Unit testing

In test-driven development, we will write testing code before we implement a function.  In this lab, I use a Facebook framework – Jest to test JavaScript code.

To install it.

npm install --save-dev jest


To code the test code.

  1. require the modal
  2.  Test for each function with describe(String, function)
  3. For each function, passing different arguments to the function and specify the expected result.

Finally I got this code.


In this case,

Description: “returns true for student myseneca address

Argument: someone@myseneca.ca

Excepted result: true







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