public function testGetIdxName()
 {
     $table = 'table';
     $calculatedTableName = self::TABLE_PREFIX . 'table';
     $fields = ['field'];
     $indexType = 'index_type';
     $expectedIdxName = 'idxName';
     $this->connection->expects($this->once())->method('getIndexName')->with($calculatedTableName, $fields, $indexType)->will($this->returnValue($expectedIdxName));
     $this->connectionFactory->expects($this->once())->method('create')->will($this->returnValue($this->connection));
     $this->assertEquals('idxName', $this->resource->getIdxName($table, $fields, $indexType));
 }