Its use is already causes an issue with Phpstan. It uses interfaces marked as internal by Phpunit, and it will not work with Phpunit 12. It is more complicated than needed. This PR corrects all these problems. It also corrects a handful of other problems that will show up with Phpunit 12. Only tests are changed - no source code.
With PhpUnit 10 came the ability to use Php attributes rather than doc-block annotations for things like "data provider". PhpUnit 11 deprecates the use of annotations, and PhpUnit 12 will not not permit their use. Since PhpUnit 11 requires Php8.2+, we cannot adopt it as long as we support Php8.1, which will continue to be the case for some time. However, there is no penalty for early adoption.
Php-cs-fixer can use:
```
'php_unit_attributes' => ['keep_annotations' => false],
```
This allows us to run `composer fix` to automate all the needed changes. No manual changes were needed for any of the test members.
With this change, PhpUnit 9 can no longer be used with the test suite. File composer.json is updated to reflect that reality, and phpunit9.xml.dist, which has been supplied in case anyone needed to use PhpUnit 9, is no longer required, and is thus deleted. For now, PhpUnit 11 is not being added as a possibility.
No source code is changed in this PR.
While we might never be able to have 100% of our code strict, we can at
the very least do it for all of our tests. This ensures that our tests
are using our API with the types as intended by the test author, and not
silently be cast to what our API requires.
* Coverage for Helper/Samples
I was perplexed by the fact that Helper/Samples seemed to be entirely uncovered when running the test suite, since I know all the samples are run as part of the test. I think that what must be happening is that the Helper code is invoked mostly as part of a Data Provider (and therefore not counted), not as part of the test proper (which would count). So, this change adds a small number of tests which result in Samples being 100% covered.
Covering one statement was tricky - simulating the inability to create a test directory. Mocking, a technique I have not used before, solves this problem admirably.
* Suggestions From Mark Baker
Tests changed from assertEquals to assertSame.
Added @covers annotation to test class.
Validate parameter for method being mocked.
oleibman
Adrien Crivelli
oleibman