Now that I'm on a computer I can repost my twitter reply in case anyone
comes across this and wonders the same thing. Ref
https://twitter.com/PierreHedkvist/status/931139262426296321
<https://www.google.com/url?q=https%3A%2F%2Ftwitter.com%2FPierreHedkvist%2Fstatus%2F931139262426296321&sa=D&sntz=1&usg=AFQjCNFTvgqoUDpS6n9cIB-Yl8RGFJeWhg>
Adding a feature to set the screen size per-test won't work because the
drivers are initialized when the test class is initialized and not the test
itself. That said, generally, I think you'd be testing system tests for
mobile in their own test class or perhaps in a group of tests so I suggest
writing something like this:
```
# test/application_system_test_case.rb
class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
driven_by :selenium, using: :chrome, screen_size: [ 1400, 1400 ]
end
class MobileSystemTestCase < ActionDispatch::SystemTestCase
driven_by :selenium, using: :chrome, screen_size: [ 400, 800 ], options:
{ whatever other options you need for mobile to work }
end
```
In this case your mobile tests would inherit from the mobile test class and
the rest of your tests would inherit from the other one.
On Wednesday, November 15, 2017 at 6:46:39 AM UTC-5, Pierre Hedkvist wrote:
>
> Hi,
>
> I have a feature request regarding the screen size used by System test.
> Currently you initiate the screen size inside
>
> /test/application_system_test_case.rb
> require "test_helper"
>
>
> class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
> driven_by :selenium, using: :chrome, screen_size: [1400, 1400]
> end
>
>
>
> What if you have a mobile friendly web application, and the app is
> displayed differently depending on the screen size.
> Could it be possible to change the size of the browser while running the
> test suite, this could be handy, because nobody wants to change a config
> files in between tests?
>
> I have found that you can change the screen size using capybara like this.
> I have tested this myself, and works fine. There must be similar solutions
> using poltergeist and webkit as well.
> Capybara.current_session.driver.browser.manage.window.resize_to(400, 400)
>
> My initial idea would be to somehow specify in your test, what screen size
> you would like for your tests, and change it depending. What do you think
> about this?
>
> If there is anything else that need to be done in regards to System Test,
> I am open for suggestion, I am eager to contribute. :)
>
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