Install

npm install karma-jasmine

yarn add karma-jasmine

karma-jasmine

Adapter for the Jasmine testing framework.

Installation

 npm install karma-jasmine --save-dev

Configuration

 // karma.conf.js
module.exports = function(config) {
  config.set({
    frameworks: ['jasmine'],
    files: [
      '*.js'
    ]
  })
}

If you want to run only some tests whose name match a given pattern you can do this in the following way

 $ karma start &
$ karma run -- --grep=<pattern>

where pattern is either a string (e.g --grep=#slow runs tests containing "#slow") or a Regex (e.g --grep=/^(?!.*#slow).*$/ runs tests not containing "#slow").

You can also pass it to karma.config.js:

 module.exports = function(config) {
  config.set({
    // ...
    client: {
      args: ['--grep', '<pattern>'],
      // ...
    }
  })
}

If you want to pass configuration options directly to jasmine you can do this in the following way

 module.exports = function(config) {
  config.set({
    client: {
      jasmine: {
        random: true,
        seed: '4321',
        oneFailurePerSpec: true,
        failFast: true,
        timeoutInterval: 1000
      }
    }
  })
}

Debug by URL

Failing tests print a debug URL with ?spec=. Use it with --no_single_run
and paste it into your browser to focus on a single failing test.

Sharding

By setting config.client.shardIndex and config.client.totalShards, you can
run a subset of the full set of specs. Complete sharding support needs to be
done in the process that calls karma, and would need to support test result
integration across shards.

Custom spec filter

Providing a custom spec filter is also supported.

Example:

 // Users are able to set a custom specFilter themselves

jasmine.getEnv().configure({
  specFilter: function (spec) {
    return spec.getFullName() === 'spec that succeeds'
  }
})

describe('spec', () => {
  it('that fails', () => {
    fail('This spec should not run!')
  })

  it('that succeeds', () => {
    expect(1).toBe(1)
  })
})