CODEWITHSUNDEEP
jasminekarma-runnerkarma-jasmine
4imble
4imble

Reputation: 14426

Karma test runner is slower than it should be

Basically i am test driving my knockout viewmodels in durandal.

I am up to 80 tests and the total running time is 58 seconds.

When i watched the video at : https://www.youtube.com/watch?v=5mHjJ4xf_K0#t=577 the guy runs over 1500 tests in under 3 seconds.

It would seem that i must be doing something very wrong.

Here is an example of one of my tests just to give some context to what i am doing.

define(["doubles/TestCart", "komapping", "generators/BenefitGenerator"],
function (vm, mapping, benefitGenerator)
{
    describe('When retrieving the cart data', function ()
    {
        var benefitOne = benefitGenerator.generateBenefit();
        var benefitTwo = benefitGenerator.generateBenefit({ Status: 1 });
        var benefitThree = benefitGenerator.generateBenefit({ Status: 2 });

        beforeEach(function (done)
        {
            vm.Reset();

            $.mockjax({
                url: "*/api/Benefits",
                contentType: "application/json",
                type: "get",
                responseText: [
                    benefitOne,
                    benefitTwo,
                    benefitThree
                ],
                onAfterComplete: function () { done(); }
            });

            //Act
            vm.refresh();
        });

        it('should have the correct benefits', function ()
        {
            expect(vm.allBenefits()[0].Id()).toEqual(benefitOne.Id);
            expect(vm.allBenefits()[1].Id()).toEqual(benefitTwo.Id);
            expect(vm.allBenefits()[2].Id()).toEqual(benefitThree.Id);
        });

        it('should have the correct cart count', function () {
            expect(vm.cartBenefitCount()).toEqual(1);
        });
    });
});

Note, i do not have the browser minimised and i cant yet quite use the new jasmine 2.1 beforeAll rather than beforeEach (although in tests this will half my run time).

==Addendum==

I have removed all the implementation out of the test, i just have an empty describe with no before each and then two empty its. Each it is taking half a second to run. It seems it is not my test itself but the config somehow, i'll keep looking.

==Addendum 2==

I have now got this down to 20 seconds. The issue was that i had a test with no "describe" it was running this test after each of its in all of the other tests. My bottleneck now seems to be mockjax which takes 500ms.

Upvotes: 2

Views: 1040

Answers (1)

4imble
4imble

Reputation: 14426

Okay so now i have the tests down to 0.2 seconds, quite an improvment i am sure you agree.

Steps to fix this for me were 2 fold:

Step 1) I had a test without a describe, karma was running this test after every single "it" for every test. Once i added the describe my run time went down to 20 seconds. This test with the missing describe was using mockjax which leads me to...

Step 2) Mockjax has a default response time of 500ms. This was costing me about 20 seconds. I set the config to $.mockjaxSettings.responseTime = 1; //1ms and now the run time is down to 0.23 seconds.

Hopefully this will help others.

Upvotes: 3

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