rspec-rails 4.0 release blog post

source/blog/2019-05-11-rspec-rails-4-0-has-been-released.md

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+---
+title: RSpec Rails 4.0 has been released!
+author: Benoit Tigeot, Jon Rowe and Phil Pirozhkov
+---
+
+RSpec Rails 4.0 has been released recently! Given our commitment to
+[semantic versioning](http://semver.org/), this update come with 
+breaking changes for people that are using Rails below 4.2. If we 
+did introduce any bugs, please let us know, and we'll get 
+a patch release out with a fix ASAP.
+
+RSpec continues to be a community-driven project with contributors
+from all over the world. This release includes 258 commits and 56
+merged pull requests from 27 different contributors!
+
+Thank you to everyone who helped make this release happen!
+
+## Notable Changes
+
+RSpec Rails was release with full support and many improvements for 
+Rails 6.
+
+### Breaking changes
+
+This version no longer support Ruby bellow 2.3. We soft support
+Rails 4.2 but we encourage you to use rspec-rails with Rails 5
+at least.
+
+### JRuby support
+
+We very happy to support JRuby on this new release. You can now use
+`rspec-rails` with Rails 5.2 and 6 and JRuby.
+
+### Support for Action Cable
+
+Using a [channel spec][1] it will be easy to test your Action Cable
+channels. A `channels spec` is a thin wrapper for an
+`ActionCable::Channel::TestCase`, and includes all of the behavior
+and assertions that it provides, in addition to RSpec's own 
+behavior and expectations.
+
+It also includes helpers from `ActionCable::Connection::TestCase`
+to make it possible to test connection behavior.
+
+### Support for Action Mailbox
+
+Rails 6 came with [Action Mailbox][2]. We can now test them using
+`:mailbox` flag.
+
+```ruby
+```
+
+TODO: We do no have feature test for this...
+
+### Improvements on generators
+
+If you use generators, there is some improvements:
+- No more Ruby 1.9 hash syntax in file generated
+- Scaffold generator generates request specs instead of 
+controller spec
+- New [generators][3] available (channel, generator, mailbox...)
+
+### Choose which Active Job `queue_adapteur` in system specs
+
+Some people want to run Active Job with a specific queue. In system
+specs you can now choose your desired queue:
+
+```ruby
+before do
+  ActiveJob::Base.queue_adapter = :inline
+end
+```
+
+### Silent log with Puma
+
+By default Puma will not print starting logs anymore when you are
+running system specs.
+
+### Ability to disable Active Record
+
+Some people use Rails without database connection. They do not need
+`ActiveRecord`. You can now choose to disable it in your RSpec config:
+`config.use_active_record = false`
+
+### Version sync between RSpec gems
+
+`rspec-rails` no longer follow the version of other RSpec gems, that
+means that `rspec-rails` will ask at least rspec-core, 
+rspec-expectations, rspec-mocks and rspec-support at version 3.9.0.
+
+## Stats:
+
+* **Total Commits**: 258
+* **Merged pull requests**: 56
+* **27 contributors**: Andrew White, Anton Rieder, Benoit Tigeot, Jon Rowe,
+David Revelo, Giovanni Kock Bonetti, Ignatius Reza, James Dabbs, Joel AZEMAR,
+John Hawthorn, Jonathan Rochkind, Kieran O'Grady, Moshe Kamensky,
+OKURA Masafumi, Olle Jonsson, Pedro Paiva, Phil Pirozhkov, Penelope Phippen,
+Seb Jacobs, Tanbir Hasan, Viacheslav Bobrov, Vladimir Dementyev, Xavier Shay,
+alpaca-tc, pavel, ta1kt0me
+
+## Docs
+
+### API Docs
+
+* [rspec-rails](/documentation/4.0/rspec-rails/)
+
+### Cucumber Features
+
+* [rspec-rails](https://relishapp.com/rspec/rspec-rails/v/4-0/)
+
+## Release Notes
+
+### 4.0.0 / 2020-03-24
+[Full Changelog](https://github.com/rspec/rspec-rails/compare/v3.9.1...v4.0.0)
+
+Enhancements:
+
+* Adds support for Rails 6. (Penelope Phippen, Benoit Tigeot, Jon Rowe, #2071)
+* Adds support for JRuby on Rails 5.2 and 6
+* Add support for parameterised mailers (Ignatius Reza, #2125)
+* Add ActionMailbox spec helpers and test type (James Dabbs, #2119)
+* Add ActionCable spec helpers and test type (Vladimir Dementyev, #2113)
+* Add support for partial args when using `have_enqueued_mail`
+  (Ignatius Reza, #2118, #2125)
+* Add support for time arguments for `have_enqueued_job` (@alpaca-tc, #2157)
+* Improve path parsing in view specs render options. (John Hawthorn, #2115)
+* Add routing spec template as an option for generating controller specs.
