pytest-间谍方法调用因对象
class Work:
pass
class Engineer:
def delegate(work: Work):
print('Doing all the hard work')
class Manager:
def __init__(self, engineer: Engineer):
self.engineer = engineer
def perform(work: Work):
self.engineer.delegate(work)
我想测试Manager的Perrive（）方法。在这样做的过程中，我想验证使用正确的参数调用Engineer.delegate（）方法：
# pseudo
work = mock(Work)
engr = mock(Engineer)
mgr = spy(Manager)
mgr.perform(work)
verify(engr.delegate).times(1).capture(args)
assert args == work
我似乎无法将我的头缠住以上如何用pytest和pytest mock完成上述内容。
class Work:
pass
class Engineer:
def delegate(work: Work):
print('Doing all the hard work')
class Manager:
def __init__(self, engineer: Engineer):
self.engineer = engineer
def perform(work: Work):
self.engineer.delegate(work)
I want to test Manager's perform() method. In doing so I want to verify if engineer.delegate() method was called with the right params:
# pseudo
work = mock(Work)
engr = mock(Engineer)
mgr = spy(Manager)
mgr.perform(work)
verify(engr.delegate).times(1).capture(args)
assert args == work
I can't seem to wrap my head over how the above can be accomplished with pytest and pytest-mock.
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由于您将依赖项注入
Manager类，因此测试是直接的。如您的伪代码中所述，我们只需要为依赖项创建一些模拟，然后我们可以使用间谍验证呼叫数量和参数，函数被调用。一件事要提及的是，在您的
Manager.perform功能定义中，您忘记了包括self作为传递的参数之一。Since you inject your dependencies into your
Managerclass it is straight-forward to test. As noted in your pseudo-code we just need to create some mocks for the dependencies and then we can usespyto verify number of calls and the arguments the functions were called with.One thing to mention, in your
Manager.performfunction definition, you forgot to includeselfas being one of the arguments passed in.