Questions tagged [spyon]
116 questions
1
vote
1 answer
How to Jest mock/spyOn a property of a class
I'm new to Jest so I apologise if my questioning doesn't read correctly, I'm unit testing a method on a vanilla JS class that has a reference to the class property 'this.original_params'. From reading the docs and many other Stackoverflow posts, I'm…
Matt Sartain
- 13
- 3
1
vote
1 answer
AddEventListener DOM event Jest testing
I have one Users vue component and I am trying to test mounted() with addEventListener.
Users.vue
=========
mounted(){
let viewPort = document.getElementById("Users-list"); ----> Here I am getting null for addEventListener.
…
Sapthika
- 31
- 1
- 4
1
vote
1 answer
Jasmine test case for PrimeNg Confirmation Service not working
I have a function which executes some operations in the "accept" call of PrimeNg Confirmation service. I tried to write a Unit test case for it as following:
fit('submit preview config', fakeAsync(() => {
addValues();
…
Rishabh Shukla
- 57
- 8
1
vote
1 answer
How to spy on a function called inside class object
I want to test if this.service.someMethod is called using jasmine spy.
Source file:
// src.ts
import { Service } from 'some-package';
export class Component {
service = new Service();
callMethod() {
this.service.thatMethod();
…
Anant_Kumar
- 764
- 1
- 7
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1
vote
2 answers
TypeError: Cannot read property 'subscribe' of undefined using spyOn
I am expecting an array to be undefined in a test of my Angular app. In order to do that, my test needs to first call a function of my tested component. Within that function, it subscribes to a service's function.
Here is my test class. Including…
Drew13
- 1,301
- 5
- 28
- 50
1
vote
1 answer
Jest spyOn not called when deeper in call chain
I thought I'd be able to spyOn a function in my module but it doesn't register as being called even though it obviously was. Here's a boiled down sample.js:
const func1 = () => {
return func2();
};
const func2 = () => {
return "func2…
Always Learning
- 5,510
- 2
- 17
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1
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1 answer
How to spy on a function that is also referenced by a property
Given this code:
function getAnimal(type, color) {
console.log('blub'); // this is triggered when executing the test
}
this.getAnimal = getAnimal;
and this testing code:
describe('getAnimal()', function() {
it('should get an animal based on…
GarfieldKlon
- 11,170
- 7
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1
vote
1 answer
How to SpyOn function inside Function and return Fake value
This Question seems to be same but definitely not duplicate.
In one of my function i am calling this.cordovaFile.readAsArrayBuffer(this.cordovaFile.dataDirectory, key)
this cordovafile.readAsArrayBuffer() reads data from ipad File storage, but in…
Vikas Kalapur
- 415
- 4
- 12
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vote
0 answers
Jasmine spy setup for Promise wraps Observable
I am writing Angular a unit test case for a promise that wraps the observable call using Jasmine. I am not able to mock this promise in order to test it.
Component
ngOnInit(){
this.getOrder().then(
() => {
…
Developer
- 487
- 9
- 28
1
vote
1 answer
How can we mock (spyOn) a method call in typescript test case?
save()
{
.....
this.saveSelectedOnes();
.....
}
I have already written a test case for saveSelectedOnes() method. While writing test case for save method, how can we skip the saveSelectedOnes() method call?
Spring
- 11
- 3
1
vote
1 answer
What range of problems jest.fn() is intended to solve?
Maybe I am so badly dumb, but I cannot understand what jest.fn() does precisely and how it is used. I am new to testing and I've got basicly most functionality of jest, but jest.fn() makes me shaking.
I tried to refer to docs, watch tutorials, but…
Alexander Prisazhny
- 154
- 3
- 12
1
vote
2 answers
Angular Service becomes undefined when spyOn it
I have an Angular 1.6.6 application which I'm testing with Karma and Jasmine.
Given this code from controller:
$scope.undo = function () {
return $scope.isUndoDisabled() || $scope.undoAction();
};
$scope.isUndoDisabled =…
Rafa Romero
- 2,667
- 5
- 25
- 51
1
vote
1 answer
Using Jasmine spyOn with a method of an object defined in a factory
In my angular JS application I have a mainController which takes in a userFactory as a parameter.
The userFactory consists of an object called userService which in turn has a userDetails object and some methods including resetUserDetails. (see…
Sarah
- 1,943
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1
vote
2 answers
Is using spyOn() without a method possible?
I'm new to jasmine and spies thing, hope you could point to the right direction.
I have an event listener that i want to cover with unit test:
var nextTurn = function() {
continueButton.addEventListener("click",…
Liudas Belickas
- 11
- 3
1
vote
1 answer
Angular unit Testing spyOn().and.callthrough doesn't call actual funciton
I am new in unit testing with Jasmine in Angular.
I am currently testing a service that has a function called loadSomething(id) and I have added a console.info in it.
MY SERVICE:
function loadSomething(id)
{
console.info('this is a test…
user2998261
- 11
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