Split building and testing in workflow

.github/workflows/build.yml

@@ -19,17 +19,18 @@ jobs:
       - uses: actions/checkout@v4
       - uses: gradle/[email protected]
 
-  gradle:
+  build:
     runs-on: ubuntu-latest
     steps:
 
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Gradle build, test and check
+      - name: Gradle build without tests
         uses: ./.github/workflows/gradle-goal
         with:
-          command: "./gradlew check"
+          # We also compile the test-classes, even though we are skipping the tests
+          command: "./gradlew build testClasses -x test"
 
       - name: Warmup gradle wrapper
         uses: ./.github/workflows/gradle-goal
@@ -42,9 +43,36 @@ jobs:
           name: test-results
           path: '**/build/test-results/test/TEST-*.xml'
 
+      - name: Cache working directory with build results
+        uses: actions/upload-artifact@v3
+        with:
+          name: working-dir-build-cache
+          path: ./
+
       - name: Agent artifact
         uses: actions/upload-artifact@v3
         with:
           name: elastic-otel-javaagent
           path: |
             ./agent/build/libs/elastic-otel-javaagent-*.jar
+
+  test:
+    runs-on: ubuntu-latest
+    needs:
+      - build
+    steps:
+      - name: Download cached build working directory
+        uses: actions/download-artifact@v3
+        with:
+          name: working-dir-build-cache
+          path: ./
+      - name: Run tests
+        uses: ./.github/workflows/gradle-goal
+        with:
+          command: "./gradlew test"
+      - name: Store test results
+        if: success() || failure()
+        uses: actions/upload-artifact@v3
+        with:
+          name: test-results
+          path: '**/build/test-results/test/TEST-*.xml'