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TypeScript | Testing with TypeScript| Question7
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How would you create a type-safe mock using Jest?
interface UserService {
getUser: (id: number) => string;
}
const mockUserService: jest.Mocked<UserService> = {
getUser: jest.fn().mockReturnValue("Pranjal"),
};
Jest does not support type-safe mocking.
Use the jest.Mocked<T> utility for type-safe mocks.
Create mocks by directly implementing the interface.
Mocks do not require adherence to type definitions.
This question is part of this quiz :
Testing with TypeScript QuizShare your thoughts in the comments
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