NestJS

NestJS

Testing NestJS Guards, Interceptors, and Pipes

Guards, interceptors, pipes, and exception filters are NestJS's cross-cutting concern layer.

Testing

Testing NestJS Microservices: TCP, RabbitMQ, and Kafka Transport Layers

Testing NestJS microservices is harder than testing monolithic HTTP apps because you now have distributed components, message brokers, and transport-specific behavior to deal with. The test strategy depends on what you're testing: the message handler logic itself, the transport serialization, or the end-to-end flow across

Testing

Unit Testing NestJS Services and Controllers with Jest

Unit testing in NestJS is not complicated, but it does require understanding how the framework's dependency injection container works.

Testing

End-to-End Testing NestJS Apps with Supertest and TestingModule

End-to-end tests for NestJS apps test the full HTTP stack — routing, guards, pipes, middleware, serialization — without deploying to a server.

Testing

Testing NestJS GraphQL Resolvers, Subscriptions, and Schema Validation

Testing GraphQL APIs in NestJS requires a different approach than REST.

Testing

NestJS Testing: Unit, Integration, and E2E Testing Guide

NestJS comes with Jest pre-configured and a full testing module built into the framework.