How to set up Travis CI with multiple languages

My project has a Python/Django backend and a JS/Vue frontend like below:

├── backend
│   ├── api
│   │   ├── tests                               
├── daemon                                                          
│   ├── frontend
│   │   ├── test

The idea is to run each test suite in a matrix' job, one for Python/Django tests and the other for JS ones:

matrix:
  include:
    - language: python
      python: 
        - 3.4
      before_install:
        - cd backend/
      install: 
        - pip install -r requirements.txt
      script:
        - python manage.py test

    - language: node_js
      node_js:
        - 4.8
      before_install:
        - cd daemon/frontend
      install:
        - yarn install
      script:
        - yarn test

notifications:
  email: false

See also

• TravisCI config from my project and TravisCI build
• How do Build Stages work? official doc

I used this .yml:

language: java
jdk:
    - oraclejdk8
node_js: "0.10"
install: "npm install"
script: "npm test"

On a Travis Java build environment, you can use nvm to manage Node.js runtimes:

.travis.yml

language: java

jdk:
  - oraclejdk8

env:
  - NODE_VERSION="0.12"

before_install:
  - nvm install $NODE_VERSION

If your Node version is very recent, you might have to update nvm too.

To update nvm, write this in your .travis.yml:

before_install:
  - wget https://raw.githubusercontent.com/creationix/nvm/v0.31.0/nvm.sh -O ~/.nvm/nvm.sh
  - source ~/.nvm/nvm.sh
  - nvm install 5 # for Node v5
  - node --version

The above example shows how to first update to nvm v0.31, to then obtain Node v5.

It seems to be possible now to run several languages in one .travis.yml file using the jobs:include feature. As an example, my Github repo is arranged as follows:

project/ - top-level github directory
project/backend - Python backend
project/backend/tests - Python tests
project/android/AppName - Android app
project/ios/AppName - iOS app

Here is the .travis.yml, which runs tests in Python, Java, and Objective-C:

jobs:
  include:
    - language: python
      python: 2.7
      before_script:
        - cd backend/tests
      script:
        - python -m unittest discover

    - language: android
      dist: trusty
      jdk: oraclejdk8
      android:
        components:
          - tools
          - android-25
          - build-tools-25.0.3
      before_script:
        - cd android/AppName
      script:
        - ./gradlew build connectedCheck

    - language: objective-c
      os: osx
      osx_image: xcode8.3
      before_script:
        - cd ios/AppName
      script:
        - xcodebuild -workspace AppName.xcworkspace -scheme AppName
          -destination 'platform=iOS Simulator,name=iPhone 7,OS=10.3' build test

notifications:
  email:
    - [email protected]

It seems you can build as many different configurations as you like using this feature, by treating each entry in the matrix as a top level config. Of course, if you have any parameters you want to set that apply to all languages, you can do that at the top level, as I do here with the notifications:email section.

When it is all set up, then on each build, you get something like this. Boom.