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Task 6.1: Create ReportGenerator and console output formatter

This PR implements the core reporting infrastructure with console output formatting:

Changes Made

  • ✅ Add IReportFormatter interface for output formatting
  • ✅ Implement ReportGenerator class with support for multiple formats
  • ✅ Create ConsoleFormatter with colored output for additions, removals, modifications
  • ✅ Add summary statistics and breaking change indicators
  • ✅ Include unit tests for console output formatting
  • ✅ Supports ReportFormat.Console with fallback handling for unsupported formats

Key Features

  • Multi-format support: Extensible architecture for different output formats
  • Colored console output: Uses Spectre.Console for colored text and formatting
  • Comprehensive reporting: Includes summary statistics, breaking change indicators, and detailed change listings
  • Error handling: Proper fallback to console format when unsupported formats are requested
  • Test coverage: Unit tests for both ReportGenerator and ConsoleFormatter

Requirements Addressed

  • 4.4: Console output with clear, colored summary of changes
  • 8.1: Summary statistics and detailed change information
  • 8.4: Breaking change indicators and categorization

Testing

  • Unit tests validate console formatting output
  • Tests cover both normal and test modes
  • Breaking change detection and display verified
  • Summary statistics calculation tested

This establishes the foundation for additional formatters (JSON, Markdown) in subsequent tasks.

- Add IReportFormatter interface for output formatting
- Implement ReportGenerator class with support for multiple formats
- Create ConsoleFormatter with colored output for additions, removals, modifications
- Add summary statistics and breaking change indicators
- Include unit tests for console output formatting
- Supports ReportFormat.Console with fallback handling for unsupported formats

Addresses Requirements: 4.4, 8.1, 8.4
Update Exception to Exception? in ReportGeneratorTests to match the expected
nullability signature for ILogger.Log method.
@jbrinkman jbrinkman requested a review from Copilot July 20, 2025 19:27
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Pull Request Overview

This PR implements a comprehensive reporting infrastructure with console output formatting, adding the core components needed for generating and displaying API comparison reports. The implementation provides a multi-format architecture with colored console output and extensive test coverage.

  • Core ReportGenerator class with pluggable formatter support and fallback handling
  • ConsoleFormatter with colored output using Spectre.Console for different change types
  • Comprehensive unit tests covering various scenarios and edge cases

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

Show a summary per file
File Description
src/DotNetApiDiff/Interfaces/IReportFormatter.cs Defines the interface contract for output formatters
src/DotNetApiDiff/Reporting/ReportGenerator.cs Main report generation logic with multi-format support and file I/O
src/DotNetApiDiff/Reporting/ConsoleFormatter.cs Console-specific formatting with colored output and detailed change visualization
src/DotNetApiDiff/Program.cs Service registration for dependency injection
tests/DotNetApiDiff.Tests/Reporting/ReportGeneratorTests.cs Unit tests for report generator functionality
tests/DotNetApiDiff.Tests/Reporting/ConsoleFormatterTests.cs Comprehensive tests for console formatter output

@jbrinkman jbrinkman force-pushed the feature/task-6.1-report-generator branch from 116d041 to 166fcb2 Compare July 20, 2025 19:38
@jbrinkman jbrinkman merged commit 223657e into main Jul 20, 2025
14 checks passed
@jbrinkman jbrinkman deleted the feature/task-6.1-report-generator branch July 20, 2025 19:45
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2 participants