            'skip_count' => TRUE,
        ]);
        $this->assertEquals(MigrateSourceInterface::NOT_COUNTABLE, $source->count());
        $this->migrationConfiguration['id'] = 'test_migration';
        $migration = $this->getMigration();
        $source = new StubSourceGeneratorPlugin([], '', [], $migration);
        // Test the skipCount property's default value.
        $this->assertEquals(MigrateSourceInterface::NOT_COUNTABLE, $source->count());
        // Test the count value using a generator.
        $source = new StubSourceGeneratorPlugin([
            'skip_count' => FALSE,
        ], '', [], $migration);
        $this->assertEquals(3, $source->count());
    }
    
    /**
     * Tests that the key can be set for the count cache.
     *
     * @covers ::count
     */
    public function testCountCacheKey() : void {
        // Mock the cache to validate set() receives appropriate arguments.
        $container = new ContainerBuilder();
        $cache = $this->createMock(CacheBackendInterface::class);
        $cache->expects($this->any())
            ->method('set')
            ->with('test_key', $this->isType('int'), $this->isType('int'));
        $container->set('cache.migrate', $cache);
        \Drupal::setContainer($container);
        // Test caching the count with a configured key works.
        $source = $this->getSource([
            'cache_counts' => TRUE,
            'cache_key' => 'test_key',
        ]);
        $this->assertEquals(1, $source->count());
    }
    
    /**
     * Tests that we don't get a row if prepareRow() is false.
     */
    public function testPrepareRowFalse() : void {
        $source = $this->getSource([], [
            'prepare_row_false' => TRUE,
        ]);
        $source->rewind();
        $this->assertNull($source->current(), 'No row is available when prepareRow() is false.');
    }
    
    /**
     * Tests that $row->needsUpdate() works as expected.
     */
    public function testNextNeedsUpdate() : void {
        $source = $this->getSource();
        // $row->needsUpdate() === TRUE so we get a row.
        $source->rewind();
        $this->assertTrue(is_a($source->current(), 'Drupal\\migrate\\Row'), '$row->needsUpdate() is TRUE so we got a row.');
        // Test that we don't get a row when the incoming row is marked as imported.
        $source = $this->getSource([], [], MigrateIdMapInterface::STATUS_IMPORTED);
        $source->rewind();
        $this->assertNull($source->current(), 'Row was already imported, should be NULL');
    }
    
    /**
     * Tests that an outdated highwater mark does not cause a row to be imported.
     */
    public function testOutdatedHighwater() : void {
        $configuration = [
            'high_water_property' => [
                'name' => 'timestamp',
            ],
        ];
        $source = $this->getSource($configuration, [], MigrateIdMapInterface::STATUS_IMPORTED, $this->row['timestamp'] + 1);
        // The current highwater mark is now higher than the row timestamp so no row
        // is expected.
        $source->rewind();
        $this->assertNull($source->current(), 'Original highwater mark is higher than incoming row timestamp.');
    }
    
    /**
     * Tests that a highwater mark newer than our saved one imports a row.
     *
     * @throws \Exception
     */
    public function testNewHighwater() : void {
        $configuration = [
            'high_water_property' => [
                'name' => 'timestamp',
            ],
        ];
        // Set a highwater property field for source. Now we should have a row
        // because the row timestamp is greater than the current highwater mark.
        $source = $this->getSource($configuration, [], MigrateIdMapInterface::STATUS_IMPORTED, $this->row['timestamp'] - 1);
        $source->rewind();
        $this->assertInstanceOf(Row::class, $source->current());
    }
    
    /**
     * Tests basic row preparation.
     *
     * @covers ::prepareRow
     */
    public function testPrepareRow() : void {
        $this->migrationConfiguration['id'] = 'test_migration';
        // Get a new migration with an id.
        $migration = $this->getMigration();
        $source = new StubSourcePlugin([], '', [], $migration);
        $row = new Row();
        $module_handler = $this->prophesize(ModuleHandlerInterface::class);
        $module_handler->invokeAll('migrate_prepare_row', [
            $row,
            $source,
            $migration,
        ])
            ->willReturn([
            TRUE,
            TRUE,
        ])
            ->shouldBeCalled();
        $module_handler->invokeAll('migrate_' . $migration->id() . '_prepare_row', [
            $row,
            $source,
            $migration,
        ])
            ->willReturn([
            TRUE,
            TRUE,
        ])
            ->shouldBeCalled();
        $source->setModuleHandler($module_handler->reveal());
        // Ensure we don't log this to the mapping table.
        $this->idMap
            ->expects($this->never())
            ->method('saveIdMapping');
        $this->assertTrue($source->prepareRow($row));
        // Track_changes...
        $source = new StubSourcePlugin([
            'track_changes' => TRUE,
        ], '', [], $migration);
        $row2 = $this->prophesize(Row::class);
        $row2->rehash()
            ->shouldBeCalled();
        $module_handler->invokeAll('migrate_prepare_row', [
            $row2,
            $source,
            $migration,
        ])
            ->willReturn([
            TRUE,
            TRUE,
        ])
            ->shouldBeCalled();
        $module_handler->invokeAll('migrate_' . $migration->id() . '_prepare_row', [
            $row2,
            $source,
            $migration,
        ])
            ->willReturn([
            TRUE,
            TRUE,
        ])
            ->shouldBeCalled();
        $source->setModuleHandler($module_handler->reveal());
        $this->assertTrue($source->prepareRow($row2->reveal()));
    }
    
