Mocking a generic RestTemplate with Mockito 2 stubs the arguments as null or an empty string












0














Here is my stubbing code. The exchange method is called with the proper parameters (shown below the stubbing code) but for some reason, the when().then() statement is looking for null parameters. Why is the PotentialStubbingProblem exception being thrown here?



@BeforeEach
public <T> void configureMocks() {
when(apiAccess.getKey()).thenReturn("abcdefghijklmnopqrstuvwxyz");
when(apiAccess.getUrlPrefix()).thenReturn("{region}.api.riotgames.com");
val response = new ResponseEntity<Collection<T>>(HttpStatus.OK);
when(restTemplate.exchange(ArgumentMatchers.anyString(),
ArgumentMatchers.any(HttpMethod.class),
(HttpEntity<?>) isNull(),
eq(new ParameterizedTypeReference<Collection<T>>() {})))
.thenReturn(response);
}


PotentialStubbingProblem output is shown belown:



org.mockito.exceptions.misusing.PotentialStubbingProblem: 
Strict stubbing argument mismatch. Please check:
- this invocation of 'exchange' method:
restTemplate.exchange(
https://JP1.api.riotgames.com/lol/champion-mastery/v3/champion-masteries/by-summoner/1234567890?api_key=abcdefghijklmnopqrstuvwxyz,
GET,
null,
ParameterizedTypeReference<java.util.Collection<T>>
);
-> at org.eyeoftheherald.riotapiinterface.service.RiotApiService.getEntityList(RiotApiService.java:176)
- has following stubbing(s) with different arguments:
1. restTemplate.exchange("", null, null, null);


ApiAccess is shown below:



@Configuration
public class RiotApiInterfaceConfiguration {
@Getter
@Setter
@Configuration
@PropertySource("classpath:configuration.properties")
@ConfigurationProperties(prefix = "api-access")
public static class ApiAccess {
private String key;
private String urlPrefix;
}

@Autowired
public RiotApiInterfaceConfiguration() {
}

@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
}









share|improve this question
























  • What is the type of apiAccess?
    – chrylis
    Nov 12 '18 at 0:45










  • apiAccess is a spring configuration class, I'll post the source in the OP
    – Nuradin
    Nov 12 '18 at 1:07












  • Note that there is an interface RestOperations that is easier to mock specifically for this case.
    – chrylis
    Nov 12 '18 at 1:45










  • I've never seen that interface, I'll do some research on it. How would I mock out an exchange call from its implemented interface? OH kind of vital piece of information but if I haven't made it clear -- this is a unit test :)
    – Nuradin
    Nov 12 '18 at 1:54












  • 1) What do your actual invocations look like? 2) Do you have multiple stubbings defined for that method? 3) Did you mean any instead of eq within the following definition eq(new ParameterizedTypeReference<Collection<T>>() {}))?
    – Morfic
    Nov 12 '18 at 17:06
















0














Here is my stubbing code. The exchange method is called with the proper parameters (shown below the stubbing code) but for some reason, the when().then() statement is looking for null parameters. Why is the PotentialStubbingProblem exception being thrown here?



@BeforeEach
public <T> void configureMocks() {
when(apiAccess.getKey()).thenReturn("abcdefghijklmnopqrstuvwxyz");
when(apiAccess.getUrlPrefix()).thenReturn("{region}.api.riotgames.com");
val response = new ResponseEntity<Collection<T>>(HttpStatus.OK);
when(restTemplate.exchange(ArgumentMatchers.anyString(),
ArgumentMatchers.any(HttpMethod.class),
(HttpEntity<?>) isNull(),
eq(new ParameterizedTypeReference<Collection<T>>() {})))
.thenReturn(response);
}


PotentialStubbingProblem output is shown belown:



org.mockito.exceptions.misusing.PotentialStubbingProblem: 
Strict stubbing argument mismatch. Please check:
- this invocation of 'exchange' method:
restTemplate.exchange(
https://JP1.api.riotgames.com/lol/champion-mastery/v3/champion-masteries/by-summoner/1234567890?api_key=abcdefghijklmnopqrstuvwxyz,
GET,
null,
ParameterizedTypeReference<java.util.Collection<T>>
);
-> at org.eyeoftheherald.riotapiinterface.service.RiotApiService.getEntityList(RiotApiService.java:176)
- has following stubbing(s) with different arguments:
1. restTemplate.exchange("", null, null, null);


