RestTemplate Mock throws NullPointerException
I have a rest template that makes a call in a method in a service class like so:
public CustomerResponse someMethod() {
CustomerResponse response = restTemplate.exchange(url, HttpMethod.GET, null, CustomerRes.class).getBody();
return response;
}
When trying to mock the restTemplate in my test class, it keeps throwing a NullPointerException on the line where the mock restTemplate is called:
public void checkResponseIsNotNull() {
CustomerResponse customerResponseMock = mock(CustomerResponse.class);
when(restTemplate.exchange(url, HttpMethod.GET, null, CustomerResponse.class).getBody()).thenReturn(customerResponseMock);
CustomerResponse cr = service.someMethod();
Assert.assertNotNull(cr);
}
Why is NullPointer being thrown? I have mocked a RestTemplate before, just without the getBody() method which leads be to believe its that which is causing the null pointer.
java spring junit mocking mockito
asked Nov 13 '18 at 16:02
decprogdecprog
75110
add a comment |
I have a rest template that makes a call in a method in a service class like so:
public CustomerResponse someMethod() {
CustomerResponse response = restTemplate.exchange(url, HttpMethod.GET, null, CustomerRes.class).getBody();
return response;
}
When trying to mock the restTemplate in my test class, it keeps throwing a NullPointerException on the line where the mock restTemplate is called:
public void checkResponseIsNotNull() {
CustomerResponse customerResponseMock = mock(CustomerResponse.class);
when(restTemplate.exchange(url, HttpMethod.GET, null, CustomerResponse.class).getBody()).thenReturn(customerResponseMock);
CustomerResponse cr = service.someMethod();
Assert.assertNotNull(cr);
}
Why is NullPointer being thrown? I have mocked a RestTemplate before, just without the getBody() method which leads be to believe its that which is causing the null pointer.
java spring junit mocking mockito
asked Nov 13 '18 at 16:02
decprogdecprog
75110
add a comment |
I have a rest template that makes a call in a method in a service class like so:
public CustomerResponse someMethod() {
CustomerResponse response = restTemplate.exchange(url, HttpMethod.GET, null, CustomerRes.class).getBody();
return response;
}
When trying to mock the restTemplate in my test class, it keeps throwing a NullPointerException on the line where the mock restTemplate is called:
public void checkResponseIsNotNull() {
CustomerResponse customerResponseMock = mock(CustomerResponse.class);
when(restTemplate.exchange(url, HttpMethod.GET, null, CustomerResponse.class).getBody()).thenReturn(customerResponseMock);
CustomerResponse cr = service.someMethod();
Assert.assertNotNull(cr);
}
Why is NullPointer being thrown? I have mocked a RestTemplate before, just without the getBody() method which leads be to believe its that which is causing the null pointer.
java spring junit mocking mockito
asked Nov 13 '18 at 16:02
decprogdecprog
75110
I have a rest template that makes a call in a method in a service class like so:
public CustomerResponse someMethod() {
CustomerResponse response = restTemplate.exchange(url, HttpMethod.GET, null, CustomerRes.class).getBody();
return response;
}
When trying to mock the restTemplate in my test class, it keeps throwing a NullPointerException on the line where the mock restTemplate is called:
public void checkResponseIsNotNull() {
CustomerResponse customerResponseMock = mock(CustomerResponse.class);
when(restTemplate.exchange(url, HttpMethod.GET, null, CustomerResponse.class).getBody()).thenReturn(customerResponseMock);
CustomerResponse cr = service.someMethod();
Assert.assertNotNull(cr);
}
Why is NullPointer being thrown? I have mocked a RestTemplate before, just without the getBody() method which leads be to believe its that which is causing the null pointer.
java spring junit mocking mockito
java spring junit mocking mockito
asked Nov 13 '18 at 16:02
decprogdecprog
75110
asked Nov 13 '18 at 16:02
decprogdecprog
75110
asked Nov 13 '18 at 16:02
decprogdecprog
75110
asked Nov 13 '18 at 16:02
decprogdecprog
75110
asked Nov 13 '18 at 16:02
decprogdecprog
75110
75110
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You should add one more level of mocking:
CustomerResponse customerResponseMock = mock(CustomerResponse.class);
ResponseEntity reMock = mock(ResponseEntity.class);
when(reMock.getBody()).thenReturn(customerResponseMock);
when(restTemplate.exchange(url, HttpMethod.GET, null, CustomerResponse.class)).thenReturn(reMock);
CustomerResponse cr = service.someMethod();
Originally you were setting-up the ResponseEntity only and the RestTemplate still remained with the defaults.. thus returning null when exchange has been called.
answered Nov 13 '18 at 16:15
Maciej KowalskiMaciej Kowalski
11.7k72037
Thanks, that helped solve the issue. Can you only do one level of mocking at a time?
