dotCover

dotCover is a code coverage tool developed by JetBrains. It is designed to help developers understand which parts of their application code are exercised by unit tests. By analyzing the execution flow of tests, dotCover identifies lines of code that are covered and those that are not. This information is crucial for ensuring thorough test suite coverage and identifying areas that may require additional testing.

The tool integrates with various development environments, most notably Visual Studio, and can also be used from the command line. dotCover supports a wide range of .NET technologies, including .NET Framework, .NET Core, and .NET 5+. It provides detailed reports that can be visualized in different formats, such as hierarchical views and coverage coloring within the code editor. These reports allow developers to pinpoint specific areas of their codebase that lack sufficient test coverage.

Key features of dotCover include its ability to cover statement, branch, and property coverage, as well as its support for asynchronous code. It also offers functionalities for filtering coverage results, allowing users to exclude specific assemblies or namespaces from their analysis. The tool's performance is optimized to minimize the impact on test execution time. Ultimately, dotCover aims to improve code quality and reduce the risk of regressions by providing actionable insights into test coverage.