ApiAccess is shown below:



@Configuration
public class RiotApiInterfaceConfiguration {
@Getter
@Setter
@Configuration
@PropertySource("classpath:configuration.properties")
@ConfigurationProperties(prefix = "api-access")
public static class ApiAccess {
private String key;
private String urlPrefix;
}

@Autowired
public RiotApiInterfaceConfiguration() {
}

@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
}









share|improve this question
























  • What is the type of apiAccess?
    – chrylis
    Nov 12 '18 at 0:45










  • apiAccess is a spring configuration class, I'll post the source in the OP
    – Nuradin
    Nov 12 '18 at 1:07












  • Note that there is an interface RestOperations that is easier to mock specifically for this case.
    – chrylis
    Nov 12 '18 at 1:45










  • I've never seen that interface, I'll do some research on it. How would I mock out an exchange call from its implemented interface? OH kind of vital piece of information but if I haven't made it clear -- this is a unit test :)
    – Nuradin
    Nov 12 '18 at 1:54












  • 1) What do your actual invocations look like? 2) Do you have multiple stubbings defined for that method? 3) Did you mean any instead of eq within the following definition eq(new ParameterizedTypeReference<Collection<T>>() {}))?
    – Morfic
    Nov 12 '18 at 17:06














0












0








0







Here is my stubbing code. The exchange method is called with the proper parameters (shown below the stubbing code) but for some reason, the when().then() statement is looking for null parameters. Why is the PotentialStubbingProblem exception being thrown here?



@BeforeEach
public <T> void configureMocks() {
when(apiAccess.getKey()).thenReturn("abcdefghijklmnopqrstuvwxyz");
when(apiAccess.getUrlPrefix()).thenReturn("{region}.api.riotgames.com");
val response = new ResponseEntity<Collection<T>>(HttpStatus.OK);
when(restTemplate.exchange(ArgumentMatchers.anyString(),
ArgumentMatchers.any(HttpMethod.class),
(HttpEntity<?>) isNull(),
eq(new ParameterizedTypeReference<Collection<T>>() {})))
.thenReturn(response);
}


PotentialStubbingProblem output is shown belown:



org.mockito.exceptions.misusing.PotentialStubbingProblem: 
Strict stubbing argument mismatch. Please check:
- this invocation of 'exchange' method:
restTemplate.exchange(
https://JP1.api.riotgames.com/lol/champion-mastery/v3/champion-masteries/by-summoner/1234567890?api_key=abcdefghijklmnopqrstuvwxyz,
GET,
null,
ParameterizedTypeReference<java.util.Collection<T>>
);
-> at org.eyeoftheherald.riotapiinterface.service.RiotApiService.getEntityList(RiotApiService.java:176)
- has following stubbing(s) with different arguments:
1. restTemplate.exchange("", null, null, null);


ApiAccess is shown below:



@Configuration
public class RiotApiInterfaceConfiguration {
@Getter
@Setter
@Configuration
@PropertySource("classpath:configuration.properties")
@ConfigurationProperties(prefix = "api-access")
public static class ApiAccess {
private String key;
private String urlPrefix;
}

@Autowired
public RiotApiInterfaceConfiguration() {
}

@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
}









share|improve this question















Here is my stubbing code. The exchange method is called with the proper parameters (shown below the stubbing code) but for some reason, the when().then() statement is looking for null parameters. Why is the PotentialStubbingProblem exception being thrown here?



@BeforeEach
public <T> void configureMocks() {
when(apiAccess.getKey()).thenReturn("abcdefghijklmnopqrstuvwxyz");
when(apiAccess.getUrlPrefix()).thenReturn("{region}.api.riotgames.com");
val response = new ResponseEntity<Collection<T>>(HttpStatus.OK);
when(restTemplate.exchange(ArgumentMatchers.anyString(),
ArgumentMatchers.any(HttpMethod.class),
(HttpEntity<?>) isNull(),
eq(new ParameterizedTypeReference<Collection<T>>() {})))
.thenReturn(response);
}


