Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.
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HTTP server mocking and expectations library for Node.js
An email and SMTP testing tool with API for developers
- email-testing
- go
- golang
- smtp-server
Mockery is a simple yet flexible PHP mock object framework for use in unit testing with PHPUnit, PHPSpec or any other testing framework. Its core goal is to offer a test double framework with a succinct API capable of clearly defining all possible object operations and interactions using a human readable Domain Specific Language (DSL).
- mockery
- phpunit
- php
- stub
Record, Replay, and Stub HTTP Interactions.
A tool for mocking HTTP services
- wiremock
- json
- mocking
- stubbing
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
- oas
- prism
- mocking
- api-testing
MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSockets, TCP and more on a single port, with additional support for HTTP/3, message brokers, and AI/LLM APIs.
- mock-server
- proxy
- java-client
- javascript-client
Library for stubbing and setting expectations on HTTP requests in Ruby.
🔮 Proxies nodejs require in order to allow overriding dependencies during testing.
🎲 Mock or extend your GraphQL API with faked data. No coding required.
Lightweight service virtualization/ API simulation / API mocking tool for developers and testers
- api-simulation
- golang
- proxy
- mitm
An in memory postgres DB instance for your unit tests
- hacktoberfest
- pg-promise
- typeorm
- node-postgres
The jQuery Mockjax Plugin provides a simple and extremely flexible interface for mocking or simulating ajax requests and responses
Get a full fake GraphQL API with zero coding in less than 30 seconds.
- graphql
- graphql-server
- express-graphql
Mocks and explicit contracts in Elixir
C++ mocking made easy. A simple yet very expressive, headers only library for c++ mocking.
Embedded unit testing framework for Godot 4 supporting GDScript and C#. Features test-driven development, embedded test inspector, extensive assertions, mocking, scene testing.
A collection of utilities for creating/testing/experimenting with service workers.
- service-worker
Mock Alamofire and URLSession requests without touching your code implementation
- wt-branch-protection-two-approvals
- wt-branch-protection-exempt
A tool for generating self-contained, type-safe test doubles in go
Bypass provides a quick way to create a custom plug that can be put in place instead of an actual HTTP server to return prebaked responses to client requests.
Mock HTTPX with awesome request patterns and response side effects 🦋
A mocking library for Erlang
- erlang
- testing
- mocking-library
- meck