it('should update treatment instruction data in UI', async(() => {
     const spy = spyOnProperty(appService.treatmentInstruction, 'next', 
     'get').and.returnValue(treatmentInst);

    ponent.updateTemplateInUI();
    fixture.whenStable().then(() => {
        expect(ponent.structuresInfo.length).toBe(2);
        expect(ponent.oarStructureLength).toBe(4);
        expect(ponent.notesArray.length).toBe(2);
    });
}));

ReferenceError: spyOnProperty is not defined error is ing on running test case.

I want to spyOn treatmentInstruction BehaviorSubjectthat is present in my service as mentioned below :

treatmentInstruction = new BehaviorSubject(this.myGlobalVar);
currentTreatmentInstruction = this.treatmentInstruction.asObservable();

it('should update treatment instruction data in UI', async(() => {
     const spy = spyOnProperty(appService.treatmentInstruction, 'next', 
     'get').and.returnValue(treatmentInst);

    ponent.updateTemplateInUI();
    fixture.whenStable().then(() => {
        expect(ponent.structuresInfo.length).toBe(2);
        expect(ponent.oarStructureLength).toBe(4);
        expect(ponent.notesArray.length).toBe(2);
    });
}));

ReferenceError: spyOnProperty is not defined error is ing on running test case.

I want to spyOn treatmentInstruction BehaviorSubjectthat is present in my service as mentioned below :

treatmentInstruction = new BehaviorSubject(this.myGlobalVar);
currentTreatmentInstruction = this.treatmentInstruction.asObservable();

• javascript
• angular
• typescript
• jasmine
• karma-jasmine

Share Improve this question Follow asked Jan 11, 2019 at 6:49 Nilesh GuptaNilesh Gupta 8122 silver badges99 bronze badges 10

• that should be spyOn – quirimmo Commented Jan 11, 2019 at 6:54
• spyOn is for installing spy on function. I want to spyOn on service property of type Observable. – Nilesh Gupta Commented Jan 11, 2019 at 6:58
• What is the version of jasmine you are using? – Rakesh Makluri Commented Jan 11, 2019 at 7:01
• "karma-jasmine": "~1.1.1", – Nilesh Gupta Commented Jan 11, 2019 at 7:02
• Upgrade to latest version, it should work. – Rakesh Makluri Commented Jan 11, 2019 at 7:08

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3 Answers 3

Sorted by: Reset to default 3

spyOnProperty was added on jasmine 2.6.0, be sure that you fulfill that requisite.

Since jasmine is a dependency of karma-jasmine update that instead. Looks like on old version of this library jasmine was added as a peer dependency so it would be up to you to install the correct version of jasmine.

Upgrade following "@types/jasmine": "~2.8.3", "jasmine-core": "~2.8.0",

I had this issue, updating jasmine version didn't help. The problem came for jshint, in your test directory you must modify your .jshuntrc file : in "globals": { add => "spyOnProperty" : false

Worked for me