fix(phpunit): tests are not successful anymore due to a missing method

[nxtpge]

Describe the Bug

PHPUnit tests with PHP above or equal to version 8.1 are not successful anymore preventing contributions (pull requests) to be validated.

It is caused by the fact that PHPUnit misses the PHPUnit\Framework\TestCase::setOutputCallback() method which was available in version 9.6 but removed in 10.1.

Steps to Reproduce

• Follow the 5 steps of the "Getting started" section of the contributing guidelines
• Run :

composer test-no-coverage

Expected Behavior

Tests are successful.

Current Behavior

Command's output:

There were 4 errors:

1) PhpOffice\PhpWordTests\PhpWordTest::testSave
Error: Call to undefined method PhpOffice\PhpWordTests\PhpWordTest::setOutputCallback()

/path/to/repository/PHPWord/tests/PhpWordTests/PhpWordTest.php:125

2) PhpOffice\PhpWordTests\Writer\ODTextTest::testSavePhpOutput
Error: Call to undefined method PhpOffice\PhpWordTests\Writer\ODTextTest::setOutputCallback()

/path/to/repository/PHPWord/tests/PhpWordTests/Writer/ODTextTest.php:106

3) PhpOffice\PhpWordTests\Writer\RTFTest::testSavePhpOutput
Error: Call to undefined method PhpOffice\PhpWordTests\Writer\RTFTest::setOutputCallback()

/path/to/repository/PHPWord/tests/PhpWordTests/Writer/RTFTest.php:107

4) PhpOffice\PhpWordTests\Writer\Word2007Test::testSetGetUseDiskCaching
Error: Call to undefined method PhpOffice\PhpWordTests\Writer\Word2007Test::setOutputCallback()

/path/to/repository/PHPWord/tests/PhpWordTests/Writer/Word2007Test.php:172

Context

• PHP Version: 8.1.18
• PHPWord Version: 1.0.0
• PHPUnit Version: 10.1.3

[PowerKiKi]

Fixed by #2404