PowerMock is a Java framework that allows you to unit test code normally regarded as untestable.
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A gem providing "time travel", "time freezing", and "time acceleration" capabilities, making it simple to test time-dependent code. It provides a unified method to mock Time.now, Date.today, and DateTime.now in a single call.
Papercut SMTP -- The Simple Desktop Email Server
Automatically mock your HTTP interactions to simplify and speed up testing
🔮 Proxies nodejs require in order to allow overriding dependencies during testing.
Lightweight service virtualization/ API simulation / API mocking tool for developers and testers
- api-simulation
- golang
- proxy
- mitm
The jQuery Mockjax Plugin provides a simple and extremely flexible interface for mocking or simulating ajax requests and responses
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
Generate custom HTTP responses, the simpler way to test your Web Services
- scala
- mocky
- javascript
- mock
Get a full fake GraphQL API with zero coding in less than 30 seconds.
- graphql
- graphql-server
- express-graphql
CppUTest unit testing and mocking framework for C/C++
- cpputest
- unit-testing
- test-driven-development
- c-plus-plus
vfsStream is a stream wrapper for a virtual file system that may be helpful in unit tests to mock the real file system. It can be used with any unit test framework, like PHPUnit or SimpleTest.
- vfsstream
- php
- testing
- filesystem
Record and replay your HTTP interactions for fast, deterministic and accurate tests
- go
- golang
- testing
C++ mocking made easy. A simple yet very expressive, headers only library for c++ mocking.
Library to send mock remote notifications to the iOS simulator
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
JVM version of Pact. Enables consumer driven contract testing, providing a mock service and DSL for the consumer project, and interaction playback and verification for the service provider project.
- pact
- consumer-driven-contracts
- contract-testing
- hacktoberfest
:heavy_check_mark: PHP Test Framework for Freedom, Truth, and Justice
Replace any .NET method (including static and non-virtual) with a delegate
- testing
- testing-framework
- isolation-framework
- dotnet
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.
:heavy_check_mark: Mock data for your prototypes and demos. Remote deployments to Zeit now.
- atmo
- prototyping
- mock-services
- mock-server
Free, open-source AWS emulator. LocalStack alternative: 107 services, 7,657 operations, true 100% Smithy conformance (258,545/258,545 variants pass). No account, no auth token, no paid tier.