When running on Travis, Karma reports 0 of N tests executed

I’m trying to make my Karma/Angular tests work on Travis as described here, but it keeps saying that 0 tests were executed:

Running "karma:test" (karma) task
INFO [karma]: Karma v0.12.31 server started at http://localhost:9876/
INFO [launcher]: Starting browser Firefox
INFO [Firefox 31.0.0 (Linux)]: Connected on socket C7AVrV2cfPpQquGp3ew4 with id 60880131
Firefox 31.0.0 (Linux): Executed 0 of 4 SUCCESS (0 secs / 0 secs)

There’s no such issue when I run the same thing locally, it reports “4 of 4”. There’s also a blog post by @Swizec where eventually the same result described: “Executed 0 of 114 SUCCESS” (there’s a screenshot at the very end).

Here’s my set up:

.travis.yml

language: node_js
node_js:
 - '0.11'
before_script:
 - export DISPLAY=:99.0
 - sh -e /etc/init.d/xvfb start

karma.conf.js

module.exports = function(config) {
  var c = {
    basePath: './',

    files: [...],

    autoWatch: true,
    frameworks: ['jasmine'],
    browsers: ['Firefox'],
    plugins: [
      'karma-firefox-launcher',
      'karma-jasmine'
    ]
  };  

  config.set(c);
};

Gruntfile.js

module.exports = function(grunt) {
  grunt.initConfig({
    ...
    karma: {
      options: {
        configFile: 'karma.conf.js'
      },
      'test': {
        singleRun: true
      }
    },
    ...  
  });

  ...
  grunt.loadNpmTasks("grunt-karma");
  ...

  ...
  grunt.registerTask("fe-test", ["karma:test"]);
  ...
};

Did I miss something?

[tnajdek]

Had the same issue (tests running but reporter says 0 out of N). Changed reporter to “dots” now says correctly N out of N.

[bernardolm]

To me, removing `restartOnFileChange: true’ from my karma conf solved this error.