spring - resttemplate junit exchange method response null

Question

below code snippet of consume webservice using rest template and its working fine.

HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
headers.set(HttpHeaders.AUTHORIZATION, token);
        
HttpEntity<Map<String, Object>> entity = new HttpEntity<>(headers);
        
UriComponentsBuilder builder = UriComponentsBuilder.fromUriString(property.getApiUrl())   
    .queryParam(NAME, "test")
    .queryParam(AGE, 10);                      
UriComponents uriComponents = builder.build().encode();
 ResponseEntity<List<User>> response = restTemplate.exchange(uriComponents.toUri(), HttpMethod.GET, entity, new ParameterizedTypeReference<List<User>>() {});
List<User> searchResult = response.getBody();

When I prepare test case using mockit and while executing actual method always response returns null. I have mocked like below

ResponseEntity<List<User>> myEntity = new ResponseEntity<>(Arrays.asList(new User()), HttpStatus.OK);
when(restTemplate.exchange(
    uriComponents.toUri(),
    HttpMethod.GET,
    entity,
    new ParameterizedTypeReference<List<User>>() {})
).thenReturn(myEntity);

question from:https://stackoverflow.com/questions/66062013/resttemplate-junit-exchange-method-response-null

Answer 1

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