Skip to content

Conversation

@konard
Copy link
Member

@konard konard commented Sep 13, 2025

Summary

This PR addresses issue #74 by implementing comprehensive test coverage for the Platform.Numbers library, significantly improving code quality and reliability.

📊 Test Coverage Improvements

Before: 39.5% line coverage, 45.45% branch coverage, 7 tests
After: 98.76% line coverage, 90.9% branch coverage, 76 tests

✅ What's New

New MathTests.cs

  • Factorial Tests: Complete coverage with valid inputs (0-20) and boundary validation
  • Catalan Number Tests: Comprehensive testing for all supported values (0-36)
  • IsPowerOfTwo Tests: Edge cases including powers of 2, non-powers, and boundary conditions
  • Generic Type Tests: Validation across different numeric types
  • Constants Tests: Verification of MaximumFactorialNumber and MaximumCatalanIndex

Enhanced BitTests.cs

  • Bit.Count Tests: Full coverage for previously untested bit counting functionality
  • Negative Parameter Tests: Edge cases for negative shift/limit parameters in Bit
  • Round-trip Tests: Ensures PartialWrite/PartialRead operations are reversible
  • Multi-type Tests: Coverage across byte, ushort, uint, and ulong types

🐛 Bug Fix

Fixed incorrect bounds checking in Math.Factorial method:

  • Issue: Used MaximumCatalanIndex instead of MaximumFactorialNumber
  • Impact: Could cause IndexOutOfRangeException for valid factorial inputs
  • Fix: Corrected to use proper MaximumFactorialNumber constant

🧪 Test Results

All 76 tests pass successfully, including:

  • 24 factorial tests (valid cases + boundary conditions)
  • 18 Catalan number tests (valid cases + boundary conditions)
  • 15 IsPowerOfTwo tests (comprehensive range testing)
  • 13 bit counting tests (including edge cases with negative numbers)
  • 6 Bit generic operation tests (negative parameters, round-trips, multi-type)

The implementation provides nearly complete test coverage while maintaining backward compatibility and fixing existing bugs.

🤖 Generated with Claude Code


Resolves #74

Adding CLAUDE.md with task information for AI processing.
This file will be removed when the task is complete.

Issue: #74
@konard konard self-assigned this Sep 13, 2025
Added comprehensive test coverage for all Platform.Numbers functionality:

- **New MathTests.cs**: Complete test coverage for Math class
  - Factorial function tests with valid inputs (0-20) and boundary cases
  - Catalan number tests with valid inputs (0-36) and boundary cases
  - IsPowerOfTwo tests covering edge cases and comprehensive range
  - Generic type tests for all three Math methods
  - Tests for maximum constant values

- **Enhanced BitTests.cs**: Added missing test coverage for Bit class
  - Complete test coverage for Bit.Count method (previously untested)
  - Tests for negative shift and limit parameters in Bit<T> operations
  - Round-trip tests for PartialWrite/PartialRead operations
  - Tests with different numeric types (byte, ushort, uint, ulong)

- **Bug Fix**: Fixed incorrect bounds check in Math.Factorial method
  - Changed from MaximumCatalanIndex to MaximumFactorialNumber
  - Ensures proper argument validation for factorial calculations

**Test Coverage Results:**
- Line Coverage: 98.76% (increased from 39.5%)
- Branch Coverage: 90.9% (increased from 45.45%)
- Total Tests: 76 (increased from 7)
- All tests passing

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
@konard konard changed the title [WIP] Cover the code with tests Cover the code with comprehensive tests Sep 13, 2025
@konard konard marked this pull request as ready for review September 13, 2025 17:43
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

Cover the code with tests

2 participants