RFR: 7903981: Support easy way to use current class name for test actions [v4]

[Christian Stein]

On Tue, 8 Apr 2025 18:45:28 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Christian Stein has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Base main entry-point name computation on file name
>
> test/smartActionArgs/optAuto/p/Test3.java line 35:
> 
>> 33: 
>> 34: public class Test3 {
>> 35:     private static final boolean expectDollar = false; // opt-auto, i.e. in
> 
> What is this for?

Will be removed.

> test/smartActionArgs/optAuto/p/Test3.java line 47:
> 
>> 45:                 case "--test.src":
>> 46:                 case "--test.classes":
>> 47:                 case "--test.class.path":
> 
> Command line options with "." look pretty odd, they can be mistaken for source files.
> Typically, the embedded delimiter is "-" (hyphen).  Though jtreg may have its own convention.
> 
> The command line (@run) for the test only checks the first of these.

The `Test3.java` file is an almost 1:1 copy of the existing `Test.java` file in the parent directory. The conventions and assertions are inherited; with their original reasoning.

As those aren't interesting here, I'll reduce the logic of this new test to an empty `main()` method block. We only care for the correct expansion of `${test.main.class}` resulting in invoking the associated program.

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PR Review Comment: https://git.openjdk.org/jtreg/pull/257#discussion_r2034509364
PR Review Comment: https://git.openjdk.org/jtreg/pull/257#discussion_r2034509167