How to run a single test file with Karma/Jasmine?

Question

I'm using Karma and Jasmine for testing my Angular JS code. I managed to run all the tests in my project using Karma, but if I try to run just a single file I'm getting the following error: ReferenceError: describe is not defined. Is it possible to run just a single test file and if yes then how?

P.S. I'm using Intellij IDEA.

@JayKay what I do at the moment is just to comment out all the other test files that are included in karma.config.js and leave only my test file. I couldn't find a better solution yet. — Anton Belev, Sep 21 '15 at 14:34
thank you.... we can follow that until we found a solution. :) — JayKay, Sep 22 '15 at 05:06
@AntonBelev Hello, have you had any progress on this issue ? — BiAiB, Jan 21 '16 at 09:15
Hi, @BiAiB, no, not really. I have not had the time to investigate it further. — Anton Belev, Jan 21 '16 at 10:14
**[Please upvote this issue: *Run single karma test*](https://youtrack.jetbrains.com/issue/WEB-13173)** — Anton Dozortsev, Mar 15 '17 at 18:44
related: https://stackoverflow.com/questions/26552729/karma-run-single-test/55525936#55525936 — Luis Limas, Apr 04 '19 at 22:50

score 9 · Answer 1 · edited May 23 '17 at 10:30

9

Although it's not ideal, you can replace describe (and it) with fdescribe (and fit) so only those tests will be executed

On the other hand, xdescribe / xit excludes the tests from your suite

If you use Gulp, you can combine gulp-karma & yargs to pass in a pattern as argument.

source: https://stackoverflow.com/a/27696472/1782659

edited May 23 '17 at 10:30

Community

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answered Nov 10 '15 at 08:42

Pieter Willaert

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That's not an option : ) we have 3500+ tests. The idea is if you've just included a new test file and you want to run just this one. So far the only way is to comment out all the other test files from the karma.conf.js file. – Anton Belev Nov 10 '15 at 09:50
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the -f- option (focus) does just that (don't forget to remove it again before you commit) – Pieter Willaert Nov 10 '15 at 10:01
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Blech. it.only and describe.only are so much more intuitive. This worked, however. Thank you. – Jason Jul 24 '16 at 20:47
Here is a [good post (JSGuy)](https://thejsguy.com/2016/01/03/controlling-which-tests-run-in-jasmine.html) about this functionality. – Lee Jensen Jan 12 '18 at 15:45
So far a remember there is a lint setting or something like that to avoid commit focussed test commits. – Emir Herrera Jun 14 '20 at 22:02

GreensterRox · Answer 2 · 2017-06-08T13:35:09.280

If you are like me and you've inherited a suite of tests that are controlled by a task runner (e.g. gulp) and you are getting failures but are unsure which file is actually failing you can sanity check an individual file by running jasmine directly against it:

1.) Make sure you have jasmine installed (it may not be if wrapped inside your task runner configuration)

npm install jasmine

2.) Run jasmine against file:

./node_modules/.bin/jasmine /path/to/my/spec/file.js

or

./node_modules/jasmine/bin/jasmine.js /path/to/my/spec/file.js

How to run a single test file with Karma/Jasmine?

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