+  (David Revelo, #2134)
+* Add argument matcher support to `have_enqueued_*` matchers. (Phil Pirozhkov, #2206)
+* Switch generated templates to use ruby 1.9 hash keys. (Tanbir Hasan, #2224)
+* Add `have_been_performed`/`have_performed_job`/`perform_job` ActiveJob
+  matchers (Isaac Seymour, #1785)
+* Default to generating request specs rather than controller specs when
+  generating a controller (Luka Lüdicke, #2222)
+* Allow `ActiveJob` matchers `#on_queue` modifier to take symbolic queue names. (Nils Sommer, #2283)
+* The scaffold generator now generates request specs in preference to controller specs.
+  (Luka Lüdicke, #2288)
+* Add configuration option to disable ActiveRecord. (Jon Rowe, Phil Pirozhkov, Hermann Mayer, #2266)
+*  Set `ActionDispatch::SystemTesting::Server.silence_puma = true` when running system specs.
+  (ta1kt0me, Benoit Tigeot, #2289)
+
+Bug Fixes:
+
+* `EmptyTemplateHandler.call` now needs to support an additional argument in
+  Rails 6. (Pavel Rosický, #2089)
+* Suppress warning from `SQLite3Adapter.represent_boolean_as_integer` which is
+  deprecated. (Pavel Rosický, #2092)
+* `ActionView::Template#formats` has been deprecated and replaced by
+  `ActionView::Template#format`(Seb Jacobs, #2100)
+* Replace `before_teardown` as well as `after_teardown` to ensure screenshots
+  are generated correctly. (Jon Rowe, #2164)
+* `ActionView::FixtureResolver#hash` has been renamed to `ActionView::FixtureResolver#data`.
+  (Penelope Phippen, #2076)
+* Prevent `driven_by(:selenium)` being called due to hook precedence.
+  (Takumi Shotoku, #2188)
+* Prevent a `WrongScopeError` being thrown during loading fixtures on Rails
+  6.1 development version. (Edouard Chin, #2215)
+* Fix Mocha mocking support with `should`. (Phil Pirozhkov, #2256)
+* Restore previous conditional check for setting `default_url_options` in feature
+  specs, prevents a `NoMethodError` in some scenarios. (Eugene Kenny, #2277)
+* Allow changing `ActiveJob::Base.queue_adapter` inside a system spec.
+  (Jonathan Rochkind, #2242)
+* `rails generate generator` command now creates related spec file (Joel Azemar, #2217)
+* Relax upper `capybara` version constraint to allow for Capybara 3.x (Phil Pirozhkov, #2281)
+* Clear ActionMailer test mailbox after each example (Benoit Tigeot, #2293)
+
+Breaking Changes:
+
+* Drops support for Rails below 5.0
+* Drops support for Ruby below 2.3
+
+[1]: https://relishapp.com/rspec/rspec-rails/v/4-0/docs/channel-specs
+[2]: https://edgeguides.rubyonrails.org/action_mailbox_basics.html
+[3]: https://relishapp.com/rspec/rspec-rails/v/4-0/docs/generators