我正在编写用于使用Retrofit2进行调用的存储库的单元测试。
从服务器收到Call
后,我想测试逻辑。
问题:分别运行每个测试时,所有测试均通过,但是对类运行所有测试时,仅一个测试通过。其他测试失败,原因是:Wanted but not invoked: ... However, there was exactly 1 interaction with this mock:
指向listener.onDataFailure()
。这样做的原因:调用总是返回相同的对象Calls.failure(IOException())
作为每次测试的结果。
存储库类代码:
public class Repository {
private static Repository repository;
private Repository(@NonNull final RetrofitService service) {
this.service = service;
}
public synchronized static Repository getInstance(RetrofitService service) {
if (repository == null) {
repository = new Repository(service);
}
return repository;
}
public void getDataFromApi(@NonNull final DataListener listener) {
service.getData("application/json").clone().enqueue(new Callback<DataList>() {
@Override
public void onResponse(@NonNull Call<DataList> call, @NonNull Response<DataList> response) {
if (response.errorBody() == null && response.body() != null) {
listener.onDataSuccess(response.body())
} else {
listener.onDataFailure(new Exception(t.getMessage()));
}
}
@Override
public void onFailure(@NonNull Call<DataList> call, @NonNull Throwable t) {
listener.onDataFailure(new Exception(t.getMessage()));
}
});
}
}
RepositoryTest类代码:
import com.google.common.truth.Truth.assertThat
import okhttp3.ResponseBody
import org.junit.*
import org.mockito.*
import org.mockito.Mockito.*
import retrofit2.Call
import retrofit2.Response
import retrofit2.mock.Calls
import java.io.IOException
import org.mockito.Mockito.`when` as mockitoWhen
class RepositoryTest {
@Mock
lateinit var retrofitService: RetrofitService
@Mock
lateinit var dataListener: DataListener
@Mock
lateinit var body: ResponseBody
private lateinit var repo: Repository
@Before
fun setup() {
MockitoAnnotations.initMocks(this)
repo = Repository.getInstance(retrofitService)
}
@Test
fun `geteData given_failure result_onDataFailure called`() {
val call: Call<DataList> = Calls.failure(IOException())
mockitoWhen(retrofitService.getData(any(), any()))
.thenReturn(call.clone())
repo.getDataFromApi(dataListener)
verify(dataListener).onDataFailure(ArgumentMatchers.any())
}
@Test
fun `geteData given_success result_onDataSuccess called`() {
val call: Call<DataList> = Calls.response(Response.success(dataList))
mockitoWhen(retrofitService.getData(any(), any()))
.thenReturn(call.clone())
repo.getDataFromApi(dataListener)
verify(dataListener).onDataFailure(ArgumentMatchers.any())
}
}
因此,在上述1个测试通过的情况下,在同一对象上调用dataListener.onDataFailure
的两种情况下,另一个测试均失败。
同时,分别运行这两种方法将获得2次通过。
问题:为什么每个单元测试都返回相同的Call
对象(导致测试失败)?