How to mock when i create object like the following












-2















How to mock listAPiMetrics when my code looks like this



List<JSONObject> metrics = new ApiMetricsClient().listApiMetrics(new ApiIdList(apiIds));









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    -2















    How to mock listAPiMetrics when my code looks like this



    List<JSONObject> metrics = new ApiMetricsClient().listApiMetrics(new ApiIdList(apiIds));









    share|improve this question



























      -2












      -2








      -2


      1






      How to mock listAPiMetrics when my code looks like this



      List<JSONObject> metrics = new ApiMetricsClient().listApiMetrics(new ApiIdList(apiIds));









      share|improve this question
















      How to mock listAPiMetrics when my code looks like this



      List<JSONObject> metrics = new ApiMetricsClient().listApiMetrics(new ApiIdList(apiIds));






      junit mockito






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      share|improve this question













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      edited Nov 26 '18 at 6:19









      codeLover

      2,2551620




      2,2551620










      asked Nov 26 '18 at 6:17









      Ramya KarunaRamya Karuna

      112




      112
























          1 Answer
          1






          active

          oldest

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          1














          You can not mock that behavior. Because you are initiate your object inside code. You need to inject dependencies via contrutor or somehow. Basically, you need to do dependency injection.



          Some mock frameworks (like moq from c#) able to mock only interface or abstract types so you need to inject your dependencies as interface which this is the most common way in general. Some frameworks like mockito/powermock allow to mock concrete types too (powermock also can be able to mock private methods as I remember).



          Change your code to work as below :



          class YourClass {
          private IApiMetricsClient apiMetricClient;
          public YourClass(IApiMetricsClient apiMetricClient) {
          this.apiMetricClient = apiMetricClient;
          }

          public [returnType] yourMethod() {
          List<JSONObject> metrics = this.apiMetricClient.listApiMetrics(new ApiIdList(apiIds));
          // other logics and return data or whatever

          }

          }





          share|improve this answer





















          • 1





            "able to mock only interface or abstract types" Just this part is not true, we can create a mock for a concrete class in Mockito. E.g. Person thing = mock(Person.class); I've been doing it for ages. But you're right everywhere else!

            – Dan Rayson
            Nov 26 '18 at 17:13











          • Somehow I remember it that way, maybe I just to confuse it with moq (from c#) We use it both all the time and switching between languages causes confusings like this one :) I will edit my answer. Thank you.

            – Emre Savcı
            Nov 26 '18 at 17:34











          • Thanks for the explanation. @EmreSavcı

            – Ramya Karuna
            Nov 27 '18 at 4:27











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          1 Answer
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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          1














          You can not mock that behavior. Because you are initiate your object inside code. You need to inject dependencies via contrutor or somehow. Basically, you need to do dependency injection.



          Some mock frameworks (like moq from c#) able to mock only interface or abstract types so you need to inject your dependencies as interface which this is the most common way in general. Some frameworks like mockito/powermock allow to mock concrete types too (powermock also can be able to mock private methods as I remember).



          Change your code to work as below :



          class YourClass {
          private IApiMetricsClient apiMetricClient;
          public YourClass(IApiMetricsClient apiMetricClient) {
          this.apiMetricClient = apiMetricClient;
          }

          public [returnType] yourMethod() {
          List<JSONObject> metrics = this.apiMetricClient.listApiMetrics(new ApiIdList(apiIds));
          // other logics and return data or whatever

          }

          }





          share|improve this answer





















          • 1





            "able to mock only interface or abstract types" Just this part is not true, we can create a mock for a concrete class in Mockito. E.g. Person thing = mock(Person.class); I've been doing it for ages. But you're right everywhere else!

            – Dan Rayson
            Nov 26 '18 at 17:13











          • Somehow I remember it that way, maybe I just to confuse it with moq (from c#) We use it both all the time and switching between languages causes confusings like this one :) I will edit my answer. Thank you.

            – Emre Savcı
            Nov 26 '18 at 17:34











          • Thanks for the explanation. @EmreSavcı

            – Ramya Karuna
            Nov 27 '18 at 4:27
















          1














          You can not mock that behavior. Because you are initiate your object inside code. You need to inject dependencies via contrutor or somehow. Basically, you need to do dependency injection.



          Some mock frameworks (like moq from c#) able to mock only interface or abstract types so you need to inject your dependencies as interface which this is the most common way in general. Some frameworks like mockito/powermock allow to mock concrete types too (powermock also can be able to mock private methods as I remember).



          Change your code to work as below :



          class YourClass {
          private IApiMetricsClient apiMetricClient;
          public YourClass(IApiMetricsClient apiMetricClient) {
          this.apiMetricClient = apiMetricClient;
          }

          public [returnType] yourMethod() {
          List<JSONObject> metrics = this.apiMetricClient.listApiMetrics(new ApiIdList(apiIds));
          // other logics and return data or whatever

          }

          }





          share|improve this answer





















          • 1





            "able to mock only interface or abstract types" Just this part is not true, we can create a mock for a concrete class in Mockito. E.g. Person thing = mock(Person.class); I've been doing it for ages. But you're right everywhere else!

