Merge pull request DSpace#3060 from tdonohue/github_ci

Add CI to GitHub via Actions (based on Travis CI config)

.codecov.yml

@@ -4,6 +4,13 @@
 # Can be validated via instructions at:
 # https://docs.codecov.io/docs/codecov-yaml#validate-your-repository-yaml
 
+# Tell Codecov not to send a coverage notification until (at least) 2 builds are completed
+# Since we run Unit & Integration tests in parallel, this lets Codecov know that coverage
+# needs to be merged across those builds
+codecov:
+  notify:
+    after_n_builds: 2
+
 # Settings related to code coverage analysis
 coverage:
   status:

.github/workflows/build.yml

@@ -0,0 +1,69 @@
+# DSpace Continuous Integration/Build via GitHub Actions
+# Concepts borrowed from
+# https://docs.github.com/en/free-pro-team@latest/actions/guides/building-and-testing-java-with-maven
+name: Build
+
+# Run this Build only for pushes / PRs to main branch
+on:
+  push:
+    branches: main
+  pull_request:
+    branches: main
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    env:
+      # Give Maven 1GB of memory to work with
+      # Suppress all Maven "downloading" messages in Travis logs (see https://stackoverflow.com/a/35653426)
+      # This also slightly speeds builds, as there is less logging
+      MAVEN_OPTS: "-Xmx1024M -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=warn"
+    strategy:
+      # Create a matrix of two separate configurations for Unit vs Integration Tests
+      # This will ensure those tasks are run in parallel
+      matrix:
+        include:
+          # NOTE: Unit Tests include deprecated REST API v6 (as it has unit tests)
+          - type: "Unit Tests"
+            mvnflags: "-DskipUnitTests=false -Pdspace-rest"
+          # NOTE: ITs skip all code validation checks, as they are already done by Unit Test job.
+          #  - enforcer.skip     => Skip maven-enforcer-plugin rules
+          #  - checkstyle.skip   => Skip all checkstyle checks by maven-checkstyle-plugin
+          #  - license.skip      => Skip all license header checks by license-maven-plugin
+          #  - xml.skip          => Skip all XML/XSLT validation by xml-maven-plugin
+          - type: "Integration Tests"
+            mvnflags: "-DskipIntegrationTests=false -Denforcer.skip=true -Dcheckstyle.skip=true -Dlicense.skip=true -Dxml.skip=true"
+      # Do NOT exit immediately if one matrix job fails
+      # This ensures ITs continue running even if Unit Tests fail, or visa versa
+      fail-fast: false
+    # These are the actual CI steps to perform per job
+    steps:
+      # https://github.com/actions/checkout
+      - name: Checkout codebase
+        uses: actions/checkout@v1
+
+      # https://github.com/actions/setup-java
+      - name: Install JDK 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+
+      # https://github.com/actions/cache
+      - name: Cache Maven dependencies
+        uses: actions/cache@v2
+        with:
+          # Cache entire ~/.m2/repository
+          path: ~/.m2/repository
+          # Cache key is hash of all pom.xml files. Therefore any changes to POMs will invalidate cache
+          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+          restore-keys: ${{ runner.os }}-maven-
+
+      # Run parallel Maven builds based on the above 'strategy.matrix'
+      - name: Run Maven ${{ matrix.type }}
+        env:
+          TEST_FLAGS: ${{ matrix.mvnflags }}
+        run: mvn install -B -V -P-assembly -Pcoverage-report $TEST_FLAGS
+
+      # https://github.com/codecov/codecov-action
+      - name: Upload coverage to Codecov.io
+        uses: codecov/codecov-action@v1