RFR: 8378164: test/jdk/java/net/httpclient/http3/*.java: convert tests that use ITestContext to JUnit [v3]

[Volkan Yazici]

On Fri, 20 Feb 2026 20:32:05 GMT, Daniel Fuchs <dfuchs at openjdk.org> wrote:

>> Similar to https://github.com/openjdk/jdk/pull/29786 - this time with HTTP/3 tests.
>
> Daniel Fuchs has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Update test/jdk/java/net/httpclient/http3/PostHTTP3Test.java
>    
>    Co-authored-by: Andrey Turbanov <turbanoff at gmail.com>
>  - Update test/jdk/java/net/httpclient/http3/GetHTTP3Test.java
>    
>    Co-authored-by: Andrey Turbanov <turbanoff at gmail.com>

test/jdk/java/net/httpclient/http3/H3DataLimitsTest.java line 228:

> 226:     }
> 227: 
> 228:     @BeforeAll

I see TestNG `{Before,After}Test` tags converted to JUnit `{Before,After}All` tags, whereas their JUnit equivalents should have been `{Before,After}Each`. Is this intentional?

Note that in this particular file, there are multiple test methods. Before this PR, each was getting its own bootstrapped environment. Now they all will share the same. While it is good that they share resources, could it be that we incorrectly remove certain test assumptions?

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PR Review Comment: https://git.openjdk.org/jdk/pull/29824#discussion_r2843050567