UndercoverCI vs. Coco Code Coverage

Elevate your Ruby testing and GitHub workflow with actionable insights on code coverage that empower your team to produce high-quality code efficiently while reducing the time dedicated to pull request evaluations. Instead of aiming for a flawless 100% test coverage, prioritize the reduction of defects in your pull requests by pinpointing untested code modifications before deployment. Following a simple configuration where your CI server executes tests and communicates coverage results to UndercoverCI, you can guarantee that every pull request undergoes thorough scrutiny; our tool examines the adjustments in your code and evaluates local test coverage for all altered classes, methods, and blocks, as relying solely on an overall coverage percentage is inadequate. This solution reveals untested methods and blocks, points out unused code paths, and assists in optimizing your test suite. You can seamlessly incorporate UndercoverCI’s hosted GitHub App or explore the variety of available Ruby gems. With a comprehensive integration for code reviews via GitHub, the setup process is swift and customized to meet your organization’s specific needs. Furthermore, the UndercoverCI initiative, along with its Ruby gems, is entirely open-source and can be freely employed in your local environment as well as throughout your CI/CD pipelines, making it an adaptable option for any development team. By embracing UndercoverCI, you enhance your code quality while also cultivating a culture of ongoing improvement within your team, ultimately leading to a more efficient development process. This initiative not only promotes better coding practices but also encourages collaboration and knowledge sharing among team members.

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.