在 Retrofit 的官方存储库中有一个有用的示例:
https://github.com/square/retrofit/tree/master/retrofit-mock
我还发现:https://touk.pl/blog/2014/02/26/mock-retrofit-using-dagger-and-mockito/
你会在这里找到这个片段:
单元测试
在应用程序开发过程中,您可以随时向服务器发送请求(或
大多数时候)所以可以在没有模拟服务器的情况下生活,它
很烂,但有可能。可惜你写的不好
没有模拟的测试。下面有两个单元测试。其实他们
不测试任何东西,但以简单的方式展示如何模拟Retrofit
使用Mockito 和Dagger 提供服务。
@RunWith(RobolectricTestRunner.class)
public class EchoServiceTest {
@Inject
protected EchoService loginService;
@Inject
protected Client client;
@Before
public void setUp() throws Exception {
Injector.add(new AndroidModule(),
new RestServicesModule(),
new RestServicesMockModule(),
new TestModule());
Injector.inject(this);
}
@Test
public void shouldReturnOfferInAsyncMode() throws IOException {
//given
int expectedQuantity = 765;
String responseContent = "{" +
" \"message\": \"mock message\"," +
" \"quantity\": \"" + expectedQuantity + "\"" +
"}";
mockResponseWithCodeAndContent(200, responseContent);
//when
EchoResponse echoResponse = loginService.getMessageAndQuantity("test", "test");
//then
assertThat(echoResponse.getQuantity()).isEqualTo(expectedQuantity);
}
@Test
public void shouldReturnOfferInAsyncModea() throws IOException {
//given
int expectedQuantity = 2;
String responseContent = "{" +
" \"message\": \"mock message\"," +
" \"quantity\": \"" + expectedQuantity + "\"" +
"}";
mockResponseWithCodeAndContent(200, responseContent);
//when
EchoResponse echoResponse = loginService.getMessageAndQuantity("test", "test");
//then
assertThat(echoResponse.getQuantity()).isEqualTo(expectedQuantity);
}
protected void mockResponseWithCodeAndContent(int httpCode, String content) throws IOException {
Response response = createResponseWithCodeAndJson(httpCode, content);
when(client.execute(Matchers.anyObject())).thenReturn(response);
}
private Response createResponseWithCodeAndJson(int responseCode, String json) {
return new Response(responseCode, "nothing", Collections.EMPTY_LIST, new TypedByteArray("application/json", json.getBytes()));
}
另请阅读:Square retrofit server mock for testing
希望对你有帮助