8254234 - Add test library stream object builder

[ChrisHegarty]

It is useful to have a test library facility for building stream objects, suitable for deserialization testing. We already have a partial implementation in one of the record serialization tests, move it to the test library for more general use. The implementation remains partial, but can be expanded as and when needed.

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change must be properly reviewed

Testing

	Linux x64	Windows x64	macOS x64
Build	❌ (2/5 failed)	✔️ (2/2 passed)	✔️ (2/2 passed)
Build / test	✔️ (0/0 passed)
Test (tier1)		✔️ (9/9 passed)	✔️ (9/9 passed)

Failed test tasks

• Linux x64 (build hotspot minimal)
• Linux x64 (build hotspot zero)

Issue

• JDK-8254234: Add test library stream object builder

Reviewers

• Roger Riggs (@RogerRiggs - Reviewer)

Download

$ git fetch https://git.openjdk.java.net/jdk pull/561/head:pull/561
$ git checkout pull/561

[bridgekeeper]

👋 Welcome back chegar! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@ChrisHegarty The following label will be automatically applied to this pull request:

• core-libs

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[mlbridge]

Webrevs

• 01: Full - Incremental (e47b08a)
• 00: Full (557c0a4)

[RogerRiggs]

Thanks for the updates.

[openjdk]

@ChrisHegarty This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8254234: Add test library stream object builder

Reviewed-by: rriggs

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 6 new commits pushed to the master branch:

• 2bbf8a2: 8245543: Cgroups: Incorrect detection logic on some systems (still reproducible)
• aaa0a2a: 8254297: Zero and Minimal VMs are broken with undeclared identifier 'DerivedPointerTable' after JDK-8253180
• 7e80c98: 8254261: fix javadocs in jdk.test.lib.Utils
• d4b5dfd: 8253857: Shenandoah: Bugs in ShenandoahEvacOOMHandler related code
• e9c1905: 8253740: [PPC64] Minor interpreter cleanup
• b1448da: 8253900: SA: wrong size computation when JVM was built without AOT

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[ChrisHegarty]

/integrate

[openjdk]

@ChrisHegarty Since your change was applied there have been 35 commits pushed to the master branch:

• 4184959: 8252374: Add a new factory method to concatenate a sequence of BodyPublisher instances into a single publisher.
• 05459df: 8253765: C2: Control randomization in StressLCM and StressGCM
• 6620b61: 8254573: Shenandoah: Streamline/inline native-LRB entry point
• a6c23b7: 8253923: C2 doesn't always run loop opts for compilations that include loops
• dfe8ba6: 8254320: Shenandoah: C2 native LRB should activate for non-cset objects
• 295a44a: 8254558: Remove unimplemented Arguments::do_pd_flag_adjustments
• 0fab73e: 8254560: Shenandoah: Concurrent Strong Roots logging is incorrect
• 638f910: 8254559: Remove unimplemented JVMFlag::get_locked_message_ext
• 0ec1d63: 8253117: Replace HTML tables in javadoc summaries with CSS grid elements
• 54bbe76: 8251544: CTW: C2 fails with assert(no_dead_loop) failed: dead loop detected
• ... and 25 more: https://git.openjdk.java.net/jdk/compare/2bc8bc572233b4bb59554f2da064d8feef23635a...master

Your commit was automatically rebased without conflicts.

Pushed as commit aad3cf4.

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