/mocks-and-stubs-lab

Primary LanguageJavaScript

Lab: Mocking with jest

Getting started

  • Fork and clone repo
  • cd into project directory
  • Install dependencies: npm install
  • Run tests: npm run test:watch
  • You can also check your test coverage: npm run test:coverage

Tasks

In this lab, the code for a payments processor has been implemented, and your task is to write tests for each function:

  • main.js
    • a few sample test cases are already provided in main.test.js. You need to remove the .skip on the tests and implement them
    • Hint: you need to mock the functions from paymentService and queueService to simulate the test scenarios
  • queueService.js
    • write unit tests for generateQueue.
    • Hint: you need to mock math.randomInt to simulate different test scenarios

IMPORTANT: not all functions will require mocking! If the function has a dependency on something from another file/library, mock that dependency. Otherwise, just test it like how you've been unit-testing functions