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Here I show how to test your Javascript code. We will test pure functions (they are the easiest to test, because they don’t have side effects). Then we test a function with side effects and we mock a global function using Jest. And finally we test an object method. We also talk about AAA (Arrange Act Assert) pattern here.

Code: https://github.com/satansdeer/test-example

#javascript #jest #testing #programming #developer

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HOW TO TEST JAVASCRIPT CODE USING JEST - TEST PURE FUNCTIONS | MOCK GLOBAL VARIABLES | TEST METHODS

Here I show how to test your Javascript code. We will test pure functions (they are the easiest to test, because they don't have side effects). Then we test a function with side effects and we mock a global function using Jest. And finally we test an object method. We also talk about AAA (Arrange Act Assert) pattern here.

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