– decprog
Nov 13 '18 at 16:20
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53284914%2fresttemplate-mock-throws-nullpointerexception%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You should add one more level of mocking:
CustomerResponse customerResponseMock = mock(CustomerResponse.class);
ResponseEntity reMock = mock(ResponseEntity.class);
when(reMock.getBody()).thenReturn(customerResponseMock);
when(restTemplate.exchange(url, HttpMethod.GET, null, CustomerResponse.class)).thenReturn(reMock);
CustomerResponse cr = service.someMethod();
Originally you were setting-up the ResponseEntity only and the RestTemplate still remained with the defaults.. thus returning null when exchange has been called.
answered Nov 13 '18 at 16:15
Maciej KowalskiMaciej Kowalski
11.7k72037
Thanks, that helped solve the issue. Can you only do one level of mocking at a time?
– decprog
Nov 13 '18 at 16:20
add a comment |
You should add one more level of mocking:
CustomerResponse customerResponseMock = mock(CustomerResponse.class);
ResponseEntity reMock = mock(ResponseEntity.class);
when(reMock.getBody()).thenReturn(customerResponseMock);
when(restTemplate.exchange(url, HttpMethod.GET, null, CustomerResponse.class)).thenReturn(reMock);
CustomerResponse cr = service.someMethod();
Originally you were setting-up the ResponseEntity only and the RestTemplate still remained with the defaults.. thus returning null when exchange has been called.
answered Nov 13 '18 at 16:15
Maciej KowalskiMaciej Kowalski
11.7k72037
Thanks, that helped solve the issue. Can you only do one level of mocking at a time?
– decprog
Nov 13 '18 at 16:20
add a comment |
You should add one more level of mocking:
CustomerResponse customerResponseMock = mock(CustomerResponse.class);
ResponseEntity reMock = mock(ResponseEntity.class);
when(reMock.getBody()).thenReturn(customerResponseMock);
when(restTemplate.exchange(url, HttpMethod.GET, null, CustomerResponse.class)).thenReturn(reMock);
CustomerResponse cr = service.someMethod();
Originally you were setting-up the ResponseEntity only and the RestTemplate still remained with the defaults.. thus returning null when exchange has been called.
answered Nov 13 '18 at 16:15
Maciej KowalskiMaciej Kowalski
11.7k72037
You should add one more level of mocking:
CustomerResponse customerResponseMock = mock(CustomerResponse.class);
ResponseEntity reMock = mock(ResponseEntity.class);
when(reMock.getBody()).thenReturn(customerResponseMock);
when(restTemplate.exchange(url, HttpMethod.GET, null, CustomerResponse.class)).thenReturn(reMock);
CustomerResponse cr = service.someMethod();
Originally you were setting-up the ResponseEntity only and the RestTemplate still remained with the defaults.. thus returning null when exchange has been called.
answered Nov 13 '18 at 16:15
Maciej KowalskiMaciej Kowalski
11.7k72037
answered Nov 13 '18 at 16:15
Maciej KowalskiMaciej Kowalski
11.7k72037
answered Nov 13 '18 at 16:15
Maciej KowalskiMaciej Kowalski
11.7k72037
answered Nov 13 '18 at 16:15
Maciej KowalskiMaciej Kowalski
11.7k72037
11.7k72037
Thanks, that helped solve the issue. Can you only do one level of mocking at a time?
– decprog
Nov 13 '18 at 16:20
add a comment |
Thanks, that helped solve the issue. Can you only do one level of mocking at a time?
– decprog
Nov 13 '18 at 16:20
Thanks, that helped solve the issue. Can you only do one level of mocking at a time?
– decprog
Nov 13 '18 at 16:20
Thanks, that helped solve the issue. Can you only do one level of mocking at a time?
– decprog
Nov 13 '18 at 16:20
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53284914%2fresttemplate-mock-throws-nullpointerexception%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
