[Pull request #1687:](junit-team/junit#1687) Mark ThreadGroups created by FailOnTimeout as daemon groups
In JUnit 4.13 ([pull request #1517](junit-team/junit4#1517)) an attempt was
made to fix leakage of the ThreadGroup instances created when a test is run with a timeout. That
change explicitly destroyed the ThreadGroup that was created for the time-limited test. Numerous
people reported problems that were caused by explicitly destroying the ThreadGroup.
In this change, the code was updated to call ThreadGroup.setDaemon(true) instead of destroying the
ThreadGroup.
Pull request $1691: Only create ThreadGroups if FailOnTimeout.lookForStuckThread is true.
In JUnit 4.12 ([pull request #742](junit-team/junit4#742)) the Timeout
Rule was updated to optionally display the stacktrace of the thread that appears to be stuck
(enabled on an opt-in basis by passing true to Timeout.Builder.lookForStuckThread(boolean)).
When that change was made, time-limited tests were changed to start the new thread in a new
ThreadGroup, even if the test did not call lookForStuckThread(). This subtle change in
behavior resulted in visible behavior changes to some tests (for example, tests of code that uses
java.beans.ThreadGroupContext).
In this change, the code is updated to only create a new ThreadGroup if the caller calls
Timeout.Builder.lookForStuckThread(true). Tests with timeouts that do not make this call will
behave as they did in JUnit 4.11 (and more similar to tests that do not have a timeout). This
unfortunately could result in visible changes of tests written or updated since the 4.12
release. If this change adversely affects your tests, you can create the Timeout rule via the
builder and call Timeout.Builder.lookForStuckThread(true).
This change fixes an issue where AssumptionViolatedException instances could not be serialized
if they were created with a constructor that takes in an org.hamcrest.Matcher instance (these
constructors are used if you use one of the assumeThat() methods in org.junit.Assume).
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Bumps junit from 4.13 to 4.13.2.
Release notes
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Changelog
Sourced from junit's changelog.
Commits
05fe2a6
[maven-release-plugin] prepare release r4.13.2ff57344
Add build for JDK 17-ea02aaa01
Improve check that thread is stoppede9a75f4
Merge test for exception type and messaged27ad52
Rename DelegateStatement to DelegatingStatementb83dc2e
Better name for test that stops statement527f3a3
Replace InfiniteLoop with RunForASecond2db6394
Tidy up FailOnTimeoutTest64634e1
Update 4.13.2 release notes to document pull 1654f8ee412
Fix serialization of AssumptionViolatedException (#1654)Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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