PHPUnit:如何测试方法的调用顺序是否不正确 - PHPUnit: how to test that methods are called in incorrect order?

PHPUnit: how to test that methods are called in incorrect order?

我想使用PHPUnit来测试方法是否按正确的顺序被调用。

我的第一次尝试，在模拟对象上使用->at()，没有工作。例如，我预计下面的语句会失败，但它没有:

  public function test_at_constraint()
  {
    $x = $this->getMock('FirstSecond', array('first', 'second'));
    $x->expects($this->at(0))->method('first');
    $x->expects($this->at(1))->method('second');
    $x->second();
    $x->first();
  }

如果按错误的顺序调用，我能想到的强制失败的唯一方法是这样的:

  public function test_at_constraint_with_exception()
  { 
    $x = $this->getMock('FirstSecond', array('first', 'second'));
    $x->expects($this->at(0))->method('first');
    $x->expects($this->at(1))->method('first')
      ->will($this->throwException(new Exception("called at wrong index")));
    $x->expects($this->at(1))->method('second');
    $x->expects($this->at(0))->method('second')
      ->will($this->throwException(new Exception("called at wrong index")));
    $x->second();
    $x->first();
  }

是否有更优雅的方法来做到这一点?谢谢!

您需要涉及任何InvocationMocker来实现您的期望。例如:

public function test_at_constraint()
{
    $x = $this->getMock('FirstSecond', array('first', 'second'));
    $x->expects($this->at(0))->method('first')->with();
    $x->expects($this->at(1))->method('second')->with();
    $x->second();
    $x->first();
}