devlooped/moq

Health v2 · maintenance only

Adoption not part of the score

6412 stars · 834 forks observed · 2026-10-12

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Moq is the most popular mocking framework for .NET, letting developers create mock objects from interfaces and classes using lambda expressions and LINQ expression trees. It provides a simple, type-safe API for setting up behavior and verifying interactions in unit tests.

Use cases

• mock interfaces and classes in .NET unit tests
• verify method calls with expected arguments in C# tests
• set up return values for dependencies in TDD
• replace hand-written test fakes with dynamic mocks
• use LINQ expressions to create succinct mock setups

When to choose

• you're writing unit tests in C# or other .NET languages
• you want a friendly, low-barrier mocking API with strong typing
• you prefer state-based or classic TDD with interaction verification
• you want the de facto standard mocking library for .NET

When to avoid

• you're not developing on the .NET platform
• you need integration or end-to-end testing rather than unit-test isolation
• you prefer a different mocking style such as NSubstitute or fake providers

Facets

library · maturity active

mocking testing testing developer-tools dotnet cross-platform csharp unit-testing tdd linq-to-mocks nuget

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