It's possible for developers toadd a custom driver and then call it
using `driven_by`. Because we were only skipping `register` for
`:rack_test` that meant any custom driver would attempt to be registered
as well.
The three listed here are special because Rails registers them with
special options. If you're registering your own custom driver then you
don't want to separately register that driver.
Fixes#29688
drivers.
When using `driver_by` with capybara-webkit or poltergeist,
SystemTesting::Driver will register the driver while passing
`screen_size` and `options` parameteres.
`options` could contain any option supported by the underlying driver.
Capybara drivers can handle some options such like `url`.
### before
```
# test/test_helper.rb
Capybara.register_driver :remote_chrome do |app|
Capybara::Selenium::Driver.new(app, browser: :chrome, url: "http://example.com/wd/hub")
end
# test/application_system_test_case.rb
class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
driven_by :remote_chrome
end
```
### after
```
# test/application_system_test_case.rb
class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
driven_by :selenium, using: :chrome, screen_size: [1400, 1400], options: {url: "http://chrome:4444/wd/hub"}
end
```
Previously the system test subclasses would call `driven_by` when the
app booted and not again when the test was initialized which resulted in
the driver from whichever class was called last to be used in tests.
In rails/rails#28144 the `driven_by` method was changed to run `use` on
setup and `reset` on teardown. While this was a viable fix this really
pointed to the problem that system test `driven_by` was a global
setting, rather than a per-class setting.
To alieviate this problem calling the driver should be done on an
instance level, rather than on the global level. I added an `initialize`
method to `SystemTestCase` which will call `use` on the superclass
driver. Running the server has been moved to `start_application` so that
it only needs to be called once on boot and no options from `driven_by`
were being passed to it.
This required a largish rewrite of the tests. Each test needs to utilize
the subclass so that it can properly test the drivers.
`ActionDispatch::SystemTestCase` shouldn't be called directly anymore.
Since using a browser is only for selenium it doesn't really make sense
to have a separate class for handling it there. This brings a lot of the
if/else out of the main SystemTestCase class and into the Driver class
so we can abstract away all that extra work.
* Move system tests back into Action Pack
* Rename `ActionSystemTest` to `ActionDispatch::SystemTestCase`
* Remove private base module and only make file for public
`SystemTestCase` class, name private module `SystemTesting`
* Rename `ActionSystemTestCase` to `ApplicationSystemTestCase`
* Update corresponding documentation and guides
* Delete old `ActionSystemTest` files
2017-02-20 15:07:35 -05:00
Renamed from actionsystemtest/test/cases/driver_test.rb (Browse further)
