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What is Coverlet?

Coverlet operates with the .NET Framework on Windows and also supports .NET Core across a range of compatible platforms, specifically offering coverage for deterministic builds. The current implementation, however, has its limitations and often necessitates a workaround for optimal functionality. For developers interested in visualizing Coverlet's output while coding within Visual Studio, various platform-specific add-ins can be utilized. Moreover, Coverlet integrates effortlessly with the build system to facilitate code coverage analysis after tests are executed. Enabling code coverage is a simple process; you only need to set the CollectCoverage property to true in your configuration. To effectively use Coverlet, it is essential to specify the path to the assembly that contains the unit tests. In addition, you must designate both the test runner and the corresponding arguments through the --target and --targetargs options. It’s important to ensure that invoking the test runner with these options does not require recompiling the unit test assembly, as such recompilation would hinder the generation of accurate coverage results. Adequate configuration and a clear understanding of these components will lead to a more efficient experience while utilizing Coverlet for assessing code coverage. Ultimately, mastering these details can significantly enhance your development workflow and contribute to more reliable software quality assessments.

What is Coco Code Coverage?

Coco by Qt is an advanced code coverage and test analysis platform designed for developers, QA engineers, and compliance leads building safety-critical or performance-sensitive software. Supporting C, C++, C#, QML, and Tcl, Coco measures coverage from statement and branch analysis to Modified Condition/Decision Coverage (MC/DC), giving a granular view of code quality and test completeness. It integrates seamlessly with IDEs like Visual Studio, Eclipse, and Qt Creator, as well as CI/CD tools such as Jenkins and CMake, enabling automated coverage feedback within existing workflows. Coco’s instrumentation engine works across desktop, embedded, and cross-compiled environments, supporting diverse toolchains like GCC, Clang, ARM, and Green Hills. The platform helps teams meet functional safety requirements under ISO 26262, DO-178C, EN 50128, and IEC 62304, with ready-to-use qualification kits that save months of manual certification work. Its Cross-Compilation Add-on enables coverage analysis on constrained systems and microcontrollers, while the Test Center integration consolidates coverage data and test results for a unified QA dashboard. By highlighting untested logic, redundant test cases, and compliance gaps, Coco reduces testing time while increasing accuracy. Its audit-ready reports and traceable artifacts make it indispensable for industries like automotive, medical devices, rail, and aerospace. Whether running on Windows, Linux, macOS, or real hardware, Coco ensures developers know exactly what’s tested—and what’s missed. In a world where software quality and certification matter more than ever, Coco helps teams measure, optimize, and certify with confidence.

Media

Media

Integrations Supported

Visual Studio
.NET
Codecov

Integrations Supported

Visual Studio
Axivion Static Code Analysis
BlackBerry QNX
C
C#
C++
Coverity Static Analysis
Git
GitLab
JUnit
Jira
NUnit
QML
SonarQube Server
SystemC
TeamCity
TestRail
VxWorks

API Availability

API Availability

Pricing Information

Free
Free Version

Pricing Information

Pricing not provided
Free Trial Offered?

Supported Platforms

Windows
Mac
Linux

Supported Platforms

Windows
Linux

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
Webinars
On-Site Training

Company Facts

Organization Name

Coverlet

Company Website

github.com/coverlet-coverage/coverlet

Company Facts

Organization Name

Qt Group

Date Founded

1994

Company Location

Finland

Company Website

www.qt.io/quality-assurance/coco

Categories and Features

Code Coverage

Not specified

Categories and Features

Code Coverage

Not specified

Static Code Analysis

Not specified

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