Values from data provider are not shown for failed test

[mvorisek]

Q	A
PHPUnit version	10.5.3
PHP version	any
Installation Method	Composer

Summary

PHPUnit 10.x does currently shows only the data set # /wo dumping the data set values in the test header/output.

Currently, the developer has to go to the test code to even get a rough idea what the failed test is really about.

With a complex providers, it is even hard to tell by looking into the code what values were passed by a given data set # - example: https://github.com/atk4/ui/blob/5.0.0/tests/DemosTest.php#L305 - it is basically impossible.

I am reporting this as a bug, as PHPUnit 9.x output has/had the data set values dumped.

Current behavior

...
There were 2 failures:

1) Atk4\Ui\Tests\DemosHttpTest::testDemoJsonResponse with data set #3
Failed asserting that '{\n
,,,

How to reproduce

Any test with data provider.

Expected behavior

expected/PHPUnit 9.x output:

...
There were 2 failures:

1) Atk4\Ui\Tests\DemosHttpTest::testDemoJsonResponse with data set #3 ('_unit-test/exception.php?__at...json=1')
Failed asserting that '{\n

[sebastianbergmann]

Test.php

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

final class Test extends TestCase
{
    public static function provider(): array
    {
        return [
            [1, '2', 3.0, true],
        ];
    }

    /**
     * @dataProvider provider
     */
    public function testOne(int $a, string $b, float $c, bool $d): void
    {
        $this->assertTrue(false);
    }
}

PHPUnit 10

1) Test::testOne with data set #0
Failed asserting that false is true.

PHPUnit 9

1) Test::testOne with data set #0 (1, '2', 3.0, true)
Failed asserting that false is true.