Add test support to record async events, with JUnit Jupiter caveat #30020
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cc @odrotbohm draft as this should probably be slated for 6.1.0 |
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This commit modifies the way the `@RecordApplicationEvents` annotation works in tests, allowing for capture of events from threads other than the main test thread (async events) and for the assertion of captured event from a separate thread (e.g. when using `Awaitility`). This is done by switching the `ApplicationEventsHolder` to use an `InheritedThreadLocal`. There is a mutual exclusion between support of asynchronous events vs support of JUnit5 parallel tests with the `@TestInstance(PER_CLASS)` mode. As a result, we favor the former and now `SpringExtension` will invalidate a test class that is annotated (or meta-annotated, or enclosed-annotated) with `@RecordApplicationEvents` AND `@TestInstance(PER_CLASS)` AND `@Execution(CONCURRENT)`. See spring-projectsgh-29827 Closes spring-projectsgh-30020
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Prior to this commit, the SpringExtension looked up the TestInstance.Lifecycle and ExecutionMode using TestContextAnnotationUtils; however, using TestContextAnnotationUtils is problematic since the TestInstance.Lifecycle and ExecutionMode can be configured globally via configuration parameters instead of locally via the @testinstance and @execution annotations. This commit addresses these issues by looking up the TestInstance.Lifecycle and ExecutionMode via JUnit Jupiter's ExtensionContext which takes into account both global and local configuration. See gh-30020
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This commit modifies the way the
@RecordApplicationEventsannotationworks in tests, allowing for capture of events from threads other than
the main test thread (async events) and for the assertion of captured
event from a separate thread (e.g. when using
Awaitility).This is done by switching the
ApplicationEventsHolderto use anInheritedThreadLocal.There is a mutual exclusion between support of asynchronous events vs
support of JUnit5 parallel tests with the
@TestInstance(PER_CLASS)mode. As a result, we favor the former and now
SpringExtensionwillinvalidate a test class that is annotated (or meta-annotated, or
enclosed-annotated) with
@RecordApplicationEventsAND@TestInstance(PER_CLASS)AND@Execution(CONCURRENT).Closes gh-29827