使用Mockito | Android对调用私有回调的方法进行单元测试
[英]Unit test a method with a call to a private callback using Mockito|Android
问题描述
I am trying to unit test the following method in Android: 
我正在尝试对Android中的以下方法进行单元测试：
@Override
public void onTryAgain() {
mView.showLoading();
mGetLoginSsoUseCase.execute(
getLoginSsoLink(),
new GetSsoLinkUseCase.Params(mUrl));
}
In which getLoginSsoLink() returns a callback object: 在其中getLoginSsoLink（）返回一个回调对象：
private ICallback<GetLoginSsoLinkResult> getLoginSsoLink() {
return new ICallback<GetLoginSsoLinkResult>() {
@Override
public void onResult(GetLoginSsoLinkResult result) {
// some code
}
@Override
public void onKoError(KOException exception) {
// some code
}
@Override
public void onConnectivityError(ConnectivityException exception) {
// some code
}
@Override
public void onGenericError(Exception exception) {
// some code
}
};
}
My unit test using Mockito is like that: 我使用Mockito进行的单元测试如下：
@Test
public void WhenCallOnTryAgain_ThenShowLoadingIsCalledInView(){
doNothing().when(mGetSsoLinkUseCase).execute(
FAKE_GET_LOGIN_SSO_LINK_RESULT_CALLBACK,
FAKE_GET_SSO_LINK_USE_CASE_PARAMS);
mPresenter.onTryAgain();
verify(mGetSsoLinkUseCase).execute(
FAKE_GET_LOGIN_SSO_LINK_RESULT_CALLBACK,
FAKE_GET_SSO_LINK_USE_CASE_PARAMS);
}
Where the fake vars are: 伪造的var是：
private static final ICallback<GetLoginSsoLinkResult> FAKE_GET_LOGIN_SSO_LINK_RESULT_CALLBACK =
new ICallback<GetLoginSsoLinkResult>() {
@Override
public void onResult(GetLoginSsoLinkResult result) {}
@Override
public void onKoError(KOException exception) {}
@Override
public void onConnectivityError(ConnectivityException exception) {}
@Override
public void onGenericError(Exception exception) {}
};
private static final GetSsoLinkUseCase.Params FAKE_GET_SSO_LINK_USE_CASE_PARAMS =
new GetSsoLinkUseCase.Params(FAKE_SSO_URL);
If I run the test, I get the following error: 如果运行测试，则会出现以下错误：
Argument(s) are different!
Comparison Failure:
Argument(s) are different!
at com.xxx.xxxforstores.presenter.LoginSsoPresenterTest.WhenCallOnTryAgain_ThenShowLoadingIsCalledInView(LoginSsoPresenterTest.java:111) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) a
I have a little experience in unit test so I figure that I am probably doing something wrong, what I have to change to test a method like that? 我对单元测试有一点经验，所以我认为我可能做错了什么，我需要更改以测试类似的方法吗？
1 个解决方案
解决方案1
0 已采纳 2018-01-11 10:27:56
1) If mGetLoginSsoUseCase is a mock then you do not really need to set-up the .execute method with doNothing . 1）如果mGetLoginSsoUseCase是模拟的，那么您实际上不需要使用doNothing设置.execute方法。 Nothing will happen by default anyway 无论如何，默认情况下什么也不会发生
2) You cant really go for exact objects in the verify as one of the params is simply created on the fly: new GetSsoLinkUseCase.Params(mUrl) . 2）您不能真正在verify寻找确切的对象，因为其中一个参数是在运行中简单创建的： new GetSsoLinkUseCase.Params(mUrl) 。 I would go for any(class) checks which should be enough in your case: 我会去做any(class)检查，在您的情况下应该足够了：
verify(mGetSsoLinkUseCase).execute(
Mockito.any(ICallback.class),
Mockito.any(GetSsoLinkUseCase.Params.class));
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