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I am building a Rails 3 app which renders different views for mobile devices (using jQuery Mobile) and regular desktop browsers. I am testing with Cucumber/Capybara, and have separate test suites for mobile and browser. I am able to set a mobile User-Agent string in the request's HTTP header just fine using the ‘headers hack’ found here…
Most of my mobile Cucumber steps work fine (e.g., I set the mobile header in a step, thereafter the mobile views render). However after a form submit, the test then renders a browser view of the next step (not the mobile view I want). I think this may be because Capybara is dropping the header after a form submit action.
I tried to test this by adding a logger to my controller action so I could look at the user_agent headers, as follows:
I used an iPhone header (Buyer is the resource). In my test.log I see:
For the create action…
Started POST "/buyers" for 127.0.0.1 at 2011-04-19 16:49:18 -0700
Processing by BuyersController#create as HTML
Headers: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A293 Safari/6531.22.7
Redirected to http://www.example.com/buyers/1
Completed 302 Found in 7ms
For the subsequent show action (note ‘Headers:’ is blank)…
Started GET "/buyers/1" for 127.0.0.1 at 2011-04-19 16:49:18 -0700
Processing by BuyersController#show as HTML
Completed 200 OK in 4ms (Views: 2.8ms | ActiveRecord: 1.4ms)
As one would expect, the a ‘show me the page’ step then renders the browser page, not the mobile page I want.
How can I preserve the header so all my mobile steps run in my mobile test suite?
Added :headers option to rack_test driver, closes #328