Best Unit Testing Software for ReSharper

Visual Studio by Microsoft is a complete ecosystem for professional developers, combining robust coding environments, integrated AI capabilities, and advanced collaboration tools. The flagship Visual Studio 2022 IDE delivers an all-in-one workspace with compilers, debuggers, designers, and performance profilers for .NET, C++, C#, and Azure development. Meanwhile, Visual Studio Code (VS Code) offers a lightweight yet powerful editor that runs on Windows, macOS, and Linux, ideal for web, JavaScript, Python, and container-based workflows. With GitHub Copilot integration, developers receive intelligent code completions, automated refactoring, and natural language explanations of complex logic. Agent Mode introduces an AI-driven assistant that can edit across files, execute builds, and resolve compile or test errors autonomously. Built-in tools like unit test generators, CI-aware policy enforcement, and style validation help ensure clean, testable, and secure code. Thousands of extensions from the Visual Studio Marketplace expand functionality for database, cloud, and DevOps workflows. Together, these platforms redefine productivity, helping teams code smarter and deliver innovation faster.

Unit testing made simple: You can write tests without modifying your existing code, including legacy systems. This applies to static methods, private methods, non-virtual methods, out parameters, and even class members and fields. Our professional edition is available at no cost for developers globally, alongside options for paid support packages. By enhancing your code integrity, you can consistently produce high-quality code. You can create entire object models with just a single command, enabling you to mock static methods, private methods, constructors, events, LINQ queries, reference arguments, and more, whether they are live or future elements. The automated test suggestion feature tailors recommendations specifically for your code, while our intelligent test runner efficiently executes only the tests that are impacted, providing you with rapid feedback. Additionally, our coverage tool allows you to visualize your code coverage directly in your editor as you develop, ensuring that you keep track of your testing progress. This comprehensive approach not only saves time but also significantly enhances the reliability of your software.

xUnit.net is a community-driven, open-source unit testing framework designed for the .NET Framework, available at no cost. Developed by the creator of NUnit v2, it represents the cutting-edge approach to unit testing for languages such as C#, F#, and VB.NET, among others. Additionally, xUnit.net integrates seamlessly with tools like ReSharper, CodeRush, TestDriven.NET, and Xamarin. As a member of the .NET Foundation, it adheres to their established code of conduct, ensuring a collaborative and respectful environment for developers. This makes xUnit.net an excellent choice for modern software development practices in the .NET ecosystem.

dotCover is a powerful code coverage and unit testing tool designed for .NET that seamlessly integrates into Visual Studio and JetBrains Rider. This tool allows developers to assess the extent of their code's unit test coverage while offering intuitive visualization features and is compatible with Continuous Integration systems. It effectively calculates and reports statement-level code coverage for various platforms including .NET Framework, .NET Core, and Mono for Unity. As a plug-in to popular IDEs, dotCover enables users to analyze and visualize coverage directly within their coding environment, facilitating the execution of unit tests and the review of coverage outcomes without having to switch contexts. Additionally, it boasts support for customizable color themes, new icons, and an updated menu interface. Bundled with a unit test runner shared with ReSharper, another JetBrains product for .NET developers, dotCover enhances the testing experience. It also supports continuous testing, allowing it to dynamically identify which unit tests are impacted by code modifications as they occur. This real-time analysis ensures that developers can maintain high code quality throughout the development process.