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Is there a way to fake a method response using Mock or Stubs?



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30 pm US/Eastern)
2019 Community Moderator Election ResultsDoes HttpCalloutMock work when the tested method doesn't return HttpResponse?Mock class not working with Dynamic & Unique end-pointHTTP Mock Response class has 0 coverageIs there a way to create more than 50000 records in a unit test context?Mock Service .setBody()Post callout behavior assertions for unit test with static resource callout mock failBasic Mock Test Coverage HelpHow can I reference a trigger's method and/or variable from a test class?Can we mock relationships in Apex?Method Is Not Visible: APEX Trailhead Unit Testing Challenge



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3















I have a helper method in my code called canQueryObject, and that method returns a boolean. I have some code that calls the method via the following line of code:



if(!myObjectHelper.canQueryObject(Schema.SObjectType.<<objectType>>)) ...


I'd like to test some scenarios where the scenario is false. Is there a way I can use Mock or Stubs in a unit-test to set canQueryObject to false?






unit-test mock






share






























    3















    I have a helper method in my code called canQueryObject, and that method returns a boolean. I have some code that calls the method via the following line of code:



    if(!myObjectHelper.canQueryObject(Schema.SObjectType.<<objectType>>)) ...


    I'd like to test some scenarios where the scenario is false. Is there a way I can use Mock or Stubs in a unit-test to set canQueryObject to false?






    unit-test mock






    share


























      3












      3








      3








      I have a helper method in my code called canQueryObject, and that method returns a boolean. I have some code that calls the method via the following line of code:



      if(!myObjectHelper.canQueryObject(Schema.SObjectType.<<objectType>>)) ...


      I'd like to test some scenarios where the scenario is false. Is there a way I can use Mock or Stubs in a unit-test to set canQueryObject to false?






      unit-test mock






      share
















      I have a helper method in my code called canQueryObject, and that method returns a boolean. I have some code that calls the method via the following line of code:



      if(!myObjectHelper.canQueryObject(Schema.SObjectType.<<objectType>>)) ...


      I'd like to test some scenarios where the scenario is false. Is there a way I can use Mock or Stubs in a unit-test to set canQueryObject to false?






      unit-test mock




      unit-test mock





      share














      share












      share



      share








      edited 4 hours ago







      WEFX

















      asked 5 hours ago









      WEFXWEFX

      1588




      1588




















          1 Answer
          1






          active

          oldest

          votes


















          6














          I typically use a fairly simple pattern and don't bring in a framework. It would look something like the following:



          public virtual with sharing class MyObjectHelper

           static MyObjectHelper instance = new MyObjectHelper();
           @TestVisible static void setMock(MyObjectHelper mock) instance = mock; 

           public static Boolean canQueryObject(SObjectType sObjectType)
           
           return instance.getCanQueryObject(sObjectType);
           

           // the two method names cannot match or you will get a compile fail
           protected virtual Boolean getCanQueryObject(SObjectType sObjectType)
           
           return sObjectType.getDescribe().isQueryable();



          Then in your test, you can have a mock return always true or always false, as you wish.



          @IsTest
          class MyObjectHelperTests

           class HelperMock extends MyObjectHelper
           
           Boolean isQueryable = true;
           protected override Boolean getCanQueryObject(SObjectType sObjectType)
           
           return isQueryable;
           
           

           @IsTest static void testCannotQuery()
           
           HelperMock mock = new HelperMock();
           mock.isQueryable = false;
           MyObjectHelper.setMock(mock);

           Test.startTest();
           Boolean canQuery = MyObjectHelper.canQueryObject(...);
           Test.stopTest();

           system.assertEquals(false, canQuery, 'Some informative message');





          share






























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            6














            I typically use a fairly simple pattern and don't bring in a framework. It would look something like the following:



            public virtual with sharing class MyObjectHelper

             static MyObjectHelper instance = new MyObjectHelper();
             @TestVisible static void setMock(MyObjectHelper mock) instance = mock; 

             public static Boolean canQueryObject(SObjectType sObjectType)
             
             return instance.getCanQueryObject(sObjectType);
             

             // the two method names cannot match or you will get a compile fail
             protected virtual Boolean getCanQueryObject(SObjectType sObjectType)
             
             return sObjectType.getDescribe().isQueryable();



            Then in your test, you can have a mock return always true or always false, as you wish.



