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Top 15 Go Mocking Projects
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Testify simplifies writing unit tests in Go. The standard testing package is fine, but Testify adds assertions, mocking, and suite support, making tests more readable and maintainable.
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hoverfly
Lightweight service virtualization/ API simulation / API mocking tool for developers and testers
Hoverfly: A lightweight service virtualization tool specializing in API simulation and traffic capture for realistic mocks. It's particularly useful for cloud-native applications and supports CI/CD integration.
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Another great option is gock, a lib that is also inspired by nock, with a simple and easy API. It works by intercepting any HTTP request made by any http.Client and adding it to a list, so it can check if a mock request exists. If not, an error is returned, unless the real networking mode is on. In that case, the request is done normally.
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apitest
A simple and extensible behavioural testing library for Go. You can use api test to simplify REST API, HTTP handler and e2e tests.
At last, the apitest is a lib inspired by gock that has an infinity matchers and features. It also allows the user to build a sequence diagram of its HTTP calls. A cool thing is their excellent website with a lot of examples.
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mocha is a lib inspired by nock and WireMock. It allows checking if the mock was called or not, which is a nice feature. Like httptest, it also it don't automatically intercept the requests.
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Project mention: Show HN: Testify mock without the boilerplate (Golang) | news.ycombinator.com | 2025-01-01
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Go Mocking discussion
Go Mocking related posts
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How to Implement Mock APIs for API Testing
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The best way for testing outbound API calls
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Testando chamadas para APIs da melhor forma
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I Write Tests in Go
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Direction of mockery: absorb different styles of mocks into this project · vektra mockery · Discussion #671
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vektra/mockery has fully released the "packages" feature! This blog explains what it is and how it works.
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Why elixir over Golang
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A note from our sponsor - SaaSHub
www.saashub.com | 18 Jun 2025
Index
What are some of the best open-source Mocking projects in Go? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Testify | 24,723 |
| 2 | mockery | 6,621 |
| 3 | hoverfly | 2,414 |
| 4 | gock | 2,172 |
| 5 | moq | 2,093 |
| 6 | apitest | 821 |
| 7 | vfs for golang | 475 |
| 8 | go-github-mock | 120 |
| 9 | mocha | 49 |
| 10 | go-sdk | 45 |
| 11 | mockc | 33 |
| 12 | mockcompose | 16 |
| 13 | mockitout | 11 |
| 14 | mock | 10 |
| 15 | gokka | 3 |
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