            – Dan Rayson
            Nov 26 '18 at 17:13











          • Somehow I remember it that way, maybe I just to confuse it with moq (from c#) We use it both all the time and switching between languages causes confusings like this one :) I will edit my answer. Thank you.

            – Emre Savcı
            Nov 26 '18 at 17:34











          • Thanks for the explanation. @EmreSavcı

            – Ramya Karuna
            Nov 27 '18 at 4:27














          1












          1








          1







          You can not mock that behavior. Because you are initiate your object inside code. You need to inject dependencies via contrutor or somehow. Basically, you need to do dependency injection.



          Some mock frameworks (like moq from c#) able to mock only interface or abstract types so you need to inject your dependencies as interface which this is the most common way in general. Some frameworks like mockito/powermock allow to mock concrete types too (powermock also can be able to mock private methods as I remember).



          Change your code to work as below :



          class YourClass {
          private IApiMetricsClient apiMetricClient;
          public YourClass(IApiMetricsClient apiMetricClient) {
          this.apiMetricClient = apiMetricClient;
          }

          public [returnType] yourMethod() {
          List<JSONObject> metrics = this.apiMetricClient.listApiMetrics(new ApiIdList(apiIds));
          // other logics and return data or whatever

          }

          }





          share|improve this answer















          You can not mock that behavior. Because you are initiate your object inside code. You need to inject dependencies via contrutor or somehow. Basically, you need to do dependency injection.



          Some mock frameworks (like moq from c#) able to mock only interface or abstract types so you need to inject your dependencies as interface which this is the most common way in general. Some frameworks like mockito/powermock allow to mock concrete types too (powermock also can be able to mock private methods as I remember).



          Change your code to work as below :



          class YourClass {
          private IApiMetricsClient apiMetricClient;
          public YourClass(IApiMetricsClient apiMetricClient) {
          this.apiMetricClient = apiMetricClient;
          }

          public [returnType] yourMethod() {
          List<JSONObject> metrics = this.apiMetricClient.listApiMetrics(new ApiIdList(apiIds));
          // other logics and return data or whatever

          }

          }






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 26 '18 at 17:20

























          answered Nov 26 '18 at 12:00









          Emre SavcıEmre Savcı

          2,0961820




          2,0961820








          • 1





            "able to mock only interface or abstract types" Just this part is not true, we can create a mock for a concrete class in Mockito. E.g. Person thing = mock(Person.class); I've been doing it for ages. But you're right everywhere else!

            – Dan Rayson
            Nov 26 '18 at 17:13











          • Somehow I remember it that way, maybe I just to confuse it with moq (from c#) We use it both all the time and switching between languages causes confusings like this one :) I will edit my answer. Thank you.

            – Emre Savcı
            Nov 26 '18 at 17:34











          • Thanks for the explanation. @EmreSavcı

            – Ramya Karuna
            Nov 27 '18 at 4:27














          • 1





            "able to mock only interface or abstract types" Just this part is not true, we can create a mock for a concrete class in Mockito. E.g. Person thing = mock(Person.class); I've been doing it for ages. But you're right everywhere else!

            – Dan Rayson
            Nov 26 '18 at 17:13











          • Somehow I remember it that way, maybe I just to confuse it with moq (from c#) We use it both all the time and switching between languages causes confusings like this one :) I will edit my answer. Thank you.

            – Emre Savcı
            Nov 26 '18 at 17:34











          • Thanks for the explanation. @EmreSavcı

            – Ramya Karuna
            Nov 27 '18 at 4:27








          1




          1





          "able to mock only interface or abstract types" Just this part is not true, we can create a mock for a concrete class in Mockito. E.g. Person thing = mock(Person.class); I've been doing it for ages. But you're right everywhere else!

          – Dan Rayson
          Nov 26 '18 at 17:13





          "able to mock only interface or abstract types" Just this part is not true, we can create a mock for a concrete class in Mockito. E.g. Person thing = mock(Person.class); I've been doing it for ages. But you're right everywhere else!

          – Dan Rayson
          Nov 26 '18 at 17:13













          Somehow I remember it that way, maybe I just to confuse it with moq (from c#) We use it both all the time and switching between languages causes confusings like this one :) I will edit my answer. Thank you.

          – Emre Savcı
          Nov 26 '18 at 17:34





          Somehow I remember it that way, maybe I just to confuse it with moq (from c#) We use it both all the time and switching between languages causes confusings like this one :) I will edit my answer. Thank you.

          – Emre Savcı
          Nov 26 '18 at 17:34













          Thanks for the explanation. @EmreSavcı

          – Ramya Karuna
          Nov 27 '18 at 4:27





          Thanks for the explanation. @EmreSavcı

          – Ramya Karuna
          Nov 27 '18 at 4:27




















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