Angular9 spy

it("should be able to upper case a string", function () {
var  spytoUpperCase  =  spyOn(String.prototype, 'toUpperCase')
expect(utils.toUpperCase).toBeDefined();
expect(utils.toUpperCase("hello world")).toEqual("HELLO WORLD");
expect(String.prototype.toUpperCase).toHaveBeenCalled();
expect(spytoUpperCase.calls.count()).toEqual(1);
});

Source: techiediaries.com

Similar codes

1 vote200 views1 answer
How to decode jwt token in angular
Javascript AngularJS
8 votes224 views2 answers
Update formgroup value angular
Javascript AngularJS
0 vote217 views1 answer
Extension for local storage in angular 8
Javascript AngularJS
0 vote208 views1 answer
Inject firebase in angularjs
Javascript AngularJS
0 vote214 views1 answer
How to add dropdown with filter in angular material
Javascript AngularJS
0 vote211 views1 answer
Angular call parent method and child method
Javascript AngularJS
0 vote198 views1 answer
Add route angular 3
Javascript AngularJS
1 vote206 views1 answer
Micro frontend angular
Javascript AngularJS
27 votes247 views6 answers
How to make a component reload in angular
Javascript AngularJS
0 vote218 views2 answers
Angular 4200 on ec2 access is localhost
Javascript AngularJS