Code Coverage Analysis Skill

Overview

This skill provides expert-level capabilities for code coverage analysis across multiple languages, enabling coverage collection, report generation, and quality gate enforcement.

Capabilities

JavaScript/TypeScript Coverage

• Configure Istanbul/nyc for JavaScript coverage
• V8 coverage collection
• Source map support for TypeScript

Python Coverage

• Configure coverage.py for Python coverage
• Branch coverage analysis
• Context-based coverage

Java Coverage

• JaCoCo configuration for Java coverage
• Maven/Gradle integration
• Multi-module project support

Coverage Merging

• Merge coverage reports from multiple sources
• Combine unit and integration coverage
• Cross-test-type aggregation

Reporting

• Generate coverage badges
• Track coverage trends
• Generate HTML and XML reports

Quality Gates

• Configure coverage thresholds
• Enforce minimum coverage requirements
• Block merges on coverage drops

Analysis

• Analyze uncovered code paths
• Identify dead code
• Priority coverage recommendations

Integration

• SonarQube integration
• Codecov/Coveralls integration
• CI/CD pipeline integration

Target Processes

• automation-framework.js - Framework coverage setup
• mutation-testing.js - Coverage for mutation testing
• quality-gates.js - Coverage-based gates
• continuous-testing.js - CI/CD coverage

Dependencies

• nyc / c8 - JavaScript coverage
• coverage.py - Python coverage
• JaCoCo - Java coverage

Usage Example

{
  kind: 'skill',
  skill: {
    name: 'code-coverage',
    context: {
      action: 'analyze',
      language: 'javascript',
      reportFormats: ['html', 'lcov', 'json'],
      thresholds: {
        lines: 80,
        branches: 75,
        functions: 80
      }
    }
  }
}

Configuration

The skill auto-detects project language and configures appropriate coverage tools.