# moq/moq4

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6,387 stars · 834 forks · C# · NOASSERTION

## Links

- GitHub: https://github.com/Moq/moq4
- awesome-repositories: https://awesome-repositories.com/repository/moq-moq4.md

## Description

Moq4 is a .NET mocking framework used to create simulated implementations of interfaces and abstract classes. It serves as a test double generator and behavior verification tool, allowing developers to isolate code during unit testing by replacing real dependencies with programmed mocks.

The framework enables the definition of expected method behaviors and return values to control the execution flow of tests. It provides specialized capabilities for simulating methods that use output or reference parameters and mechanisms to monitor and trigger events on simulated objects.

The library includes tools for dependency interaction verification to ensure specific methods were called with the correct arguments. It supports a wide range of mocking and stubbing primitives to simulate complex object behaviors and verify system interactions.

## Tags

### Programming Languages & Runtimes

- [.NET Testing Ecosystem](https://awesome-repositories.com/f/programming-languages-runtimes/net-testing-ecosystem.md) — Provides a comprehensive mocking framework specifically developed for testing and verifying code within the .NET runtime environment.
- [Setup Expression Trees](https://awesome-repositories.com/f/programming-languages-runtimes/expression-tree-compilation/setup-expression-trees.md) — Captures method calls as expression trees to allow flexible argument matching and behavioral configuration during test setup.
- [Out Parameter Mocking](https://awesome-repositories.com/f/programming-languages-runtimes/programming-utilities/function-utilities/argument-collectors/splat-argument-validations/argument-constraint-matchers/mock-argument-matchers/out-parameter-mocking.md) — Mimics methods that use output or reference parameters to return multiple values or change passed argument states. ([source](https://github.com/moq/moq4#readme))

### Software Engineering & Architecture

- [Method Interception Proxies](https://awesome-repositories.com/f/software-engineering-architecture/method-interception-proxies.md) — Implements dynamic proxy systems that intercept method calls to route them through custom handlers for behavior evaluation.
- [Mock Event Triggering](https://awesome-repositories.com/f/software-engineering-architecture/event-buses/event-bus-mocks/mock-event-triggering.md) — Enables manually triggering events on simulated objects to verify the behavior of event-driven logic. ([source](https://github.com/moq/moq4#readme))

### Testing & Quality Assurance

- [Behavior Verification](https://awesome-repositories.com/f/testing-quality-assurance/behavior-verification.md) — Verifies that specific methods were called with the correct arguments to validate the behavior of the system under test.
- [Function Call Tracking](https://awesome-repositories.com/f/testing-quality-assurance/function-call-tracking.md) — Maintains an internal registry of all intercepted calls to verify interaction counts and specific argument values.
- [Method Behavior Simulation](https://awesome-repositories.com/f/testing-quality-assurance/method-behavior-simulation.md) — Allows defining custom return values and responses for method calls to test how a system handles different data scenarios.
- [Mock Behavior Configuration](https://awesome-repositories.com/f/testing-quality-assurance/mock-behavior-configuration.md) — Allows defining dynamic responses, exceptions, and callbacks for mocked members to control test flow. ([source](https://github.com/moq/moq4#readme))
- [Mocking and Spying Libraries](https://awesome-repositories.com/f/testing-quality-assurance/mocking-and-spying-libraries.md) — Provides a complete toolset for simulating dependencies and tracking function calls to isolate code during unit testing.
- [Object Interaction Verification](https://awesome-repositories.com/f/testing-quality-assurance/object-interaction-verification.md) — Checks if specific methods on mock objects were called with expected arguments and in the correct sequence. ([source](https://github.com/moq/moq4#readme))
- [Dynamic Mock Objects](https://awesome-repositories.com/f/testing-quality-assurance/software-testing/dependency-mocking/automated-mock-generation/dynamic-mock-objects.md) — Generates runtime proxy objects to simulate interfaces and abstract classes, isolating the system under test from dependencies. ([source](https://github.com/moq/moq4#readme))
- [Test Double Libraries](https://awesome-repositories.com/f/testing-quality-assurance/test-double-libraries.md) — Generates a suite of test doubles including mocks, stubs, and spies to mimic real dependencies.
- [Event-Driven Testing Frameworks](https://awesome-repositories.com/f/testing-quality-assurance/automation-interaction-tools/test-automation-tools/event-driven-testing-frameworks.md) — Provides mechanisms to monitor and trigger events on simulated objects to verify asynchronous or observer patterns.
- [Mock Response Mapping](https://awesome-repositories.com/f/testing-quality-assurance/mock-response-mapping.md) — Provides a system to match incoming method calls against setup rules to determine the simulated return value.
- [Out and Reference Parameter Simulation](https://awesome-repositories.com/f/testing-quality-assurance/out-and-reference-parameter-simulation.md) — Manipulates method arguments and output parameters at runtime to simulate reference or out parameter modifications.

### Web Development

- [Reflection-Based Proxies](https://awesome-repositories.com/f/web-development/dynamic-proxies/runtime-proxy-interceptors/reflection-based-proxies.md) — Uses reflection-based dynamic proxies to create concrete implementations of interfaces and abstract classes at runtime.

### Part of an Awesome List

- [Testing](https://awesome-repositories.com/f/awesome-lists/devtools/testing.md) — Mocking framework.