如何测试标头是否已正确添加到HTTP请求

Question

我有类似的方法：

@ExtendWith(MockitoExtension.class)
@MockitoSettings(strictness = Strictness.LENIENT)
class ProductFacadeImplTest {

  @Mock
  private NutritionixHeader nutritionixHeader;

  @Mock
  private RestTemplate restTemplate;

  @InjectMocks
  private ProductFacadeImpl productFacadeImpl;

  @Mock
  private UriComponentsBuilder uriComponentsBuilder;

  @Mock
  private ResponseEntity responseEntity;

  @Mock
  private HttpHeaders httpHeaders;

  @BeforeEach
  void setUp() {
    productFacadeImpl = new ProductFacadeImpl(nutritionixHeader, restTemplate);
  }

  @Test
  void addUniversalHeaderForRequest() {
    //given
    given(nutritionixHeader.getNutritionixAppId()).willReturn("id");
    given(nutritionixHeader.getNutritionixAppKey()).willReturn("key");

    //when
    productFacadeImpl.addUniversalHeaderForRequest();

    ArgumentCaptor<HttpEntity> httpEntityCapture = ArgumentCaptor.forClass(HttpEntity.class);
    ArgumentCaptor<HttpHeaders> httpHeadersCaptor = ArgumentCaptor.forClass(HttpHeaders.class);

    verify(httpHeaders).set(eq("x-app-id"), eq("id"));
    verify(httpHeaders).set(eq("x-app-key"), eq("key"));

    HttpHeaders headers = httpEntityCapture.getValue().getHeaders();

    assertEquals("id",
        headers.entrySet()
            .stream()
            .filter(entry -> entry.getKey().equals("x-app-id"))
            .map(Entry::getValue)
            .flatMap(Collection::stream)
            .findFirst()
            .orElse(""));
  }
}

我想测试我的方法是否向HTTP请求中正确添加了标头。

我的测试如下：

Wanted but not invoked:
httpHeaders.set("x-app-id", "id");
-> at com.application.nutritionix.service.ProductFacadeImplTest.addUniversalHeaderForRequest(ProductFacadeImplTest.java:196)
Actually, there were zero interactions with this mock.

但是当我启动它时，我收到的信息是：

ArgumentCaptor

我知道我想使用httpEntityCapture，但是我无法确定如何正确使用{{1}}来解决此示例。 感谢您对实现目标的建议。