ci: split integration tests by category and shrink the PR matrix

.github/workflows/build.yml

@@ -10,15 +10,19 @@ jobs:
   integration_tests:
     strategy:
       matrix:
-        java: [ 17, 21, 25 ]
+        # Only the oldest and newest supported Java and Kubernetes versions are covered
+        java: [ 17, 25 ]
         # Use the latest versions supported by minikube, otherwise GitHub it will
         # end up in a throttling requests from minikube and workflow will fail.
         # Minikube does such requests only if a version is not officially supported.
-        kubernetes: [ 'v1.34.11', 'v1.35.8', 'v1.36.4', 'v1.37.0' ]
+        kubernetes: [ 'v1.34.11', 'v1.37.0' ]
+        # Matches the integration-tests-<category> profiles in the root pom.xml
+        it-category: [ 'baseapi', 'dependent', 'workflow', 'other' ]
     uses: ./.github/workflows/integration-tests.yml
     with:
       java-version: ${{ matrix.java }}
       kube-version: ${{ matrix.kubernetes }}
+      it-category: ${{ matrix.it-category }}
 
   httpclient-tests:
     strategy:

.github/workflows/integration-tests.yml

@@ -21,58 +21,63 @@
         type: string
         required: false
         default: ''
+      it-category:
+        description: 'Integration test category (baseapi, dependent, workflow, other); all tests if empty'
+        type: string
+        required: false
+        default: ''
 
 jobs:
   integration_tests:
-    name: Integration tests (${{ inputs.java-version }}, ${{ inputs.kube-version }}, ${{ inputs.http-client }})
+    name: Integration tests (${{ inputs.java-version }}, ${{ inputs.kube-version }}, ${{ inputs.http-client }}${{ inputs.it-category != '' && format(', {0}', inputs.it-category) || '' }})
     runs-on: ubuntu-latest
     continue-on-error: ${{ inputs.experimental }}
     timeout-minutes: 120
     env:
       MINIKUBE_VERSION: v1.39.0
     steps:
       - uses: actions/checkout@v7
         with:
           ref: ${{ inputs.checkout-ref }}
       - name: Set up Java and Maven
         uses: actions/setup-java@v6
         with:
           distribution: temurin
           java-version: ${{ inputs.java-version }}
           cache: 'maven'
       # minikube downloads kubelet, kubeadm and kubectl from dl.k8s.io on every start, which
       # regularly times out when many matrix jobs start at once
       - name: Cache Minikube downloads
         uses: actions/cache@v6
         with:
           path: ${{ runner.temp }}/.minikube/cache
           key: minikube-${{ runner.os }}-${{ env.MINIKUBE_VERSION }}-${{ inputs.kube-version }}-none
       - name: Set up Minikube
         id: minikube
         continue-on-error: true
         uses: manusa/actions-setup-minikube@v2.19.0
         with:
           minikube version: ${{ env.MINIKUBE_VERSION }}
           kubernetes version: '${{ inputs.kube-version }}'
           github token: ${{ github.token }}
       - name: Clean up failed Minikube setup
         if: steps.minikube.outcome == 'failure'
         run: sudo -E --preserve-env=HOME,MINIKUBE_HOME "$MINIKUBE_HOME/minikube" delete || true
       - name: Set up Minikube (retry)
         if: steps.minikube.outcome == 'failure'
         uses: manusa/actions-setup-minikube@v2.19.0
         with:
           minikube version: ${{ env.MINIKUBE_VERSION }}
           kubernetes version: '${{ inputs.kube-version }}'
           github token: ${{ github.token }}
 
       - name: "${{inputs.it-category}} integration tests (kube: ${{ inputs.kube-version }} / java: ${{ inputs.java-version }} / client: ${{ inputs.http-client }})"
         run: |
           if [ -z "${{inputs.it-category}}" ]; then
             it_profile="integration-tests"
           else
             it_profile="integration-tests-${{inputs.it-category}}"
           fi
           echo "Using profile: ${it_profile}"
           ./mvnw ${MAVEN_ARGS} -T1C -B install -DskipTests --file pom.xml
           ./mvnw ${MAVEN_ARGS} -T1C -B package -P${it_profile} -Dfabric8-httpclient-impl.name=${{inputs.http-client}} --file pom.xml

pom.xml

@@ -539,6 +539,29 @@
         </plugins>
       </build>
     </profile>
+    <profile>
+      <id>integration-tests-other</id>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-surefire-plugin</artifactId>
+            <configuration>
+              <includes>
+                <include>**/*IT.java</include>
+              </includes>
+              <excludes>
+                <exclude>**/*Test.java</exclude>
+                <exclude>**/*E2E.java</exclude>
+                <exclude>io/javaoperatorsdk/operator/baseapi/**</exclude>
+                <exclude>io/javaoperatorsdk/operator/dependent/**</exclude>
+                <exclude>io/javaoperatorsdk/operator/workflow/**</exclude>
+              </excludes>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
     <!--     Special category of tests. See usage in source code.   -->
     <profile>
       <id>minimal-watch-timeout-dependent-it</id>