RFR: JDK-8272853: improve `JavadocTester.runTests`

[Hannes Wallnöfer]

On Thu, 6 Jan 2022 20:31:42 GMT, Jonathan Gibbons <jjg at openjdk.org> wrote:

> Please review a medium simple test-only fix to improve the `JavadocTester` `runTests` methods.
> 
> Currently, there are two overloads: one to invoke no-args test methods, and another to invoke test methods with args, such as a method-specific `Path`.  This latter one is slightly inconvenient to use, since it requires the boilerplate use of a function to create the arguments.
> 
> The first overload is updated in a backwards compatible way, to examine the parameters of methods annotated with `@Test`, and to recognize common patterns: namely no-args methods and `(Path)` methods, without the need for any additional function.  The second overload is retained by backwards compatibility, until if and when we decide it is no longer required.
> 
> In addition, two new overloads are added, similar to the first two, but with the addition of an extra parameter to decide which methods should be invoked. This is primarily a debugging aid.  Using these overloads, it is easy to specify, on the command line used to run the test, the methods to be executed.
> 
> A new test is added to test the new functionality.

Sorry for letting this linger for so long. I asked some questions in the comments, but that was not meant to block the PR. The changes look good to me.

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

Marked as reviewed by hannesw (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/6983