feat: add kube-api-test support to the test starter - #326
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe test starter adds ChangesKube API test starter support
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🔵 Low · up to The opt-in kube-api-test support may prevent Spring context startup when scalar settings are supplied through environment variables. The impact is limited to users enabling this feature, but the configuration behavior should receive explicit owner follow-up. Sequence Diagram(s)sequenceDiagram
participant SpringContext
participant KubeAPITestAutoConfiguration
participant KubeAPITestConfiguration
participant KubeAPIServer
participant Fabric8Config
SpringContext->>KubeAPITestAutoConfiguration: Import test auto-configuration
KubeAPITestAutoConfiguration->>KubeAPITestConfiguration: Import test beans before OperatorAutoConfiguration
KubeAPITestConfiguration->>KubeAPIServer: Build and start with KubeAPIServerConfig
KubeAPIServer-->>KubeAPITestConfiguration: Provide kubeconfig
KubeAPITestConfiguration->>Fabric8Config: Expose the server client configuration
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Actionable comments posted: 1
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Inline comments:
In
`@starter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/KubeAPITestConfiguration.java`:
- Around line 28-39: Update KubeAPITestConfiguration’s builder setup to parse
environment-backed scalar values before build(): convert offlineMode and
waitForEtcdHealthCheckOnStartup to Boolean and startupTimeout to Integer before
passing them to the corresponding with-methods, while preserving null handling;
alternatively use a kube-api-test version that performs this conversion.
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📒 Files selected for processing (15)
starter-test/README.mdstarter-test/pom.xmlstarter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/EnableKubeAPITest.javastarter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/KubeAPITestAutoConfiguration.javastarter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/KubeAPITestConfiguration.javastarter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/KubeAPITestProperties.javastarter-test/src/test/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/EnableKubeAPITestPropertyTests.javastarter-test/src/test/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/EnableKubeAPITestTests.javastarter-test/src/test/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/KubeAPITestConfigurationIntegrationTest.javastarter-test/src/test/java/testsupport/KubeAPITestIntegrationApplication.javastarter-test/src/test/java/testsupport/KubeAPITestOptOutApplication.javastarter-test/src/test/resources/crd/custom-service-v1.ymlstarter-test/src/test/resources/crd/global-custom-service-v1.ymlstarter/pom.xmlstarter/src/test/java/io/javaoperatorsdk/operator/springboot/starter/AutoConfigurationIntegrationTest.java
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- starter/pom.xml
- starter/src/test/java/io/javaoperatorsdk/operator/springboot/starter/AutoConfigurationIntegrationTest.java
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Pull request overview
Adds opt-in Spring Boot test-starter support for running integration tests against a Spring-managed Fabric8 kube-api-test API server, avoiding JUnit-managed lifecycle conflicts and avoiding kubeconfig file modification.
Changes:
- Introduces
@EnableKubeAPITestplus auto-configuration that starts/stopsKubeAPIServerwithin the Spring context and exposes an in-memory Fabric8Config. - Adds integration/property tests, CRD test resources, and module documentation demonstrating configuration and behavior.
- Adjusts Maven dependencies: removes
kube-api-test-client-injectfromstartertests and addskube-api-testtostarter-test.
Reviewed changes
Copilot reviewed 15 out of 15 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| starter/src/test/java/io/javaoperatorsdk/operator/springboot/starter/AutoConfigurationIntegrationTest.java | Removes prior integration test that relied on JUnit @EnableKubeAPIServer(updateKubeConfigFile = true). |
| starter/pom.xml | Drops kube-api-test-client-inject test dependency. |
| starter-test/src/test/resources/crd/global-custom-service-v1.yml | Adds CRD fixture for global.sample.javaoperatorsdk group. |
| starter-test/src/test/resources/crd/custom-service-v1.yml | Adds CRD fixture for sample.javaoperatorsdk group. |
| starter-test/src/test/java/testsupport/KubeAPITestOptOutApplication.java | Test support app overriding KubeAPIServer/Config beans for opt-out scenarios. |
| starter-test/src/test/java/testsupport/KubeAPITestIntegrationApplication.java | Test support app wiring a sample reconciler and CRD transformers for integration coverage. |
| starter-test/src/test/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/KubeAPITestConfigurationIntegrationTest.java | Integration tests validating CRD application, client wiring, operator startup, and kubeconfig update default. |
| starter-test/src/test/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/EnableKubeAPITestTests.java | Tests default behavior (no CRD apply) and preserving explicit client configuration. |
| starter-test/src/test/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/EnableKubeAPITestPropertyTests.java | Tests that explicit javaoperatorsdk.crd.apply-on-startup property is preserved. |
| starter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/KubeAPITestProperties.java | Adds configuration properties under javaoperatorsdk.test.kube-api. |
| starter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/KubeAPITestConfiguration.java | Defines beans for KubeAPIServerConfig, Spring-managed KubeAPIServer, and in-memory Config. |
| starter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/KubeAPITestAutoConfiguration.java | Auto-configuration entry point imported by the enabling annotation. |
| starter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/EnableKubeAPITest.java | New opt-in annotation to enable kube-api-test support and map applyCrdsOnStartup. |
| starter-test/README.md | Adds usage and configuration documentation for the new feature. |
| starter-test/pom.xml | Adds io.fabric8:kube-api-test dependency to the test starter. |
Suppressed comments (1)
starter-test/src/main/java/io/javaoperatorsdk/operator/springboot/starter/test/kubeapitest/KubeAPITestConfiguration.java:47
KubeAPIServerwill be created (and started viainitMethod) even when a user provides their own Fabric8Configbean. That can spawn an unused kube-api-test process; consider treating an explicitConfigas an opt-out and skipping server creation in that case.
@Bean(initMethod = "start", destroyMethod = "stop")
@ConditionalOnMissingBean(KubeAPIServer.class)
public KubeAPIServer kubeAPIServer(KubeAPIServerConfig config) {
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Contributor
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Thank you @IniasP , will take a look this week! |
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Summary
Adds Spring-managed
kube-api-testsupport to the test starter.Motivation
I wanted to use kube-api-server for my integration tests because I ran into JOSDK issue #3331. However, I noticed using Fabric8’s
@EnableKubeAPIServerJUnit extension withupdateKubeConfigFile = true, as the integration test in the starter currently does, runs into lifecycle issues when there are multiple integration tests. The JUnit extension is responsible for the server lifecycle, while Spring manages the application context and Kubernetes client. That separation can conflict with Spring’s cached context lifecycle when multiple test classes reuse the Spring context.Also, modifying the process user's kubeconfig is unsafe and unnecessary IMO, and to be avoided if not needed. This helps achieve that.
Behavior
@EnableKubeAPITeststarts and stops akube-api-testserver within the Spring context.Config.applyCrdsOnStartupmaps tojavaoperatorsdk.crd.apply-on-startupand defaults tofalse.javaoperatorsdk.test.kube-api.kube-api-testare disabled.@EnableMockOperatorbehavior remains unchanged.The feature is fully opt-in, so existing applications and tests remain unaffected. It's supposed to be a
kube-api-serverparallel to@EnableMockOperator.Sample usage:
Summary by CodeRabbit
New Features
@EnableKubeAPITestsupport for Spring Boot tests against a managed Kubernetes API server.Documentation
Tests