unit-testing – 如何模拟CakePHP行为以进行单元测试

与许多类一样,行为是added to the class registry,使用类名作为键,以及后续请求同一对象loaded from the classregistry.因此,模拟行为的方法只是在使用它之前将其放入类注册表中.

完整示例：

<?php
App::uses('AppModel','Model');

class Example extends AppModel {

}
class TESTBehavior extends ModelBehavior {

    public function foo() {
        throw new \Exception('Real method called');
    }
}

class BehaviorExampleTest extends CakeTESTCase {

    /**
     * testNormalBehavior
     *
     * @expectedException Exception
     * @expectedExceptionmessage Real method called
     * @return void
     */
    public function testNormalBehavior() {
        $model = ClassRegistry::init('Example');
        $model->Behaviors->attach('Test');

        $this->asserTinstanceOf('TESTBehavior',$model->Behaviors->Test);
        $this->assertSame('TESTBehavior',get_class($model->Behaviors->Test));
        $this->assertSame(['foo' => ['Test','foo']],$model->Behaviors->methods());

        $model->foo();
    }

    public function testmockedBehavior() {
        $mockedBehavior = $this->getmock('TESTBehavior',['foo','bar']);
        ClassRegistry::addObject('TESTBehavior',$mockedBehavior);

        $model = ClassRegistry::init('Example');
        $model->Behaviors->attach('Test');

        $this->asserTinstanceOf('TESTBehavior',$model->Behaviors->Test);
        $this->assertNotSame('TESTBehavior',get_class($model->Behaviors->Test));

        $expected = [
            'foo' => ['Test','foo'],'bar' => ['Test','bar'],'expects' => ['Test','expects'],// noise,due to being a mock
            'staticExpects' => ['Test','staticExpects'],due to being a mock
        ];
        $this->assertSame($expected,$model->Behaviors->methods());

        $model->foo(); // no exception thrown

        $mockedBehavior
            ->expects($this->once())
            ->method('bar')
            ->will($this->returnValue('something special'));

        $return = $model->bar();
        $this->assertSame('something special',$return);
    }
}