co-mocha/testem.json

{
  "framework": "mocha",
  "src_files": [
    "node_modules/chai/chai.js",
    "node_modules/es6-promise/dist/es6-promise.js",
    "co-mocha.js",
    "test.js"
  ],
  "launchers": {
    "Node": {
      "command": "node --harmony node_modules/.bin/istanbul cover node_modules/mocha/bin/_mocha -- -R tap --require lib/co-mocha.js --bail",
      "protocol": "tap"
    }
  },
  "launch_in_dev": [
    "Node"
  ]
}