Configuring TravisCI and Coveralls for a node.js project

First include your coveralls token in.

.coveralls.yml

service_name: travis-pro
repo_token: your_token

We were already using mocha. And to get the coverage data I’ve added istanbul plus the coveralls module for actually submitting that data to coveralls.

package.json

"devDependencies": {
    "mocha": "~1.19.0",
    "istanbul": "^0.2.10",
    "coveralls": "^2.10.0"
  }

Makefile

In the Makefile, I’ve added a build step called test-coveralls

test-coveralls:
	@NODE_ENV=test  ./node_modules/.bin/istanbul cover ./node_modules/mocha/bin/_mocha */test/*.js --report lcovonly -- -R spec -t 30000

Which, when run will generate coverage data and save it in

./coverage/lcov.info

.travis.yml

Now finally your .travis.yml should look something like bellow. The services and the database creation will all depend on your project and what it needs to run.

The second line inside script: will submit the coverage data to coveralls.

language: node_js

node_js:
  - "0.10.28"

services:
  - mongodb
  - redis-server

script:
  - make test-coveralls
  - cat ./coverage/lcov.info | ./node_modules/.bin/coveralls --verbose

before_script:
  - mysql -e 'create database db_test'

That’s it!