doctrine / dbal

        self::assertEquals(array(), $c->diffColumn($column1, $column1));

    }

    public function testCompareChangeColumns_MultipleNewColumnsRename()

    {

        $tableA = new Table("foo");

        $tableA->addColumn('datefield1', 'datetime');

        $tableB = new Table("foo");

        $tableB->addColumn('new_datefield1', 'datetime');

        $tableB->addColumn('new_datefield2', 'datetime');

        $c = new Comparator();

        $tableDiff = $c->diffTable($tableA, $tableB);

        self::assertCount(1, $tableDiff->renamedColumns, "we should have one rename datefield1 => new_datefield1.");

        self::assertArrayHasKey('datefield1', $tableDiff->renamedColumns, "'datefield1' should be set to be renamed to new_datefield1");

        self::assertCount(1, $tableDiff->addedColumns, "'new_datefield2' should be added");

        self::assertArrayHasKey('new_datefield2', $tableDiff->addedColumns, "'new_datefield2' should be added, not created through renaming!");

        self::assertCount(0, $tableDiff->removedColumns, "Nothing should be removed.");

        self::assertCount(0, $tableDiff->changedColumns, "Nothing should be changed as all fields old & new have diff names.");

    }

    public function testCompareRemovedIndex()

    {

     *

     * @group DBAL-24

     */

    public function testDetectRenameColumnAmbiguous()

    {

        $tableA = new Table("foo");

        $tableA->addColumn('foo', 'integer');

        $tableA->addColumn('bar', 'integer');

        $tableB = new Table("foo");

        $tableB->addColumn('baz', 'integer');

        $c = new Comparator();

        $tableDiff = $c->diffTable($tableA, $tableB);

        self::assertCount(1, $tableDiff->addedColumns, "'baz' should be added, not created through renaming!");

        self::assertArrayHasKey('baz', $tableDiff->addedColumns, "'baz' should be added, not created through renaming!");

        self::assertCount(2, $tableDiff->removedColumns, "'foo' and 'bar' should both be dropped, an ambiguity exists which one could be renamed to 'baz'.");

        self::assertArrayHasKey('foo', $tableDiff->removedColumns, "'foo' should be removed.");

        self::assertArrayHasKey('bar', $tableDiff->removedColumns, "'bar' should be removed.");

        self::assertCount(0, $tableDiff->renamedColumns, "no renamings should take place.");

    }

    /**

     * @group DBAL-1063