public function testIsLast() { $this->_model->add($this->_items['item1'], null, 10); $this->_model->add($this->_items['item2'], null, 16); $this->_model->add($this->_items['item3'], null, 15); $this->assertTrue($this->_model->isLast($this->_items['item2'])); $this->assertFalse($this->_model->isLast($this->_items['item3'])); }