test java 17 compatability

Author: ldetmer

.github/workflows/unit-tests.yml

@@ -36,3 +36,21 @@ jobs:
       - name: Run tests
         run: |
           ./gradlew clean build jacocoTestReport --stacktrace
+
+  gradle9-java17-test:
+    name: Gradle 9 compatibility test (Java 17)
+    runs-on: ubuntu-latest
+    env:
+      TERM: dumb
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v3
+        with:
+          distribution: 'adopt'
+          java-version: 17
+      - uses: gradle/gradle-build-action@v2
+        with:
+          gradle-version: 7.6.4
+      - name: Run Gradle 9 compatibility test
+        run: |
+          gradle :jib-gradle-plugin:test --tests "*FilesTaskV2Test.testFilesTask_multiProjectComplexService_gradle9" -x jacocoTestReport --stacktrace