zendframework / zend-expressive / 938

97%

Pull #391

travis-ci

Ensure `Application::__invoke()` does not trigger deprecations

Stratigility 1.3 deprecates having an optional `$out` argument to
`__invoke()`. However, `Application::run()` was calling without the
argument, to allow lazy-creation of a final handler if none was injected
at instantiation.

In order to mimic the behavior of `MiddlewarePipe`, this meant testing:

- For a null `$out` argument
- A null return value from `getFinalHandler()`
- Decorating a PSR response with a Stratigility response
- Seeding a Stratigility `FinalHandler` with the decorated response

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