Unit testing Angular Jasmine Karma












-1















I'm learning Unit testing and I've



   @Input() showSearchTab: Boolean = false;
@Input() currentTab: string = null;

ngOnInit(): void {
if (this.showSearchTab) {
this.currentTab = 'search';
}
}


This is the unit test:



describe('ngOnInit()', () => { 
it('should set all the defaults', () => {
specManager.component.ngOnInit();
expect(specManager.component.currentTab).toBe('search');
});
});


I get an error expected null to be 'search'










share|improve this question























  • Can you share the complete code?

    – codeLover
    Nov 15 '18 at 14:39











  • you may need to initialize the value of this.showSearchTab in the test method

    – Shiju
    Nov 15 '18 at 14:41
















-1















I'm learning Unit testing and I've



   @Input() showSearchTab: Boolean = false;
@Input() currentTab: string = null;

ngOnInit(): void {
if (this.showSearchTab) {
this.currentTab = 'search';
}
}


This is the unit test:



describe('ngOnInit()', () => { 
it('should set all the defaults', () => {
specManager.component.ngOnInit();
expect(specManager.component.currentTab).toBe('search');
});
});


I get an error expected null to be 'search'










share|improve this question























  • Can you share the complete code?

    – codeLover
    Nov 15 '18 at 14:39











  • you may need to initialize the value of this.showSearchTab in the test method

    – Shiju
    Nov 15 '18 at 14:41














-1












-1








-1








I'm learning Unit testing and I've



   @Input() showSearchTab: Boolean = false;
@Input() currentTab: string = null;

ngOnInit(): void {
if (this.showSearchTab) {
this.currentTab = 'search';
}
}


This is the unit test:



describe('ngOnInit()', () => { 
it('should set all the defaults', () => {
specManager.component.ngOnInit();
expect(specManager.component.currentTab).toBe('search');
});
});


I get an error expected null to be 'search'










share|improve this question














I'm learning Unit testing and I've



   @Input() showSearchTab: Boolean = false;
@Input() currentTab: string = null;

ngOnInit(): void {
if (this.showSearchTab) {
this.currentTab = 'search';
}
}


This is the unit test:



describe('ngOnInit()', () => { 
it('should set all the defaults', () => {
specManager.component.ngOnInit();
expect(specManager.component.currentTab).toBe('search');
});
});


I get an error expected null to be 'search'







angular jasmine karma-runner






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 15 '18 at 14:37









K SK S

83




83













  • Can you share the complete code?

    – codeLover
    Nov 15 '18 at 14:39











  • you may need to initialize the value of this.showSearchTab in the test method

    – Shiju
    Nov 15 '18 at 14:41



















  • Can you share the complete code?

    – codeLover
    Nov 15 '18 at 14:39











  • you may need to initialize the value of this.showSearchTab in the test method

    – Shiju
    Nov 15 '18 at 14:41

















Can you share the complete code?

– codeLover
Nov 15 '18 at 14:39





Can you share the complete code?

– codeLover
Nov 15 '18 at 14:39













you may need to initialize the value of this.showSearchTab in the test method

– Shiju
Nov 15 '18 at 14:41





you may need to initialize the value of this.showSearchTab in the test method

– Shiju
Nov 15 '18 at 14:41












2 Answers
2






active

oldest

votes


















0














Following your component test, at the moment the test hits the expectation, showSearchTab is set to false, so it doesn't pass the if condition. To have a fully tested scenario, you should do:



describe('ngOnInit()', () => {
describe('and showSearchTab is set to false', () => {
it('should set all the defaults', () => {
specManager.component.showSearchTab = false;
specManager.component.ngOnInit();
expect(specManager.component.currentTab).toBeNull();
});
});

describe('and showSearchTab is set to true', () => {
it('should set all the defaults', () => {
specManager.component.showSearchTab = true;
specManager.component.ngOnInit();
expect(specManager.component.currentTab).toEqual('search');
});
});
});





share|improve this answer































    0














    As per your logic in ngOnInit function currentTab will have value search if showSearchTab is true.



