Runtime unit testing in JavaScript

Question

I've been testing JavaScript code using unit testing frameworks like jasmine and Qunit. But all these testing framework works only at load time, but I want to initiate the test cases at run time, for instance I want to test an object's value on a button click like below test case in Jasmine,

 function btnClick() {
        var temp++;                  
        describe("Test Suite Inside Button Click", function () {
            it("To test true value", function () {
                expect(temp).not.toEqual(-1);
            });

        });
    };

How to run the test cases dynamically ?

I dont understand. Do you want to run the test when you are actually clicking the button manually in the application? — Amygdaloideum, Dec 09 '16 at 15:19

score 0 · Answer 1 · answered Dec 09 '16 at 15:38

Here is how you do it.

Invoke the jasmineEnv at run time and run the test
Note that I'm clearing out the reporter div just to clean up the output- which may not to necessary in your case.
My setTimeout is only to load the div onto the page

See it in action here

var testFunc = function() {
  //this is optional- I'm just clearing the reporter out to run it on fiddle.
    $('.jasmine_html-reporter').remove();
    var jasmineEnv = jasmine.getEnv();
    describe('test', function() {
      it('sample test', function() {
        console.log('test ran');
        expect(true).toBe(true);
      });
    });
    jasmineEnv.execute()
}

setTimeout(function() {
    $('#myElement').click(testFunc);
}, 0);

Runtime unit testing in JavaScript

1 Answers1