* Integration tests: Memoize request handler as well
This is useful to send HTTP requests (or their PSR-7 equivalents)
through the entire application's middleware stack (instead of
talking to specific controllers, which should be considered
implementation detail).
* Add tests for CSRF token check
* Integration tests: Configure vendor path
Now that this is possible, make the easy change...
* Implement middleware for CSRF token verification
This fixes a rather large oversight in Flarum's codebase, which was that
we had no explicit CSRF protection using the traditional token approach.
The JS frontend was actually sending these tokens, but the backend did
not require them.
* Accept CSRF token in request body as well
* Refactor tests to shorten HTTP requests
Multiple tests now provide JSON request bodies, and others copy cookies
from previous responses, so let's provide convenient helpers for these.
* Fixed issue with tmp/storage/views not existing, this caused tmpname to notice.
Fixed csrf test that assumed an access token allows application access, which is actually api token.
Improved return type hinting in the StartSession middleware
* Using a different setting key now, so that it won't break tests whenever you re-run them once smtp is set.
Fixed, badly, the test to create users etc caused by the prepareDatabase flushing all settings by default.
* added custom view, now needs translation
This creates a dedicated test suite for integration tests. All of them
can be run independently, and there is no order dependency - previously,
all integration tests needed the installer test to run first, and they
would fail if installation failed.
Now, the developer will have to set up a Flarum database to be used by
these tests. A setup script to make this simple will be added in the
next commit.
Small tradeoff: the installer is NOT tested in our test suite anymore,
only implicitly through the setup script. If we decide that this is a
problem, we can still set up separate, dedicated installer tests which
should probably test the web installer.