    /**
     * Tests that global prepare hooks can skip rows.
     *
     * @covers ::prepareRow
     */
    public function testPrepareRowGlobalPrepareSkip() : void {
        $this->migrationConfiguration['id'] = 'test_migration';
        $migration = $this->getMigration();
        $source = new StubSourcePlugin([], '', [], $migration);
        $row = new Row();
        $module_handler = $this->prophesize(ModuleHandlerInterface::class);
        // Return a failure from a prepare row hook.
        $module_handler->invokeAll('migrate_prepare_row', [
            $row,
            $source,
            $migration,
        ])
            ->willReturn([
            TRUE,
            FALSE,
            TRUE,
        ])
            ->shouldBeCalled();
        $module_handler->invokeAll('migrate_' . $migration->id() . '_prepare_row', [
            $row,
            $source,
            $migration,
        ])
            ->willReturn([
            TRUE,
            TRUE,
        ])
            ->shouldBeCalled();
        $source->setModuleHandler($module_handler->reveal());
        $this->idMap
            ->expects($this->once())
            ->method('saveIdMapping')
            ->with($row, [], MigrateIdMapInterface::STATUS_IGNORED);
        $this->assertFalse($source->prepareRow($row));
    }
    
    /**
     * Tests that migrate specific prepare hooks can skip rows.
     *
     * @covers ::prepareRow
     */
    public function testPrepareRowMigratePrepareSkip() : void {
        $this->migrationConfiguration['id'] = 'test_migration';
        $migration = $this->getMigration();
        $source = new StubSourcePlugin([], '', [], $migration);
        $row = new Row();
        $module_handler = $this->prophesize(ModuleHandlerInterface::class);
        // Return a failure from a prepare row hook.
        $module_handler->invokeAll('migrate_prepare_row', [
            $row,
            $source,
            $migration,
        ])
            ->willReturn([
            TRUE,
            TRUE,
        ])
            ->shouldBeCalled();
        $module_handler->invokeAll('migrate_' . $migration->id() . '_prepare_row', [
            $row,
            $source,
            $migration,
        ])
            ->willReturn([
            TRUE,
            FALSE,
            TRUE,
        ])
            ->shouldBeCalled();
        $source->setModuleHandler($module_handler->reveal());
        $this->idMap
            ->expects($this->once())
            ->method('saveIdMapping')
            ->with($row, [], MigrateIdMapInterface::STATUS_IGNORED);
        $this->assertFalse($source->prepareRow($row));
    }
    
    /**
     * Tests that a skip exception during prepare hooks correctly skips.
     *
     * @covers ::prepareRow
     */
    public function testPrepareRowPrepareException() : void {
        $this->migrationConfiguration['id'] = 'test_migration';
        $migration = $this->getMigration();
        $source = new StubSourcePlugin([], '', [], $migration);
        $row = new Row();
        $module_handler = $this->prophesize(ModuleHandlerInterface::class);
        // Return a failure from a prepare row hook.
        $module_handler->invokeAll('migrate_prepare_row', [
            $row,
            $source,
            $migration,
        ])
            ->willReturn([
            TRUE,
            TRUE,
        ])
            ->shouldBeCalled();
        $module_handler->invokeAll('migrate_' . $migration->id() . '_prepare_row', [
            $row,
            $source,
            $migration,
        ])
            ->willThrow(new MigrateSkipRowException())
            ->shouldBeCalled();
        $source->setModuleHandler($module_handler->reveal());
        // This will only be called on the first prepare because the second
        // explicitly avoids it.
        $this->idMap
            ->expects($this->once())
            ->method('saveIdMapping')
            ->with($row, [], MigrateIdMapInterface::STATUS_IGNORED);
        $this->assertFalse($source->prepareRow($row));
        // Throw an exception the second time that avoids mapping.
        $e = new MigrateSkipRowException('', FALSE);
        $module_handler->invokeAll('migrate_' . $migration->id() . '_prepare_row', [
            $row,
            $source,
            $migration,
        ])
            ->willThrow($e)
            ->shouldBeCalled();
        $this->assertFalse($source->prepareRow($row));
    }
    
    /**
     * Tests that default values are preserved for several source methods.
     */
    public function testDefaultPropertiesValues() : void {
        $this->migrationConfiguration['id'] = 'test_migration';
        $migration = $this->getMigration();
        $source = new StubSourceGeneratorPlugin([], '', [], $migration);
        // Test the default value of the skipCount Value;
        $this->assertTrue($source->getSkipCount());
        $this->assertTrue($source->getCacheCounts());
        $this->assertTrue($source->getTrackChanges());
    }
    
    /**
     * Gets a mock executable for the test.
     *
     * @param \Drupal\migrate\Plugin\MigrationInterface $migration
     *   The migration entity.
     *
     * @return \Drupal\migrate\MigrateExecutable
     *   The migrate executable.
     */
    protected function getMigrateExecutable($migration) {
        
        /** @var \Drupal\migrate\MigrateMessageInterface $message */
        $message = $this->createMock('Drupal\\migrate\\MigrateMessageInterface');
        
        /** @var \Symfony\Contracts\EventDispatcher\EventDispatcherInterface $event_dispatcher */
        $event_dispatcher = $this->createMock('Symfony\\Contracts\\EventDispatcher\\EventDispatcherInterface');
        return new MigrateExecutable($migration, $message, $event_dispatcher);
    }

}