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Avoiding Flapping JS Tests in Rails

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Adam DeLong @DeLongShot Bell Park Software

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Acceptance

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Asynchronous Testing

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Race Conditions

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Test Thread Visit ‘/‘ Wait for response… Receive Response expect(page)…

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Test Thread Visit ‘/‘ Wait for response… expect(page)… Wait for response… Background Thread Receive Request Formulating Response… Send Response Formulating Response…

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Tips

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UI

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Action Methods

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RSpec Matchers

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Tools

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Selenium Pros: Reliable Cons: Slow

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Poltergeist Pros: Really Fast Cons: Flapping

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Capybara-Webkit Pros: Fast Cons: Errors?

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Resources

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https://robots.thoughtbot.com/write-reliable-asynchronous-integration-tests-with- capybara Write Reliable, Asynchronous Integration Tests With Capybara