HimanshuP90 / React-Hooks-TypeScript

A Todo app using react v16.9.0 hooks, typescript & webpack4 configuration with es6 syntax

Why Test?

1. Get an error if you break code

2. save time

3. Think about possible issues & bugs

4. integrate into build workflow

5. Performance

6. Features

7. Usability

1: unit test, api test, integration, component, ui test, e2e.

module under test ? isolation mock something else which is using in components

++++ What makes a good test +++++

1. run fast
2. test should not break.
3. easy to read and understand.
4. good coverage to effort ratio.
5. mocking too much reduce test quality.

+++++++ Test Strcuture ++++++++

1. Initial Setup for rendering.
2. Disptach an action.
3. expect data to change.

ESLint: basically check the code & test the basic error