Nestjs Testing Expert
shipshitdev/libraryGood tests keep your NestJS app working smoothly. This skill helps you write clear tests using Jest. You will learn how to test services, modules, and controllers.
Unit tests check small pieces of logic. Integration tests test whole modules with real parts. End to end tests make sure your HTTP APIs work right. The testing pyramid guides you to the right type for each job.
You will use Test.createTestingModule to set up test environments. Mock outside services with jest.fn. For databases, use in memory adapters. Keep your tests fast and reliable.
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