测试是否与其他模拟一起调用了模拟

Question

我正在尝试测试是否用另一个模拟对象调用了一个模拟对象。

@patch(__name__ + '.xero_helper.PublicCredentials')
@patch(__name__ + '.xero_helper.Xero')
def testGetValidPublicXeroInstance(self, XeroMock, CredentialsMock):
    xero_helper.get_xero_instance('abc')  # Do relevant stuff
    CredentialsMock.assert_called_with(**org.oauth_credentials)  # OK
    XeroMock.assert_called_once()  # OK
    XeroMock.assert_called_with(CredentialsMock)  # Not OK

前两个assert通过，而最后一个给出

AssertionError: Expected call: Xero(<MagicMock name='PublicCredentials' id='4377636560'>)
Actual call: Xero(<MagicMock name='PublicCredentials()' id='4377382544'>)

验证XeroMock被CredentialsMock调用的正确方法是什么？

Answer 1

您的代码调用了 CredentialsMock 模拟对象，大概是为了创建一个实例。请注意结果名称中的()：

<MagicMock name='PublicCredentials()' id='4377382544'>
#                                 ^^ called

当你只传入模拟本身时：

<MagicMock name='PublicCredentials' id='4377636560'>
#                                ^ not called

测试return_value结果：

XeroMock.assert_called_with(CredentialsMock.return_value)