Add the ``--duration`` option to the test suite

[Eclips4]

Feature or enhancement

Proposal:

I propose adding a new option --duration to our test suite. This would print the duration of each test that has run during the test suite, to the file that the user provides.
So actual use case looks like that:
./python.exe -m test --duration tmp/stats -R 3:3
It's can be useful as the --slowest option, which already exists.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-119050: Implement --duration option for the test suite CLI #119051
• gh-119050: Add type hints to libregrtest/results.py #119144
• gh-119050: Add XML support to libregrtest refleak checker #119148
• [3.13] gh-119050: Add type hints to libregrtest/results.py (GH-119144) #119156
• [3.12] gh-119050: Add type hints to libregrtest/results.py (GH-119144) #119157
• [3.13] gh-119050: Add XML support to libregrtest refleak checker (GH-119148) #119270
• [3.12] gh-119050: Add XML support to libregrtest refleak checker (#119148) #119272

[vstinner]

Why not reusing the JUnit output?

[Eclips4]

Why not reusing the JUnit output?

JUnit cannot be used in a "hunt refleaks" mode. Although, using JUnit for this purpose would be great, but I do not see an easy solution to making it work with the "hunt refleaks" mode :(

[vstinner]

JUnit cannot be used in a "hunt refleaks" mode. Although, using JUnit for this purpose would be great, but I do not see an easy solution to making it work with the "hunt refleaks" mode :(

We should write JUnit data into a file, and then load the file to write the XML. Not store these data into memory.