Add integration tests with Spring Boot

.github/workflows/integration-tests.yml

@@ -0,0 +1,36 @@
+name: Integration Tests
+
+on: [push, pull_request]
+
+env:
+  MAVEN_ARGS: -B -V -ntp -e -Djansi.passthrough=true -Dstyle.color=always
+
+jobs:
+
+  spring-boot:
+
+    name: Verify with Spring Boot
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: '17'
+
+      - name: Checkout AssertJ
+        uses: actions/checkout@v4
+        with:
+          path: assertj
+      - name: Set AssertJ version
+        run: assertj/mvnw $MAVEN_ARGS -f assertj/pom.xml versions:set -DnewVersion=0.0.0
+      - name: Install AssertJ
+        run: assertj/mvnw $MAVEN_ARGS -f assertj/pom.xml install -DskipTests
+
+      - name: Checkout Spring Boot
+        uses: actions/checkout@v4
+        with:
+          repository: spring-projects/spring-boot
+          path: spring-boot
+      - name: Test Spring Boot
+        run: spring-boot/gradlew -p spring-boot -PassertjVersion=0.0.0 build