Change the test to use a custom scheduler so there is better control on when the carrier threads terminates. Also convert test to TestNG so that all test cases can be run in the context of a virtual thread.
------------- Commit messages: - Convert to TestNG and run all tests on a virtual thread - Merge - Change test to use custom scheduler, easier to test reliably Changes: https://git.openjdk.org/jdk/pull/9819/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9819&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8292051 Stats: 153 lines in 2 files changed: 54 ins; 57 del; 42 mod Patch: https://git.openjdk.org/jdk/pull/9819.diff Fetch: git fetch https://git.openjdk.org/jdk pull/9819/head:pull/9819 PR: https://git.openjdk.org/jdk/pull/9819
