Capybara
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How Capybara Addresses the Async Problem

At the heart of the solution is Capybara::Node::Base#synchronize. This method basically executes the passed-on block (which is almost always some finder-style expectation) and repeats the check until the finder succeeds or until a timer expires (Capybara.default_wait_time), whichever comes first.

(Note: this means there is no need for some other tool to detect when something in the browser is not ready. Simply set the Capybara.default_wait_time to be long enough to cover the legitimate wait time). For example, the capybara-angular gem, at best, reduces the number of times Capybara executes the expectation because it waits for angular to be ready, first. In practice, this is not necessary.

Raw Notes

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