What is TypeScript unit testing and how do I get started?

What is TypeScript unit testing and how do I get started?

TypeScript unit testing involves writing tests for your TypeScript code to ensure it behaves as expected. You can get started by using frameworks like Jest or Mocha.

Can you show me a simple example of a unit test in TypeScript?

Sure! Here's a basic example using Jest:

function add(a: number, b: number): number {
    return a + b;
}

test('adds 1 + 2 to equal 3', () => {
    expect(add(1, 2)).toBe(3);
});

What tools do I need to set up for TypeScript unit testing?

You'll need Node.js, TypeScript, and a testing framework like Jest or Mocha. You can install them via npm.

How do I run my tests once I've written them?

You can run your tests using the command line. For Jest, simply use npm test or jest if it's set up in your package.json.