.travis.yml

# use container
sudo: false
language: java

env:
  global:
    # Check if version is a SNAPSHOT - grep returns 0 if the pattern is found, otherwise 1
    - IS_SNAPSHOT=$(grep -A 1 "<artifactId>kryo.*</artifactId>" pom.xml | grep SNAPSHOT)
    - SONATYPE_USERNAME=martin.grotzke
    - secure: kCOLgEveEDprSL3fOBeCc1/nmHVYEcNh/lRRWiJywFehOzKBTBF40pAWX7JtsWUPG8aPKGYFEE4sjYd+DF2DRknbuB2ZfAEgs9Xp9h5Mx1KztJYNiCfEnLciBBRDXA7t1M3TLKyT3ptA+Kk307cH2QHv9sUUnhnf0IofJyQhQvA=
  
jdk:
  #- openjdk7
  - oraclejdk8

before_install:
  # required for testing jdk 11
  - wget https://github.com/sormuras/bach/raw/master/install-jdk.sh -O $TRAVIS_BUILD_DIR/install-jdk.sh
  - chmod u+x $TRAVIS_BUILD_DIR/install-jdk.sh

install:
  # compile and test java 8
  - mvn -B -V clean test

script:
  # compile tests with java 8
  - jdk_switcher use oraclejdk8
  - mvn -B clean install
  # test java 9 (only available via oraclejdk9)
  - jdk_switcher use oraclejdk9
  - mvn -v && mvn -B test
  # test java 11
  # see also https://docs.travis-ci.com/user/languages/java/#using-java-10-and-later
  # and https://github.com/sormuras/bach#install-jdksh (because default travis docs didn't work)
  - export JAVA_HOME=$HOME/openjdk11
  - $TRAVIS_BUILD_DIR/install-jdk.sh --feature 11 --target $JAVA_HOME
  - mvn -v && mvn -B test
  # install and publish snapshot with java 8
  # not via `after_success` but directly in `script`, since a failure would be silently ignored in `after_success`, which
  # is documented in https://docs.travis-ci.com/user/customizing-the-build#Breaking-the-Build
  - jdk_switcher use oraclejdk8
  - if [ $TRAVIS_BRANCH = "master" ] && [ $TRAVIS_PULL_REQUEST = "false" ] && [ $IS_SNAPSHOT ]; then
      mvn -v && mvn -B -P requireSnapshot -DskipTests=true deploy --settings build/settings-sonatype.xml;
    else
      echo "Skipping deployment...";
    fi
  #- mvn -B -P requireSnapshot -DskipTests=true deploy --settings .settings.xml

cache:
  directories:
    - $HOME/.m2