Update the test suite to run with a wider range of PHP versions

[villfa]

This PR fixes all deprecations from PHPUnit with minimal changes.
That way the tests can be run from PHP 5.3 up to PHP 8.3.

1) Hamcrest\UtilTest::testCheckAllAreMatchersFailsForPrimitive
The @expectedException, @expectedExceptionCode, @expectedExceptionMessage, and @expectedExceptionMessageRegExp annotations are deprecated. They will be removed in PHPUnit 9. Refactor your test to use expectException(), expectExceptionCode(), expectExceptionMessage(), or expectExceptionMessageMatches() instead.

2) Hamcrest\UtilTest::testCreateMatcherArrayLeavesMatchersUntouched
assertInternalType() is deprecated and will be removed in PHPUnit 9. Refactor your test to use assertIsArray() instead.

3) Hamcrest\UtilTest::testCreateMatcherArrayWrapsPrimitiveWithIsEqualMatcher
assertInternalType() is deprecated and will be removed in PHPUnit 9. Refactor your test to use assertIsArray() instead.

4) Hamcrest\UtilTest::testCreateMatcherArrayDoesntModifyOriginalArray
assertInternalType() is deprecated and will be removed in PHPUnit 9. Refactor your test to use assertIsArray() instead.

5) Hamcrest\UtilTest::testCreateMatcherArrayUnwrapsSingleArrayElement
assertInternalType() is deprecated and will be removed in PHPUnit 9. Refactor your test to use assertIsArray() instead.

[aik099]

FYI: I've used https://github.com/Yoast/PHPUnit-Polyfills in my other projects and this way the test suite only uses the latest PHPUnit methods, which are polyfilled for older PHPUnit versions.

PR looks good to me.

[villfa]

FYI: I've used https://github.com/Yoast/PHPUnit-Polyfills in my other projects and this way the test suite only uses the latest PHPUnit methods, which are polyfilled for older PHPUnit versions.

True.
On my own projects I use Symfony's PHPUnit bridge.

However, I chose not to add a new dependency because I believed the pull request would be better received that way, especially since it didn't require many changes.

[villfa]

Hi @aik099,
Do you think it's ok to merge this PR as is?

[aik099]

Merging, thank you @villfa .