Follow up to c07dff72278fb7f2a3c4c71212a0773a2b25c790.
Actually it is not the cop's fault, but we mistakenly use `^`, `$`, and
`\Z` in much places, the cop doesn't correct those conservatively.
I've checked all those usage and replaced all safe ones.
Generators generate things, but what is meant by 'Stubbing out' might
confuse beginners and non-native English speakers.
While generated tests are stubs that should have an implementation, a
generated model is a valid model that doesn't require any changes.
and update ActionCable guide to describe exception handling usage
# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# On branch master
# Your branch is behind 'origin/master' by 5 commits, and can be fast-forwarded.
#
# Changes to be committed:
# modified: actioncable/CHANGELOG.md
# modified: actioncable/lib/action_cable/connection/base.rb
# modified: actioncable/lib/action_cable/connection/subscriptions.rb
# modified: actioncable/test/connection/subscriptions_test.rb
# modified: guides/source/action_cable_overview.md
#
* You can distinguish connection among others with specific `application_name`
```sql
SELECT application_name FROM pg_stat_activity;
/*
application_name
------------------------
psql
ActionCable-PID-42
(2 rows)
*/
```
* It's possible to customize connection identification with `id` option in `cable.yml`
`ActionCable-PID-#{$$}` is the default value
* Related tests refactoring
* `ActionCable::Server#config.cable` is no mutated anymore inside Redis subscription adapter
That would allow us to test broadcasting made with channel, e.g.:
```ruby
class ChatRelayJob < ApplicationJob
def perform_later(room, msg)
ChatChannel.broadcast_to room, message: msg
end
end
```
To test this functionality we need to know the underlying stream name
(to use `assert_broadcasts`), which relies on `channel_name`.
We had to use the following code:
```ruby
assert_broadcasts(ChatChannel.broadcasting_for([ChatChannel.channel_name, room]), 1) do
ChatRelayJob.perform_now
end
```
The problem with this approach is that we use _internal_ API (we shouldn't care about `channel_name` prefix
in our code).
With this commit we could re-write the test as following:
```ruby
assert_broadcasts(ChatChannel.broadcasting_for(room), 1) do
ChatRelayJob.perform_now
end
```
* Don't reimplement assert_raises
Also test what happens in case there's no explicit rejection.
* Avoid OpenStruct. Remove space beneath private.
* Simplify verification methods for code under test.
* Match documentation with other Rails docs.
Also remove mention of the custom path argument for now.
Unsure how useful that really is.
