$this->assertEquals('"',$this->_platform->getIdentifierQuoteCharacter(),'Identifier quote character is not correct');
$this->assertEquals('"',$this->_platform->getIdentifierQuoteCharacter(),'Identifier quote character is not correct');
$this->assertEquals('(column1 + column2 + column3)',$this->_platform->getConcatExpression('column1','column2','column3'),'Concatenation expression is not correct');
$this->assertEquals('(column1 + column2 + column3)',$this->_platform->getConcatExpression('column1','column2','column3'),'Concatenation expression is not correct');