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Aggregated Reports

This module consolidates quality metrics and coverage reports from all project modules.

📊 Coverage Reports

Combined Code Coverage

JaCoCo Aggregated Report

This report combines test coverage from all modules:

  • TP1: Fundamentals & Design Patterns
  • TP2: Interfaces & Polymorphism

Metrics included:

  • Instructions: Bytecode instruction coverage
  • Branches: Branch coverage for conditional logic
  • Lines: Source line coverage
  • Methods: Method execution coverage
  • Classes: Class instantiation coverage

📈 Understanding Coverage

What is Code Coverage?

Code coverage measures which parts of your codebase are executed during tests. Higher coverage generally indicates more thorough testing, but 100% coverage doesn't guarantee bug-free code.

Coverage Metrics Explained

  • Instruction Coverage: % of bytecode instructions executed
  • Branch Coverage: % of decision branches (if/else, switch) tested
  • Line Coverage: % of source code lines executed
  • Cyclomatic Complexity: Measure of code complexity

Good Coverage Goals

  • ≥ 80%: Good baseline for production code
  • ≥ 90%: Excellent coverage indicating thorough testing
  • 100%: Not always necessary or practical

Focus on:

  • Critical business logic
  • Complex algorithms
  • Error handling paths
  • Edge cases

🎯 Using These Reports

For Students

  1. Explore the aggregated JaCoCo report
  2. Look for red/yellow sections (uncovered code)
  3. Check branch coverage for conditional logic
  4. Review missed complexity for untested paths

For Instructors

  • Assess overall project test quality
  • Identify modules needing more tests
  • Compare coverage across modules
  • Track coverage trends over time

📦 Module-Specific Reports

For detailed per-module analysis:

🔍 Additional Quality Metrics

While this module focuses on aggregated coverage, each module provides:

  • Test Results: Success/failure rates
  • Checkstyle: Code style compliance
  • PMD: Code quality issues
  • CPD: Code duplication detection
  • SpotBugs: Potential bug detection

🚀 Generating Reports

To regenerate these aggregated reports:

# From project root
./build-site.sh --with-tests

# View aggregated report
open target/staging/report-aggregate/jacoco-aggregate/index.html

Note: Tests must be run before aggregation for accurate coverage data.

📚 Learn More

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