.travis.yml

#
# this is a java project using maven
language: java
#
# Java 8
#
# to avoid Unsupported major.minor version 52.0 we need to specify the JDK to be used
# https://stackoverflow.com/a/40208648/1497139
jdk: openjdk8
# support for headless Swing tests and other gui stuff
# see https://docs.travis-ci.com/user/gui-and-headless-browsers/
#
# as of  2017-08 precise is only available as an option
#
# uncomment the following lines to use xvfb with precise
dist: xenial
#before_script:
#  - "export DISPLAY=:99.0"
#  - "sh -e /etc/init.d/xvfb start"
#  - sleep 3 # give xvfb some time to start
#
# 2017-08-20: trusty xvfb configuration
# see https://github.com/travis-ci/travis-ci/issues/8262#issue-251064430
#
# set the X11 Display variable as a global environment variable
env:
  global:
    - DISPLAY=:99
# start xvfb using the the DISPLAY port
before_script:
  - "/sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- $DISPLAY -ac -screen 0 1280x1024x24"
  - sleep 3
before_install: sudo apt-get install xvfb
# switch off gpg handling
# and split install and test phase of maven since xvfb will only
# be available in test phase
# let's first compile without tests
install: mvn install -D skipTests=true -Dgpg.skip=true
# do the tests separately after xvfb has been installed
script: mvn test
# we need a few extra packages to be installed
# 1. for Java FX support the latest oracle-java8 needs to be installed
# 2. xvfb is needed to run GUI tests and avoid headless mode
addons:
  apt:
    packages:
      #- oracle-java8-installer
      - xvfb
      - openjfx
      - mesa-utils