public function testOrderColumns() { $this->engine->orderColumns('id'); $this->assertEquals(array('id'), $this->engine->getOrderingColumns()); $this->engine->orderColumns('name', 'email'); $this->assertEquals(array('name', 'email'), $this->engine->getOrderingColumns()); $this->engine->orderColumns(array('foo', 'bar')); $this->assertEquals(array('foo', 'bar'), $this->engine->getOrderingColumns()); }