Karma run single test

Question

I use karma for run tests. I have many tests and run all tests is very slow process. I want to run only single test in order to spend less time, because all test runs about

Answer 1

Change your karma conf to only include the test you want to run instead of a full directory.

Inside the files : [...]

You might want to comment the preprocessors if you need/want to debug your test in chrome to avoid having your js minified.

Answer 2

Yes, this is an old thread.

The following situation has occurred on me 2 - 3 times now in the past few years. More so when I haven't done much unit testing and have come back to it.

I started up my Karma and found the tests, after initial start up, should have completed within 1 second to now take 20 seconds. Additionally, attempting to debug the unit tests within Chrome became tediously slow. The network tab showed all the files taking 2 - 3 seconds per file.

Solution: I didn't realize Fiddler was open. Close it and restart your tests.

Answer 3

If you are using the Karma/Jasmine stack, use:

fdescribe("when ...", function () { // to [f]ocus on a single group of tests
  fit("should ...", function () {...}); // to [f]ocus on a single test case
});

... and:

xdescribe("when ...", function () { // to e[x]clude a group of tests
  xit("should ...", function () {...}); // to e[x]clude a test case
});

When you're on Karma/Mocha:

describe.only("when ...", function () { // to run [only] this group of tests
  it.only("should ...", function () {...}); // to run [only] this test case
});

... and:

describe.skip("when ...", function () { // to [skip] running this group of tests
  it.skip("should ...", function () {...}); // to [skip] running this test case
});