/**
* @depends testDropColumn
*/
public function testDropColumnRemoveIndexDuplicate()
{
$this->_connection->dropColumn($this->_tableName, 'column2');
$this->assertEquals(['column1'], $this->_getIndexColumns($this->_tableName, $this->_oneColumnIdxName), 'Column index must be preserved.');
$this->assertFalse($this->_getIndexColumns($this->_tableName, $this->_twoColumnIdxName), 'Multiple-column index must be dropped to not duplicate existing index by indexed columns.');
}