Questions tagged [spyon]
116 questions
2
votes
1 answer
Angular2 final version: Injected Service method under unit test returning undefined
I am trying to write some unit-tests on a component that got some services injected into it, to load the data from server. Data is loaded in this component on OnInit() method. I am trying that service method returns some dummy data, using spyOn.…
Raj
- 127
- 2
- 9
2
votes
1 answer
Jasmine spyOn and how to use spies generally
I am starting out in JS unit testing and having a hard time getting my head around how to create meaningful tests with Jasmine spies.
it('should take an array of shopping items', function() {
spyOn(checkObj, 'getTotal');
checkObj.getTotal([1, 2,…
user1806692
- 143
- 1
- 10
2
votes
1 answer
Karma error - Expected undefined to be defined
I want to unit test my controller. I started with basic test assertions of expect API. But I am facing challenge in mocking scope methods inside a conditional check. I am getting an undefined error since it is not available under scope, only the…
RVR
- 97
- 3
- 13
2
votes
1 answer
SpyOn returns Expected a spy, but got Function
I am testing a controller that calls a service(through the goToPage function) in order to redirect using the spyOn. It's simple but I am getting "Expected a spy, but got Function." error. What am I doing wrong?
This is my Spec:
var…
Kratos
- 1,064
- 4
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- 39
2
votes
1 answer
Mocking a service and calling through in Jasmine
I'm trying to test a service in my AngularJS project. All I'm trying to do is see if the method on my service has called through. I thought that when you use 'and.callThrough()' in jasmine it called the method for you and then you can see if it was…
2K01B5
- 1,011
- 1
- 10
- 23
2
votes
2 answers
spyOn: Expected a spy, but got Function
I'm creating some Javascript tests using Jasmine framework. I am trying to use the spyOn() method to ensure a specific function have been called. here is my code
describe("Match a regular expression", function() {
var text = "sometext";…
Nash
- 85
- 2
- 8
1
vote
0 answers
Jest spy toHaveBeenCalled not seeing function as being hit
I am unit testing my JS file which consists of a lot of exported consts, with one of the functions calling some of the others held within the file, however I can't seem to get my test to see that it has done these calls - even though running the…
physicsboy
- 5,656
- 17
- 70
- 119
1
vote
2 answers
Mocking / Spying helper function in Angular Unit tests
I have a helper file with multiple function:
myHelpers.ts
export function fn1(a, b) {
return a * b;
}
export function fn2(a, b) {
return a + b;
}
export function fn3(a, b) {
return a - b;
}
The above file, as well are others are…
Oam Psy
- 8,555
- 32
- 93
- 157
1
vote
1 answer
How to spyOn method that returns Promise -Angular
The below method calls CheckLastEmployee method which returns true/false.
async nextEmployee(empId:number) {
let isLast;
await this.CheckLastEmployee(empId).then(x=>{isLast=x});
if (isLast) {
Submit();
}
}
More logic inside…
PRI
- 23
- 5
1
vote
0 answers
jest.spyOn mock return value not returning value
The code I'm trying to test:
const utils = require('../utils/utils');
let imageBuffer;
try {
imageBuffer = await utils.retrieveImageFromURI(params)
console.log(imageBuffer) // comes back as undefined when I…
lowcrawler
- 6,777
- 9
- 37
- 79
1
vote
1 answer
How to spyOn a function that is not part of the class under test with Jest and Typescript
I'm trying to spy on a function that come from uuidv4 package but I didn't figure out how to do that.
This is my User Class:
import { uuid } from 'uuidv4';
import { IUser } from '../interfaces/IUser';
export class User implements IUser {
…
Douglas Jordão
- 15
- 4
1
vote
1 answer
SpyOn on submodule method returns no spy in jasmine
I stumble on a problem that I cannot solve. I tried to spy on a sub-modules method but got the error that the moduleSpy is not a spy with the following error message. The module is an npm package.
Error: : Expected a spy, but got…
john doe
- 11
- 3
1
vote
0 answers
Jest SpyOn __mocks__ module
We mock our modules using __mocks__. I'd like to spyOn a module function in my test but it doesn't seem to be working. Related question, I'd also like to override a mocked module function for a test (ie throw an exception). How can I do…
jstokes
- 211
- 2
- 6
1
vote
1 answer
how do I test my load function using jasmine if it has been called?
This function is reading data from a JSON file and prints it out. it not supposed to be in a class. I'm having hard time testing it if has been called.
function load(nameString) {
nameString = nameString.toLowerCase().split(" ");
const fs =…
Sandyaxes
- 35
- 3
1
vote
1 answer
Unable to cover the code using Jasmine Spy
I am writing test cases for code coverage using typescript. I am using Jasmine spyOn, but it is not covered. But some of the methods are covered and I am not getting any error. I need your guidance to resolve this. I provide below the actual…
Deba
- 859
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