PotentialStubbingProblem output is shown belown:



org.mockito.exceptions.misusing.PotentialStubbingProblem: 
Strict stubbing argument mismatch. Please check:
- this invocation of 'exchange' method:
restTemplate.exchange(
https://JP1.api.riotgames.com/lol/champion-mastery/v3/champion-masteries/by-summoner/1234567890?api_key=abcdefghijklmnopqrstuvwxyz,
GET,
null,
ParameterizedTypeReference<java.util.Collection<T>>
);
-> at org.eyeoftheherald.riotapiinterface.service.RiotApiService.getEntityList(RiotApiService.java:176)
- has following stubbing(s) with different arguments:
1. restTemplate.exchange("", null, null, null);


ApiAccess is shown below:



@Configuration
public class RiotApiInterfaceConfiguration {
@Getter
@Setter
@Configuration
@PropertySource("classpath:configuration.properties")
@ConfigurationProperties(prefix = "api-access")
public static class ApiAccess {
private String key;
private String urlPrefix;
}

@Autowired
public RiotApiInterfaceConfiguration() {
}

@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
}






java spring junit mockito resttemplate






share|improve this question















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edited Nov 12 '18 at 1:13

























asked Nov 11 '18 at 23:46









Nuradin

6219




6219












  • What is the type of apiAccess?
    – chrylis
    Nov 12 '18 at 0:45










  • apiAccess is a spring configuration class, I'll post the source in the OP
    – Nuradin
    Nov 12 '18 at 1:07












  • Note that there is an interface RestOperations that is easier to mock specifically for this case.
    – chrylis
    Nov 12 '18 at 1:45










  • I've never seen that interface, I'll do some research on it. How would I mock out an exchange call from its implemented interface? OH kind of vital piece of information but if I haven't made it clear -- this is a unit test :)
    – Nuradin
    Nov 12 '18 at 1:54












  • 1) What do your actual invocations look like? 2) Do you have multiple stubbings defined for that method? 3) Did you mean any instead of eq within the following definition eq(new ParameterizedTypeReference<Collection<T>>() {}))?
    – Morfic
    Nov 12 '18 at 17:06


















  • What is the type of apiAccess?
    – chrylis
    Nov 12 '18 at 0:45










  • apiAccess is a spring configuration class, I'll post the source in the OP
    – Nuradin
    Nov 12 '18 at 1:07












  • Note that there is an interface RestOperations that is easier to mock specifically for this case.
    – chrylis
    Nov 12 '18 at 1:45










  • I've never seen that interface, I'll do some research on it. How would I mock out an exchange call from its implemented interface? OH kind of vital piece of information but if I haven't made it clear -- this is a unit test :)
    – Nuradin
    Nov 12 '18 at 1:54












  • 1) What do your actual invocations look like? 2) Do you have multiple stubbings defined for that method? 3) Did you mean any instead of eq within the following definition eq(new ParameterizedTypeReference<Collection<T>>() {}))?
    – Morfic
    Nov 12 '18 at 17:06
















What is the type of apiAccess?
– chrylis
Nov 12 '18 at 0:45




What is the type of apiAccess?
– chrylis
Nov 12 '18 at 0:45












apiAccess is a spring configuration class, I'll post the source in the OP
– Nuradin
Nov 12 '18 at 1:07






apiAccess is a spring configuration class, I'll post the source in the OP
– Nuradin
Nov 12 '18 at 1:07














Note that there is an interface RestOperations that is easier to mock specifically for this case.
– chrylis
Nov 12 '18 at 1:45




Note that there is an interface RestOperations that is easier to mock specifically for this case.
– chrylis
Nov 12 '18 at 1:45












I've never seen that interface, I'll do some research on it. How would I mock out an exchange call from its implemented interface? OH kind of vital piece of information but if I haven't made it clear -- this is a unit test :)
– Nuradin
Nov 12 '18 at 1:54






I've never seen that interface, I'll do some research on it. How would I mock out an exchange call from its implemented interface? OH kind of vital piece of information but if I haven't made it clear -- this is a unit test :)
– Nuradin
Nov 12 '18 at 1:54














1) What do your actual invocations look like? 2) Do you have multiple stubbings defined for that method? 3) Did you mean any instead of eq within the following definition eq(new ParameterizedTypeReference<Collection<T>>() {}))?
– Morfic
Nov 12 '18 at 17:06




1) What do your actual invocations look like? 2) Do you have multiple stubbings defined for that method? 3) Did you mean any instead of eq within the following definition eq(new ParameterizedTypeReference<Collection<T>>() {}))?
– Morfic
Nov 12 '18 at 17:06

















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