RFR: 8356985: Use "stdin.encoding" in Console's read*() methods [v3]

[Naoto Sato]

On Wed, 21 May 2025 16:53:53 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> Indeed there *are* `stdout.encoding` tests in `test/jdk/java/io/Console`, yet none<sup>1</sup> that thoroughly tests them with `expect` and a dedicated (mock) `CharsetProvider` as you did here. FWIW, I really liked your new test using a mock `CharsetProvider` in combination with `expect`, hence my question for doing same for stdout and stderr too.
>> 
>> For the record, AFAICT, there are no tests for `stderr.encoding`.
>> 
>> <sup>1</sup> There is `script.exp`, but it tests `sun.stdout.encoding`, not `stdout.encoding`.
>
> Actually providing mock charset was a workaround of not having public method for getting the input encoding. I think it would be an overkill to introduce a new public method because it will not be used much, as most cases are suffice with the existing one (Console is used for interactive user enviornment, and I don't believe users would like to see different characters displayed for the input).

> There is script.exp, but it tests sun.stdout.encoding, not stdout.encoding.

It is addressed in this PR

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PR Review Comment: https://git.openjdk.org/jdk/pull/25271#discussion_r2100763095