Test Runner swallows output made during test

[sebastianbergmann]

Test.php

<?php declare(strict_types=1);
use PHPUnit\Framework\TestCase;

final class Test extends TestCase
{
    public function testOne(): void
    {
        $v = true;

        var_dump($v);

        $this->assertTrue($v);
    }
}

PHPUnit 10.0.15

$ phpunit Test.php
PHPUnit 10.0.15 by Sebastian Bergmann and contributors.

Runtime:       PHP 8.2.3

.                                                                   1 / 1 (100%)

Time: 00:00.014, Memory: 4.00 MB

OK (1 test, 1 assertion)

PHPUnit 9.6.5

$ phpunit --verbose Test.php
PHPUnit 9.6.5 by Sebastian Bergmann and contributors.

Runtime:       PHP 8.2.3

.                                                                   1 / 1 (100%)bool(true)


Time: 00:00.048, Memory: 4.00 MB

OK (1 test, 1 assertion)