Whenever you are sending emails in integration tests using the `:test`
delivery method you need to make sure that
`ActionMailer::Base.deliveries` is reset after every test. This piece of
boilerplate code is present in all my applications that send
emails. Let's have `ActionDispatch::IntegrationTest` reset the
deliveries automatically.

Use a URL instead of an URL everywhere

Add missing CHANGELOG for regression fix in #18155 which fixes #13387

[ci skip]

A cookie value is incorrect if value contains an escapable string in Rails 5 ActionController::TestCase

Multiple cookie values should be separated by '; ' according
to RFC 6265, section 5.4.4[1].

[1]: https://tools.ietf.org/html/rfc6265#section-5.4

The `cookies` hash isn't updated with the value generated by the output
from `to_header` so it wasn't testing anything. Rendering the cookie
value in the controller makes sure that the escaping is actually working.

Merge branch 'should-escape-cookie' of https://github.com/ma2gedev/rails into ma2gedev-should-escape-cookie

generate mailer views in Rails API

This is a follow-up to ea70c295 to bring back the assertion error
location information provided by minitest.

This reverts commit 0db31058.

Closes #23686.

Conflicts:
	railties/test/application/test_runner_test.rb

It's possible that the `result.location` returned by minitest is outside
the test file itself. For example in the case of mocha. This resulted in
bad rerun snipptets:

```
bin/rails test app/models/deliveries/delivery.rb:103
```

Let's always use the first line of the failed test-case in our rerun
snippet. We can display the line number of the assertion error elsewhere.

Fix small typo in i18n guide [ci skip]

Add `#on_weekday?` method to `Date`, `Time`, and `DateTime`.

Corrected secret_key_base

View files is necessary to send mail, it should be generated even Rails API.
Fixes #23617

mark as #:nodoc:  [ci skip]

remove `active_support.test_order` from environment file

Remove the method already overridden by private method

can’t be instantiate directly or may be no need for doc.

Update dalli gem

Remove `const_missing` which fallback to deprecated `NEVER_UNPERMITTED_PARAMS`

`NEVER_UNPERMITTED_PARAMS` is deprecated in Rails 4.2. See #15933.

Inject Rails related configuration through Railtie

The `WorkerTest`'s `Receiver` is imporsonating an `ActionCable::Connection::Base`, but
just delegates the logger to `ActionCable.logger`.

This creates a mismatch as the connection requires the logger to be a
`TaggedLoggerProxy`'ied logger, while the server doesn't.

Thus to ensure an exception isn't raised when the worker tries to call `tag`
other tests have to assign a proxied logger to their test server.

Instead of forcing change on other tests, have Receiver adhere to the connection
contract and use a `TaggedLoggerProxy`.

As a consequence remove more setup from the tests.

Instead of depending on ApplicationCable::Connection being defined at initialize
we should inject it in the Railtie.

Thus we can kill more setup in the tests too.

We were explicitly referencing Rails.root in ActionCable::Server::Configuration.initialize,
thereby coupling ourselves to Rails.

Instead add `app/channels` to Rails' app paths and assign the existent files
to `channel_paths`.

Users can still append to those load paths with `<<` and `push` in `config/application.rb`.

This means we can remove the custom `Dir` lookup in `channel_paths` and the Rails
and root definitions in the tests.

[ci skip] line_statistics added to README

Link to data nil test

if data attribute is nil it is ignored

if value is nil the pair is ignored

if value is nil it is skipped

Improved test for  data attr nil

dalli 2.7.6 fixed deprecation warning caused by using
`Rack::Session::Abstract::ID`.
This commit suppress warnings on ActionPack tests.

See:
https://github.com/petergoldstein/dalli/commit/9874a7c3ad67eb1e31cafba0a51966db4f0c7e42