存根对象正在codeception中调用实方法

Question

我正在尝试使用codeception和他的Mock和Stub库运行测试。发生的事情是，当我试图用存根运行测试时，它引发了一个在我的实际类中实现的错误。

我认为存根是隔离测试和模拟真实对象的方法。为什么它叫我真正的方法？

<?php

class FirstDegreeTest extends \Codeception\TestCase\Test
{
  /**
   * @var \UnitTester
   */
  protected $tester;

  protected function _before()
  {
    $this->max_threads = 30;
    $this->firstDegree = new AlThread\LoadControl\Measurer\FirstDegree($this->max_threads);

    $sensor = Stub::make("AlThread\LoadControl\Sensor\LoadAvg", array("getSystemLoad", Stub::consecutive(0, 1, -3, 1.1, null)));

    $this->firstDegree->setSensor($sensor);
  }

  public function testMeasure()
  {    
    $this->assertEquals(30, $this->firstDegree->measure());
  }
}
?>

所以当我运行代码欺骗（PHPcodeception.phar运行）：

Time: 487 ms, Memory: 11.25Mb

There was 1 error:

---------
1) Test me (FirstDegreeTest::testMeasure)

  [PHPUnit_Framework_Exception] rewind() expects parameter 1 to be resource, null given
                                                                                                 #1  Codeception\Subscriber\ErrorHandler->errorHandler
#2  /home/AlThread/src/LoadControl/Sensor/LoadAVG.php:42
#3  /home/AlThread/src/LoadControl/Sensor/LoadAVG.php:55
#4  /home/AlThread/src/LoadControl/Sensor/LoadAVG.php:49
#5  /home/AlThread/src/LoadControl/Sensor/LoadAVG.php:61
#6  /home/AlThread/src/LoadControl/Sensor/LoadAVG.php:67
#7  /home/AlThread/src/LoadControl/Sensor/LoadSensor.php:10
#8  /home/AlThread/src/LoadControl/Measurer/LoadMeasurer.php:32
#9  /home/AlThread/tests/unit/FirstDegreeTest.php:31
#10 FirstDegreeTest->testMeasure

FAILURES!
Tests: 3, Assertions: 2, Errors: 1.

问题是：

[PHPUnit_Framework_Exception] rewind() expects parameter 1 to be resource, null given

回溯会一直持续到类LoadAVG的真正实现，在这里我真正调用了rewind（）函数，很明显，一旦这个类没有合适的运行环境，就会引发一个错误。

会不会是我想Stubs的方式不对？

非常感谢你。

Answer 1

你给Stu做的参数b::错了应该是个关联数组

$sensor = Stub::make("AlThread\LoadControl\Sensor\LoadAvg", array("getSystemLoad"=>Stub::consecutive(0, 1, -3, 1.1, null)));