50 lines
1.6 KiB
Markdown
50 lines
1.6 KiB
Markdown
Now you can keep that precious browser window open when doing continuous integration testing.
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Save seconds, and sanity, with every test re-run!
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Also, the browser stays open at its last state so you can inspect it and more easily
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fix your tests and/or code.
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Start an instance:
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``` bash
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persistent_selenium [ --port 9854 ] [ --browser firefox ]
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```
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Tell Capybara to use it:
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```
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# features/support/env.rb
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require 'persistent_selenium/driver'
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Capybara.default_driver = :persistent_selenium
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```
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If you're using Cucumber, you can also install that hook:
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``` bash
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persistent_selenium install
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```
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Should work just the same as if you used the standard Capybara Selenium driver, except for
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these two differences:
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* The browser starts up first thing and sticks around, so you don't pay the startup/shutdown
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penalty with each test run.
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* The last page you were on before your tests passed/failed stays there, so you can inspect it
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and adjust your tests.
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The browser's cache is disabled, and cookies are reset before the next test runs, so you still get the state
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cleared out before your next set of tests.
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### Under the hood
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It's DRb, which mostly Just Works (tm), and has a little reshuffling of the default Capybara Selenium driver's code.
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#### When DRb doesn't Just Work (tm)
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You may see recycled object errorrs. Capybara is complex enough that, eventually, something
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will get garbage collected on the server and an object on the client will notice.
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I turned off garbage collection on the server but it still happens.
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Just rerun the test. It doesn't happen too often. It's the price you pay for speed.
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