Code Coverage Tool

Calculates code test coverage from total and covered tests, with per-module breakdown and CI export options for devops workflows.

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3,036+
Total Calculations Run
< 15ms
Browser Execution Speed
100%
Client-Side Privacy
4.9 / 5.0
User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Code Coverage Tool processes input data instantly inside your browser.

Sample Input Birth date: Jan 15, 1995, Target date: Oct 20, 2023
Computed Result Chronological Age: 28 Years, 9 Months, 5 Days (10,505 days elapsed)
Execution Mode Client-Side In-Browser JS
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About This Tool

The tool ingests test results data to produce a coverage percentage and optional per-module insights. It is designed for developers, QA engineers, and CI teams who need a clear view of how much code is exercised by tests and where gaps exist. Conceptually, inputs are validated, the coverage is calculated via the standard formula, and results are exposed in a structured format for downstream usage. The system supports modular data, allowing teams to attach per-file or per-module totals and results to derive a granular view of coverage. Its unique value lies in combining a precise, formula-driven metric with optional module-level breakdown and CI-friendly exports, enabling faster remediation and better test planning. Core features include exact percentage calculation, threshold handling, and optional export to JSON/CSV for dashboards. Potential use cases include post-merge quality checks, pre-release readiness assessments, and CI pipeline integrations that gate deployment based on coverage thresholds. The tool is applicable globally, with numeric results expressed as percentages and, when configured, locale-aware formatting. Users benefit from a compact, reproducible metric that supports decision-making without requiring a full test-management system.

How to Use

  1. Provide inputs: total_tests and covered_tests, both integers.
  2. Optionally attach modules data with per-module totals and coverages.
  3. Run calculation to obtain coverage_percent and missing_tests.
  4. Review outputs: per_module_coverage if provided, and any data validity warnings.
  5. Export results as JSON or CSV for CI dashboards.
How to use code coverage testing tool

Frequently Asked Questions

Find Quick Answers

What inputs are required?
Total_tests and covered_tests are required. Optional inputs include ignored_tests and a modules array for per-module coverage. Non-integer values are validated and coerced when appropriate.
How is the coverage percentage computed?
Coverage = (covered_tests / total_tests) * 100. If total_tests <= 0, the result is 0% with a validity flag indicating invalid total input.
Can I export the results?
Yes. The tool supports exporting coverage data in JSON or CSV formats suitable for CI pipelines and dashboards.
What does per-module coverage provide?
Per-module coverage shows the share of tests covering each module. It helps identify modules with low coverage and prioritize testing efforts accordingly.

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