TLDR
Automated tests catch errors earlier, preventing them from ever being deployed. They offer a faster feedback loop for programmers because they do not need to go through each path in their application manually. A well-written test can take milliseconds, and with a good development setup, you don’t even have to leave your editor. This allows developers to more quickly implement functions since they can confidently write code without opening a browser. Hand-held testers are not as effective as computers when searching for regressions, they are much better at testing subjective qualities of software.via the TL;DR App
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