writing-test.md

Test-Driven Development

Test-Driven Development (TDD) is a software development approach where tests are written before the actual code. The process follows these steps:

1. Write a Test: Create a test for a new function or feature.
2. Run the Test: The test will fail initially because the feature isn't implemented yet.
3. Write Code: Write the minimal code needed to pass the test.
4. Run the Test Again: Ensure the code passes the test.
5. Refactor: Clean up the code while ensuring the test still passes.
6. Repeat: Continue this cycle for each new feature or function.

different type of testing

• Unit testing
  • goal: ensure that each part of the program works correctly on its own.
• Integration testing
  • goal: to identify issues that may arise when these components work together.
• End to End testing
  • goal: ensures that the complete system operates as expected, including interactions with external interfaces and databases.
• Acceptance testing
  • goal: ensures the software does what it is supposed to do based on client requirements.
• Performance testing
  • goal: identify performance bottlenecks and ensure the software can handle expected user loads.
• Smoke testing
  • goal: ensures that the major functions of the software work correctly before proceeding with more detailed testing.

Writing test

// vitest
import {describe, it} from "vitest"

// format; 
// sucess 
// invalid 
// empty

// just test the functionality!

describe((), () => {
  it("",() => {
    
    expect()
  })
}) 

vitest expect() api

react lib test screen() api

react lib test render() api

github action with vitest

faker

tuturial