            @IsTest
            class MyObjectHelperTests

             class HelperMock extends MyObjectHelper
             
             Boolean isQueryable = true;
             protected override Boolean getCanQueryObject(SObjectType sObjectType)
             
             return isQueryable;
             
             

             @IsTest static void testCannotQuery()
             
             HelperMock mock = new HelperMock();
             mock.isQueryable = false;
             MyObjectHelper.setMock(mock);

             Test.startTest();
             Boolean canQuery = MyObjectHelper.canQueryObject(...);
             Test.stopTest();

             system.assertEquals(false, canQuery, 'Some informative message');





            share



























              6














              I typically use a fairly simple pattern and don't bring in a framework. It would look something like the following:



              public virtual with sharing class MyObjectHelper

               static MyObjectHelper instance = new MyObjectHelper();
               @TestVisible static void setMock(MyObjectHelper mock) instance = mock; 

               public static Boolean canQueryObject(SObjectType sObjectType)
               
               return instance.getCanQueryObject(sObjectType);
               

               // the two method names cannot match or you will get a compile fail
               protected virtual Boolean getCanQueryObject(SObjectType sObjectType)
               
               return sObjectType.getDescribe().isQueryable();



              Then in your test, you can have a mock return always true or always false, as you wish.



              @IsTest
              class MyObjectHelperTests

               class HelperMock extends MyObjectHelper
               
               Boolean isQueryable = true;
               protected override Boolean getCanQueryObject(SObjectType sObjectType)
               
               return isQueryable;
               
               

               @IsTest static void testCannotQuery()
               
               HelperMock mock = new HelperMock();
               mock.isQueryable = false;
               MyObjectHelper.setMock(mock);

               Test.startTest();
               Boolean canQuery = MyObjectHelper.canQueryObject(...);
               Test.stopTest();

               system.assertEquals(false, canQuery, 'Some informative message');





              share

























                6












                6








                6







                I typically use a fairly simple pattern and don't bring in a framework. It would look something like the following:



                public virtual with sharing class MyObjectHelper

                 static MyObjectHelper instance = new MyObjectHelper();
                 @TestVisible static void setMock(MyObjectHelper mock) instance = mock; 

                 public static Boolean canQueryObject(SObjectType sObjectType)
                 
                 return instance.getCanQueryObject(sObjectType);
                 

                 // the two method names cannot match or you will get a compile fail
                 protected virtual Boolean getCanQueryObject(SObjectType sObjectType)
                 
                 return sObjectType.getDescribe().isQueryable();



                Then in your test, you can have a mock return always true or always false, as you wish.



                @IsTest
                class MyObjectHelperTests

                 class HelperMock extends MyObjectHelper
                 
                 Boolean isQueryable = true;
                 protected override Boolean getCanQueryObject(SObjectType sObjectType)
                 
                 return isQueryable;
                 
                 

                 @IsTest static void testCannotQuery()
                 
                 HelperMock mock = new HelperMock();
                 mock.isQueryable = false;
                 MyObjectHelper.setMock(mock);

                 Test.startTest();
                 Boolean canQuery = MyObjectHelper.canQueryObject(...);
                 Test.stopTest();

                 system.assertEquals(false, canQuery, 'Some informative message');





                share













                I typically use a fairly simple pattern and don't bring in a framework. It would look something like the following:



                public virtual with sharing class MyObjectHelper

                 static MyObjectHelper instance = new MyObjectHelper();
                 @TestVisible static void setMock(MyObjectHelper mock) instance = mock; 

                 public static Boolean canQueryObject(SObjectType sObjectType)
                 
                 return instance.getCanQueryObject(sObjectType);
                 

                 // the two method names cannot match or you will get a compile fail
                 protected virtual Boolean getCanQueryObject(SObjectType sObjectType)
                 
                 return sObjectType.getDescribe().isQueryable();



                Then in your test, you can have a mock return always true or always false, as you wish.



                @IsTest
                class MyObjectHelperTests

                 class HelperMock extends MyObjectHelper
                 
                 Boolean isQueryable = true;
                 protected override Boolean getCanQueryObject(SObjectType sObjectType)
                 
                 return isQueryable;
                 
                 

                 @IsTest static void testCannotQuery()
                 
                 HelperMock mock = new HelperMock();
                 mock.isQueryable = false;
                 MyObjectHelper.setMock(mock);

                 Test.startTest();
                 Boolean canQuery = MyObjectHelper.canQueryObject(...);
                 Test.stopTest();

                 system.assertEquals(false, canQuery, 'Some informative message');






                share











                share


                share










                answered 4 hours ago









                Adrian Larson♦Adrian Larson

                111k19121259




                111k19121259













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