gock
HTTP traffic mocking and testing made easy in Go
Versatile HTTP mocking made easy in Go that works with any net/http based stdlib implementation. Heavily inspired by nock. There is also its Python port, pook. Simple, expressive, fluent API. Semantic API DSL for declarative HTTP mock declarations. Built-in helpers for easy JSON/XML mocking. Supports persistent and volatile TTL-limited mocks. Full regular expressions capable HTTP request mock matching. Designed for both testing and runtime scenarios. Match request by method, URL params, headers...