QE Coverage Analysis

QE Coverage Analysis

Purpose

Guide the use of v3's advanced coverage analysis capabilities including sublinear gap detection algorithms, risk-weighted coverage scoring, and intelligent test prioritization based on code criticality.

Activation

• When analyzing test coverage
• When identifying coverage gaps
• When prioritizing testing effort
• When setting coverage targets
• When assessing code risk

Quick Start

# Analyze coverage with gap detection
aqe coverage analyze --source src/ --tests tests/

# Find high-risk uncovered code
aqe coverage gaps --risk-weighted --threshold 80

# Generate coverage report
aqe coverage report --format html --output coverage-report/

# Compare coverage between branches
aqe coverage diff --base main --head feature-branch

Agent Workflow

// Comprehensive coverage analysis
Task("Analyze coverage gaps", `
  Perform O(log n) coverage analysis on src/:
  - Calculate statement, branch, function coverage
  - Identify uncovered critical paths
  - Risk-weight gaps by code complexity and change frequency
  - Recommend tests to write for maximum coverage impact
`, "qe-coverage-specialist")

// Risk-based prioritization
Task("Prioritize coverage effort", `
  Analyze coverage gaps and prioritize by:
  - Business criticality (payment, auth, data)
  - Code complexity (cyclomatic > 10)
  - Recent bug history
  - Change frequency
  Output prioritized list of files needing tests.
`, "qe-coverage-analyzer")

Analysis Strategies

1. Sublinear Gap Detection

await coverageAnalyzer.detectGaps({
  algorithm: 'sublinear',  // O(log n) complexity
  source: 'src/**/*.ts',
  metrics: ['statement', 'branch', 'function'],
  sampling: {
    enabled: true,
    confidence: 0.95,
    maxSamples: 1000
  }
});

2. Risk-Weighted Coverage

await coverageAnalyzer.riskWeightedAnalysis({
  coverage: coverageReport,
  riskFactors: {
    complexity: { weight: 0.3, threshold: 10 },
    changeFrequency: { weight: 0.25, window: '90d' },
    bugHistory: { weight: 0.25, window: '180d' },
    criticality: { weight: 0.2, tags: ['payment', 'auth'] }
  },
  output: {
    riskScore: true,
    prioritizedGaps: true
  }
});