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React 16 Tooling
book

React 16 Tooling

by Adam Boduch, Christopher Pitt
April 2018
Intermediate to advanced content levelIntermediate to advanced
298 pages
6h 34m
English
Packt Publishing
Content preview from React 16 Tooling

Basic assertions

Assertions in your unit tests are created using Jest's expectation API. These functions trigger unit test failures when the expectations of your code aren't met. The output of test failures when using this API shows you what was expected to happen in addition to what actually happened. This seriously cuts down the amount of time you spend chasing down values.

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Publisher Resources

ISBN: 9781788835015Supplemental Content