.travis.yml

branches:
  only:
    - master
    - /^greenkeeper/.*$/

language: node_js
node_js:
  - node
os:
  - linux

cache:
  npm: true
  directories:
    # we also need to cache folder with Cypress binary
    - ~/.cache
  override:
    - npm ci
    - npm run cy:verify

addons:
  chrome: stable
  # Cypress (the test runner we're using) needs libgconf-2.so.4
  # Error description & the solution can be found at ihttps://github.com/cypress-io/cypress/issues/4069#issuecomment-488315675
  apt:
    packages:
    - libgconf-2-4

script:
  - node ./check-geogebra-apps-version.js || travis_terminate 1
  - npm run lint || travis_terminate 1

  # The Cypress tests randomly fail with
  #   "CypressError: Timed out retrying: cy.trigger() failed because this element: <canvas ...>
  #    is being covered by another element: <div ...>"
  #
  # e.g. see this log: https://travis-ci.com/ComFreek/polynomial-interpolation-web-gui/builds/124511686
  #
  # Hence retry multiple times on failure (3 per default)
  - travis_retry npm test
  - kill $(jobs -p) || true

deploy:
  provider: pages
  local-dir: src
  skip-cleanup: true
  github-token: $GITHUB_PAGES_DEPLOYMENT_TOKEN
  keep-history: true
  on:
    branch: master
  target-branch: gh-pages