我一直试图在另一个函数中模拟这个函数调用但没有成功。我如何成功嘲笑这个?
from mock import patch
from path.to.a import function_a
@patch("class_b.function_c")
def test_method(self, method_to_mock):
method_to_mock.return_value = 7890
result = function_a() #error - type object 'class_b' has no attribute 'function_c'
#another module -- "path.to.a module"
def function_a():
return class_b.function_c()
#another module
class class_b(class_c):
pass
#another module
class class_c():
@classmethod
def function_c():
return 123
答案 0 :(得分:1)
您的代码存在两个问题:
1)未正确声明类方法
class class_c():
@classmethod
def function_c(cls):
return 123
2)@patch使用不正确。您需要将其更改为
def mock_method(cls):
return 7890
# asssume the module name of class_b is modb
@patch("modb.class_b.function_c", new=classmethod(mock_method))
def test_method():
result = function_a()
print result # check the result