Shows incorrect failed message with closed Generator

[ssi-anik]

Q	A
PHPUnit version	9.5.25
PHP version	8.1.11
Installation Method	Composer

Summary

When trying assertCount with a generator, a mismatch between the expected and generator count will show an invalid message. The reason is that the Generator is closed during the evaluation, and cannot get the count when generating the message.

Current behavior

Failed asserting that actual size 0 matches expected size EXPECTED_VALUE

How to reproduce

public function testGenerator () {
    $items = (function () {
        foreach (range(1, 10) as $item) {
            yield $item;
        }
    })();

    $this->assertCount(11, $items);
}

Expected behavior

Failed asserting that actual size ACTUAL_SIZE matches expected size EXPECTED_VALUE

[sebastianbergmann]

Duplicate of #4271.