GuzzleHttp\Tests\Psr7\FunctionsTest::testStopsCopyToStreamWhenWriteFails PHP Метод

    public function testStopsCopyToStreamWhenWriteFails()
    {
        $s1 = Psr7\stream_for('foobaz');
        $s2 = Psr7\stream_for('');
        $s2 = FnStream::decorate($s2, ['write' => function () {
            return 0;
        }]);
        Psr7\copy_to_stream($s1, $s2);
        $this->assertEquals('', (string) $s2);
    }