如何用phpunit模拟Yii@1.1的CActiveRecord (避免空属性)？

class MyTest extends PHPUnit_Framework_TestCase
{
    public function testSaveWithNonEmptyAttributes()
    {
        // 创建模拟的CActiveRecord对象
        $mock = $this->getMock('CActiveRecord', array('save'));

        // 设置模拟对象的属性
        $mock->setAttribute('attribute1', 'value1');
        $mock->setAttribute('attribute2', 'value2');

        // 设置模拟对象的save()方法返回true
        $mock->expects($this->once())
             ->method('save')
             ->will($this->returnValue(true));

        // 调用模拟对象的save()方法
        $result = $mock->save();

        // 验证保存结果
        $this->assertTrue($result);
        $this->assertEquals('value1', $mock->getAttribute('attribute1'));
        $this->assertEquals('value2', $mock->getAttribute('attribute2'));
    }
}