Sam Brannen
dbe89abd7b
Since the introduction of the Spring TestContext Framework in 2007, application contexts have always been stored in the context cache in a "running" state. However, leaving a context running means that components in the context may continue to run in the background. For example, JMS listeners may continue to consume messages from a queue; scheduled tasks may continue to perform active work, etc.; and this can lead to issues within a test suite. To address such issues, this commit introduces built-in support for pausing application contexts when they are not in use and restarting them if they are needed again. Specifically, the TestContextManager now marks a test's application context as "unused" after execution of the test class has ended, and the underlying ContextCache then "stops" the application context if no other test class is currently using the context. When a TestExecutionListener later attempts to obtain a paused application context -- for example, for a subsequent test class that shares the same application context -- the ContextCache ensures that context is restarted before returning it. See https://github.com/spring-projects/spring-boot/issues/28312 See gh-35171 Closes gh-35168
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