CODEWITHSUNDEEP
javaspring-bootspring-webclient
zemirco
zemirco

Reputation: 16395

WebClient RequestHeadersUriSpec - The method in the type is not applicable for the arguments

I'm trying to mock the WebClient in one of my tests. I found some examples online where people do the same.

One example from spring-data-elasticsearch and another one from some tutorials.

Here is my own example:

@Test
public void mytest() {
  WebClient webClient = mock(WebClient.class);
  RequestHeadersUriSpec headersUriSpec = mock(RequestHeadersUriSpec.class);
  when(webClient.get()).thenReturn(headersUriSpec);
}

Unfortunately I see some warnings. Here is what I got:

WebClient.RequestHeadersUriSpec is a raw type. References to generic type WebClient.RequestHeadersUriSpec should be parameterized

When I change my code and add a wildcard to the RequestHeadersUriSpec I get another error message.

@Test
public void mytest() {
  WebClient webClient = mock(WebClient.class);
  RequestHeadersUriSpec<?> headersUriSpec = mock(RequestHeadersUriSpec.class);
  when(webClient.get()).thenReturn(headersUriSpec);
}

The method thenReturn(WebClient.RequestHeadersUriSpec<capture#1-of ?>) in the type OngoingStubbing<WebClient.RequestHeadersUriSpec<capture#1-of ?>> is not applicable for the arguments (WebClient.RequestHeadersUriSpec<capture#3-of ?>)

If I let Java infer the type I'm getting a third message.

@Test
public void mytest() {
  WebClient webClient = mock(WebClient.class);
  var headersUriSpec = mock(RequestHeadersUriSpec.class);
  when(webClient.get()).thenReturn(headersUriSpec);
}

Type safety: The expression of type WebClient.RequestHeadersUriSpec needs unchecked conversion to conform to WebClient.RequestHeadersUriSpec<capture#1-of ?>

Now I'm wondering

  1. Why does it work for the other projects?
  2. How can I solve my problem?

Upvotes: 2

Views: 4676

Answers (1)

devaga
devaga

Reputation: 376

Could you try with requestHeadersUriSpecMock and webClient defined like this:

    @Mock
    private WebClient webClientMock;
    
    @SuppressWarnings("rawtypes")
    @Mock
    private WebClient.RequestHeadersUriSpec requestHeadersUriSpecMock;

and then call, more or less as you wanted: when(webClientMock.get()).thenReturn(requestHeadersUriSpecMock);

Upvotes: 1

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