RFR: 7903324: Improve per-class reporting of JUnit tests, in .jtr file

[Jonathan Gibbons]

On Mon, 26 Sep 2022 15:29:38 GMT, Jonathan Gibbons <jjg at openjdk.org> wrote:

>> Improve per-class reporting of JUnit tests by using a custom `TestExecutionListener` in `JUnitRunner`.
>
> src/share/classes/com/sun/javatest/regtest/agent/JUnitRunner.java line 182:
> 
>> 180:         @Override
>> 181:         public void executionFinished(TestIdentifier identifier, TestExecutionResult result) {
>> 182:             System.out.println(identifier.getDisplayName() + ": " + result.getStatus());
> 
> Which `System` stream is better? `out`, or `err` ?

Maybe `PrintingListener` should have a constructor which takes a `PrintStream` or `PrintWriter`, so that we only get to reference the `System` stream once, when the listener is created...

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PR: https://git.openjdk.org/jtreg/pull/127