Build and test demo apps from PR GH action (#374)

Author: devhawk

.github/workflows/on_pr.yml

@@ -13,4 +13,6 @@ on:
 
 jobs:
   test:
-    uses: ./.github/workflows/test.yml
+    uses: ./.github/workflows/test.yml
+  test-demo-apps:
+    uses: ./.github/workflows/test_demo_apps.yml

.github/workflows/test_demo_apps.yml

@@ -0,0 +1,105 @@
+name: Test Demo Apps
+
+on:
+  workflow_call:
+  workflow_dispatch:
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.version.outputs.version }}
+    steps:
+      - name: Checkout java-transact
+        uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v5
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v5
+
+      - name: Remove local DBOS Maven artifacts
+        run: rm -rf ~/.m2/repository/dev/dbos
+
+      - name: Publish to Maven Local
+        run: ./gradlew publishToMavenLocal
+
+      - name: Get version
+        id: version
+        run: echo "version=$(./gradlew properties -q | grep '^version:' | awk '{print $2}')" >> $GITHUB_OUTPUT
+
+      - name: Upload Maven Local artifacts
+        uses: actions/upload-artifact@v7
+        with:
+          name: dbos-maven-local
+          path: ~/.m2/repository/dev/dbos
+
+  test-demo-apps:
+    needs: publish
+    runs-on: ubuntu-latest
+
+    env:
+      PGPASSWORD: dbos
+      PGUSER: postgres
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - app: java/dbos-starter
+            build_file: app/build.gradle.kts
+          - app: java/widget-store
+            build_file: build.gradle.kts
+          - app: kotlin/dbos-starter
+            build_file: app/build.gradle.kts
+
+    services:
+      postgres:
+        image: postgres:16
+        env:
+          POSTGRES_PASSWORD: dbos
+          POSTGRES_USER: postgres
+          POSTGRES_DB: postgres
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    steps:
+      - name: Set up JDK 17
+        uses: actions/setup-java@v5
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Checkout dbos-demo-apps
+        uses: actions/checkout@v6
+        with:
+          repository: dbos-inc/dbos-demo-apps
+          path: dbos-demo-apps
+
+      - name: Download Maven Local artifacts
+        uses: actions/download-artifact@v7
+        with:
+          name: dbos-maven-local
+          path: ~/.m2/repository/dev/dbos
+
+      - name: Patch ${{ matrix.app }}
+        working-directory: dbos-demo-apps/${{ matrix.app }}
+        run: |
+          VERSION="${{ needs.publish.outputs.version }}"
+          sed -i "s|dev\.dbos:\([^:]*\):[^\"']*|dev.dbos:\1:${VERSION}|g" "${{ matrix.build_file }}"
+          sed -i 's/repositories {/repositories { mavenLocal();/' "${{ matrix.build_file }}"
+
+      - name: Build and test ${{ matrix.app }}
+        working-directory: dbos-demo-apps/${{ matrix.app }}
+        run: ./gradlew build