public function testAddExplicitConditionWithOperator()
{
$j = new Join();
$j->addExplicitCondition('a', 'foo', null, 'b', 'bar', null, '>=');
$this->assertEquals('>=', $j->getOperator());
$this->assertEquals('a.foo', $j->getLeftColumn());
$this->assertEquals('b.bar', $j->getRightColumn());
}