Karma.conf file as coffee

karma.conf.coffee

# base path, that will be used to resolve files and exclude
basePath = '..'

# list of files / patterns to load in the browser
# chai is from https://github.com/chaijs/chai - the main chai.js file in the root
files = [
    MOCHA
    MOCHA_ADAPTER

    # stubs come first so they can be available when all the units need them
    'test/rtd/lib/*-stubs.js'
    'test/stubs/*.coffee'
    'test/vendor/chai.js'

    # Run setup
    'test/unit/setup/*.coffee'

    # the reason we load unit tests next is because they don't depend on the app. On the contrary,
    # they set mocks ahead of time for the units so they have to be loaded first
    'test/unit/**/*.js'
    'test/unit/**/*.coffee'


    # Models have to load next as they're auto-stubbed by RTD
    'app/models/**/*.js'
    'app/models/**/*.coffee'

    # simulate loading order of meteor folder structure
    'app/lib/**/*.js'
    'app/client/lib/**/*.js'
    'app/server/lib/**/*.js'

    'app/src/client/**/*.coffee'

    # now all the dependencies have been sorted, the app code can be loaded
    'app/**/*.js'
]


# list of files to exclude
exclude = [
    '**/3rd/**/*.js'
    '**/istanbul-middleware-port/**/*'
    'karma.conf.js'
    'app/.meteor/local'
    'app/server/fixture.js'
    'app/packages/**/*'
    'app/public/**/*'
]

preprocessors =
  '**/*.coffee': 'coffee'


coverageReporter =
  type: 'text-summary'
  dir:  'build/reports/coverage/'
  file: 'coverage.txt'

# test results reporter to use
# possible values: 'dots', 'progress', 'junit'
reporters = ['dots', 'coverage']


# web server port
port = 9876


# cli runner port
runnerPort = 9100


# enable / disable colors in the output (reporters and logs)
colors = true


# level of logging
# possible values: LOG_DISABLE || LOG_ERROR || LOG_WARN || LOG_INFO || LOG_DEBUG
logLevel = LOG_DISABLE

# enable / disable watching file and executing tests whenever any file changes
autoWatch = false


# Start these browsers, currently available:
# - Chrome
# - ChromeCanary
# - Firefox
# - Opera
# - Safari (only Mac)
# - PhantomJS
# - IE (only Windows)
browsers = ['PhantomJS']


# If browser does not capture in given timeout [ms], kill it
captureTimeout = 60000


# Continuous Integration mode
# if true, it capture browsers, run tests and exit
singleRun = false

See also: https://gist.github.com/timhaines/a1930aa0136734fd1be2

Awesome, thank you