    Thus, before invoking specManager.component.ngOnInit() in your test case, set specManager.component.currentTab = true;






    share|improve this answer























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      2 Answers
      2






      active

      oldest

      votes








      2 Answers
      2






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      0














      Following your component test, at the moment the test hits the expectation, showSearchTab is set to false, so it doesn't pass the if condition. To have a fully tested scenario, you should do:



      describe('ngOnInit()', () => {
      describe('and showSearchTab is set to false', () => {
      it('should set all the defaults', () => {
      specManager.component.showSearchTab = false;
      specManager.component.ngOnInit();
      expect(specManager.component.currentTab).toBeNull();
      });
      });

      describe('and showSearchTab is set to true', () => {
      it('should set all the defaults', () => {
      specManager.component.showSearchTab = true;
      specManager.component.ngOnInit();
      expect(specManager.component.currentTab).toEqual('search');
      });
      });
      });





      share|improve this answer




























        0














        Following your component test, at the moment the test hits the expectation, showSearchTab is set to false, so it doesn't pass the if condition. To have a fully tested scenario, you should do:



        describe('ngOnInit()', () => {
        describe('and showSearchTab is set to false', () => {
        it('should set all the defaults', () => {
        specManager.component.showSearchTab = false;
        specManager.component.ngOnInit();
        expect(specManager.component.currentTab).toBeNull();
        });
        });

        describe('and showSearchTab is set to true', () => {
        it('should set all the defaults', () => {
        specManager.component.showSearchTab = true;
        specManager.component.ngOnInit();
        expect(specManager.component.currentTab).toEqual('search');
        });
        });
        });





        share|improve this answer


























          0












          0








          0







          Following your component test, at the moment the test hits the expectation, showSearchTab is set to false, so it doesn't pass the if condition. To have a fully tested scenario, you should do:



          describe('ngOnInit()', () => {
          describe('and showSearchTab is set to false', () => {
          it('should set all the defaults', () => {
          specManager.component.showSearchTab = false;
          specManager.component.ngOnInit();
          expect(specManager.component.currentTab).toBeNull();
          });
          });

          describe('and showSearchTab is set to true', () => {
          it('should set all the defaults', () => {
          specManager.component.showSearchTab = true;
          specManager.component.ngOnInit();
          expect(specManager.component.currentTab).toEqual('search');
          });
          });
          });





          share|improve this answer













          Following your component test, at the moment the test hits the expectation, showSearchTab is set to false, so it doesn't pass the if condition. To have a fully tested scenario, you should do:



          describe('ngOnInit()', () => {
          describe('and showSearchTab is set to false', () => {
          it('should set all the defaults', () => {
          specManager.component.showSearchTab = false;
          specManager.component.ngOnInit();
          expect(specManager.component.currentTab).toBeNull();
          });
          });

          describe('and showSearchTab is set to true', () => {
          it('should set all the defaults', () => {
          specManager.component.showSearchTab = true;
          specManager.component.ngOnInit();
          expect(specManager.component.currentTab).toEqual('search');
          });
          });
          });






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 15 '18 at 14:47









          Miguel LeiteMiguel Leite

          10918




          10918

























              0














              As per your logic in ngOnInit function currentTab will have value search if showSearchTab is true.



              Thus, before invoking specManager.component.ngOnInit() in your test case, set specManager.component.currentTab = true;






              share|improve this answer




























                0














                As per your logic in ngOnInit function currentTab will have value search if showSearchTab is true.



                Thus, before invoking specManager.component.ngOnInit() in your test case, set specManager.component.currentTab = true;






                share|improve this answer


























                  0












                  0








                  0







                  As per your logic in ngOnInit function currentTab will have value search if showSearchTab is true.



                  Thus, before invoking specManager.component.ngOnInit() in your test case, set specManager.component.currentTab = true;






                  share|improve this answer













                  As per your logic in ngOnInit function currentTab will have value search if showSearchTab is true.



                  Thus, before invoking specManager.component.ngOnInit() in your test case, set specManager.component.currentTab = true;







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 15 '18 at 14:42









                  codeLovercodeLover

                  2,2551620




                  2,2551620






























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