Support for decorating `runTest` function

[albertcht]

In my use case, I'd like to provide a convenient way for developers to run their test functions in coroutine containers like below:

class FooTest extends TestCase
{
    use RunTestsInCoroutine;

    // this test function is expected to be executed inside coroutine container
    public function testFoo()
    {
        //...
    }
}

For my current implementation, I try to use setName function to proxy the real test function. By this way the test function will be proxied and wrapped in coroutine container in the proxied function.

final protected function runTest(): mixed
{
    if ($this->shouldRunInCoroutine()) {
        $this->realTestName = $this->name();
        parent::setName('runTestsInCoroutine');
    }

    return parent::runTest();
} 

final protected function runTestsInCoroutine(...$arguments)
{
    parent::setName($this->realTestName);

    Coroutine\run(
        fn () => $this->{$this->realTestName}(...$arguments)
    );
}

However, I found this approach is not going to work any more because runTest function is marked private in: 8f0f820

I was wondering what the best practice is to proxy the test function to decorate the test functions.

[sebastianbergmann]

The runTest() method was declared final protected and marked as @internal before, so changing it to private is not a backward compatibility break. That being said, I consider your use case outside the scope of this project, sorry.