8368001: java/text/Format/NumberFormat/NumberRoundTrip.java timed out

[rm-gh-8]

Backporting JDK-8368001: java/text/Format/NumberFormat/NumberRoundTrip.java timed out.

This PR refactors NumberFormat round-trip test to address timeout issues (JDK-8260555) by reducing test scope from ~1000 locales × 4 factories × ~30 inputs to ~25% using JUnit 5 parameterized testing, improving average execution time while maintaining representative coverage through random locale sampling and preserving all critical edge case testing.

For parity with Oracle JDK.

Ran related tests on linux-x64, linux-aarch64, macos-aarch64 and windows-x64:

make test TEST=test/jdk/java/text/Format/NumberFormat/NumberRoundTrip.java

Results attached:

windows-x64-specific-test.log
macos-aarch64-specific-test.log
linux-x64-specific-test.log
linux-aarch64-specific-test.log

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8368001 needs maintainer approval

Issue

• JDK-8368001: java/text/Format/NumberFormat/NumberRoundTrip.java timed out (Bug - P4 - Requested)

Reviewing

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$ git pull https://git.openjdk.org/jdk25u-dev.git pull/346/head

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[bridgekeeper]

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[openjdk]

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[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

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Webrevs

• 00: Full (08f59b5a)

[rm-gh-8]

/approval request for backport of JDK-8368001: java/text/Format/NumberFormat/NumberRoundTrip.java timed out.

This is a test fix.

For parity with Oracle JDK.

[openjdk]

@rm-gh-8
8368001: The approval request has been created successfully.