Add --compact option to only list test files with failures

[niels-numbers]

Description:

In large test suites, the default PHPUnit output can become overwhelming, especially when multiple tests fail and full stack traces are printed.

Feature Request:

Introduce a --compact (or similar) CLI option that suppresses detailed test output and instead prints a concise list of test classes (or files) that contain one or more failing tests.

Example desired output:

user:/home$ phpunit --compact
PHPUnit 9.6.22 by Sebastian Bergmann and contributors.

.....................................W.........................  63 / 367 ( 23%)
..................W....................W....................... 126 / 367 ( 51%)
..............F................................................ 189 / 367 ( 76%)
..............................FFFFF............................ 252 / 252 (100%)

Time: 00:40.492, Memory: 46.00 MB

The following test classes contain failing tests:
- Tests\Feature\LoginTest
- Tests\Unit\UserModelTest

Tests: 252, Assertions: 937, Errors: 6, Warnings: 3.

This option would be useful during TDD, CI pipelines, and quick failure reviews, helping developers focus on which areas need attention without being flooded by verbose traces.

Is this something that could be considered?

[samlitowitz]

I opened a PR, #6201, with a best guess based on the initial ask by @iwasherefirst2. Any feedback or direction with respect to the functionality or behavior requirements would be welcome here.

[sebastianbergmann]

I do not think that this should be added.