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By mswatcher
via martinfowler.com
Submitted: Sep 04 2013 / 10:25

There seems to be a common misconception in the JavaScript community that testing asynchronous code requires a different approach than testing ‘regular’ synchronous code. In this post I’ll explain why that’s not generally the case. I’ll highlight the difference between testing a unit of code which supports async behavior, as opposed code which is inherently asynchronous. I’ll also show how promise-based async code lends itself to clean and succinct unit tests which can be tested in a clear, readable way while still validating async behaviour.
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