Telerik JustMock

TelerikDebugging & Testing Tools
Version 2026 Q2 (May 20, 2026)

Comprehensive mocking library for .NET unit testing scenarios.

  • Mock interfaces, classes, and members including static and non-public types.
  • Support advanced mocking scenarios such as partial and recursive mocking.
  • Integrate mocking into unit testing and build workflows.
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Fast, flexible, and complete mocking tool for crafting unit tests.
Telerik JustMock is a .NET mocking library used to create unit tests by isolating dependencies such as services, databases, and external components. It enables mocking of various object types and members, allowing developers to control behavior in tests and focus on validating application logic within unit testing workflows.

Mocking of Classes and Members

Supports mocking of interfaces, classes, methods, properties, and events, enabling control over object behavior during unit testing.

Static and Non-Public Member Mocking

Allows mocking of static methods, non-virtual members, and non-public types, enabling testing of code that is otherwise difficult to isolate.

Arrange Act Assert Syntax

Provides an API based on the Arrange, Act, Assert pattern, enabling structured definition of test setup, execution, and verification steps.

Advanced Mocking Techniques

Includes support for partial mocking, recursive mocking, sequential behavior, and automocking to handle complex unit testing scenarios.

LINQ and Data Access Mocking

Supports mocking of LINQ queries and data access layers, enabling testing of logic that depends on queryable data sources.

Testing Framework Integration

Integrates with unit testing frameworks such as MSTest, NUnit, and xUnit, enabling use within standard .NET testing workflows.

Build Process Integration

Supports execution within build processes, enabling automated testing workflows and integration into continuous integration pipelines.

Code Coverage Tool Integration

Works with code coverage tools to analyze test execution and measure coverage of application logic during testing.

Profiler-Based Mocking Capability

Uses profiling techniques to enable mocking of otherwise unmockable members such as static and sealed implementations.

Behavior Configuration and Verification

Allows configuration of expected behaviors and verification of method calls, enabling validation of interactions between components during testing.

Product Compatibility

Review the details below to ensure this product is supported within your environment.

IDE Support

  • Visual Studio

Host Application

  • Visual Studio