RFR: 8306711: Improve diagnosis of `IntlTest` framework [v2]

[Naoto Sato]

On Tue, 25 Apr 2023 22:08:09 GMT, Justin Lu <jlu at openjdk.org> wrote:

>> Please review changes to the IntlTest (test framework) class. 
>> 
>> These changes include
>> - Logging the actual exception + stack trace. Previously, the test framework would throw `InvocationTargetException` but hide the actual underlying exception of the failing test unless the test class was ran with -nothrow.
>> - Sorting the tests, ensuring for any given run, the tests are ran in the same order. (In [JDK-8305853](https://bugs.openjdk.org/browse/JDK-8305853) it was discovered that on Windows, the test framework would execute tests in a random order each time).
>> - Improving output.
>
> Justin Lu has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Revert changes that may affect extending test classes
>  - Add back toHexString (used by some tests)

Looks good, with minor nits:

test/jdk/java/text/testlib/IntlTest.java line 84:

> 82:         for (Method testMethod : testsToRun) {
> 83:             int oldCount = errorCount;
> 84:             writeTestName(testMethod.getName());

Could cache the method name for later uses

test/jdk/java/text/testlib/IntlTest.java line 134:

> 132:         indentLevel--;
> 133:         writeTestResult(errorCount);
> 134: 

Would this mean the final result is only written with `nothrow` option?

test/jdk/java/text/testlib/IntlTest.java line 228:

> 226:     protected int getErrorCount() {
> 227:         return errorCount;
> 228:     }

No need to move the method

-------------

PR Review: https://git.openjdk.org/jdk/pull/13655#pullrequestreview-1400872160
PR Review Comment: https://git.openjdk.org/jdk/pull/13655#discussion_r1177142651
PR Review Comment: https://git.openjdk.org/jdk/pull/13655#discussion_r1177141497
PR Review Comment: https://git.openjdk.org/jdk/pull/13655#discussion_r1177142257