Mocking Modules and Functions in TypeScript
Use jest.mock with correct type casting strategies.
Welcome
Jest module mocking with TypeScript requires correct type casting strategies to avoid any-typed mocks.
jest.fn() with Types
Type a jest mock function with its signature.
const mockFn = jest.fn<number, [string]>();
mockFn('hello'); // typed callAll lessons in this course
- Jest Setup for TypeScript with ts-jest
- Writing Type-Safe Unit Tests
- Mocking Modules and Functions in TypeScript
- Type Testing with expectTypeOf and tsd