At the request of the Spring Boot team, ApplicationContextFailureProcessor
implementations are now loaded via the spring.factories mechanism
instead of supporting a single processor registered via subclasses of
AbstractTestContextBootstrapper.
This makes the retrieval and handling of processors internal to
DefaultCacheAwareContextLoaderDelegate, while simultaneously supporting
multiple processors that can be registered by anyone (i.e., not
limited to projects that implement custom TestContextBootstrappers).
See gh-28826
Closes gh-29387
Prior to this commit, the AOT runtime support in the Spring TestContext
Framework (TCF) relied on the MergedContextConfiguration for a given
test class being the same as during the AOT processing phase. However,
this is not always the case. For example, Spring Boot "disables"
selected `ContextCustomizer` implementations during AOT runtime
execution.
See 0f325f98b5
To address that, this commit ensures that context caching works
properly during AOT runtime execution even if the
MergedContextConfiguration differs from what was produced during the
AOT processing phase. Specifically, this commit introduces
AotMergedContextConfiguration which is a MergedContextConfiguration
implementation based on an AOT-generated ApplicationContextInitializer.
AotMergedContextConfiguration wraps the MergedContextConfiguration
built during AOT runtime execution.
Interactions with the ContextCache are performed using the
AotMergedContextConfiguration; whereas, the ApplicationContext is
loaded using the original MergedContextConfiguration.
This commit also introduces a ContextCustomizerFactory that emulates
the ImportsContextCustomizerFactory in Spring Boot's testing support.
BasicSpringJupiterImportedConfigTests uses @Import to verify that the
context customizer works, and AotIntegrationTests has been updated to
execute BasicSpringJupiterImportedConfigTests after test classes whose
MergedContextConfiguration is identical during AOT runtime execution.
Without the fix in this commit, BasicSpringJupiterImportedConfigTests
would fail in AOT runtime mode since its ApplicationContext would be
pulled from the cache using an inappropriate cache key.
Closes gh-29289
Prior to this commit, there was no declarative mechanism for a custom
TestExecutionListener to be registered as a default
TestExecutionListener.
This commit introduces support for discovering default
TestExecutionListener implementations via the SpringFactoriesLoader
mechanism. Specifically, the spring-test module declares all core
default TestExecutionListeners under the
org.springframework.test.context.TestExecutionListener key in its
META-INF/spring.factories properties file, and third-party frameworks
and developers can contribute to the list of default
TestExecutionListeners in the same manner.
- AbstractTestContextBootstrapper uses the SpringFactoriesLoader to
look up the class names of all registered default
TestExecutionListeners and sorts the instantiated listeners using
AnnotationAwareOrderComparator.
- DefaultTestContextBootstrapper and WebTestContextBootstrapper now
rely on the SpringFactoriesLoader mechanism for finding default
TestExecutionListeners instead of hard coding fully qualified class
names.
- To ensure that default TestExecutionListeners are registered in the
correct order, each can implement Ordered or declare @Order.
- AbstractTestExecutionListener and all default TestExecutionListeners
provided by Spring now implement Ordered with appropriate values.
- Introduced "copy constructors" in MergedContextConfiguration and
WebMergedContextConfiguration
- SpringFactoriesLoader now uses AnnotationAwareOrderComparator
instead of OrderComparator.
Issue: SPR-11466
