Add tests workflow

Author: silvanocerza

.github/workflows/test.yml

@@ -0,0 +1,31 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        java-version: ["8", "11", "16", "17", "21"]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up JDK
+        uses: actions/setup-java@v3
+        with:
+          java-version: ${{ matrix.java-version }}
+          distribution: "temurin"
+          cache: maven
+
+      - name: Run tests
+        run: mvn test
+        env:
+          IPINFO_TOKEN: ${{ secrets.IPINFO_TOKEN }}