Github action test matrix

Author: oliemansm

.github/workflows/gradle.yml

@@ -1,26 +1,36 @@
-# This workflow will build a Java project with Gradle
-# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
-
-name: Java CI with Gradle
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
+name: CI
+on: [push, pull_request]
 
 jobs:
-  build:
-
+  validation:
+    name: Gradle Wrapper Validation
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
-      with:
-        java-version: 1.8
-    - name: Grant execute permission for gradlew
-      run: chmod +x gradlew
-    - name: Build with Gradle
-      run: ./gradlew build
+      - uses: actions/checkout@v2
+      - uses: gradle/wrapper-validation-action@v1
+  test:
+    name: Test run
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        java: [8, 11, 15]
+    needs: validation
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup Java
+        uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.java }}
+      - name: Make gradlew executable (non-Windows only)
+        if: matrix.os != 'windows-latest'
+        run: chmod +x ./gradlew
+      - name: Gradle Check (non-Windows)
+        if: matrix.os != 'windows-latest'
+        run: ./gradlew --info check
+      - name: Gradle Check (Windows)
+        if: matrix.os == 'windows-latest'
+        shell: cmd
+        run: gradlew --info check