feat: add macOS settings management and enhance test coverage

[HagaSpa]

Background / 背景

Added comprehensive macOS system settings management to the dotfiles repository and enhanced the testing infrastructure. This ensures consistent macOS configurations across different machines and provides robust validation of dotfile deployment through actual execution testing rather than dry-run validation.

macOS システム設定管理を dotfiles リポジトリに包括的に追加し、テストインフラを強化しました。これにより異なるマシン間で一貫した macOS 設定を保証し、ドライラン検証ではなく実際の実行テストを通じて dotfile デプロイメントの堅牢な検証を提供します。

Changes / 変更内容

• Settings Management: Created settings.sh script for macOS system preferences (ApplePressAndHoldEnabled configuration)

• Font Support: Added font-hack-nerd-font to Brewfile for enhanced terminal typography

• Test Infrastructure: Implemented comprehensive GitHub Actions testing for settings.sh

• Enhanced Test Coverage: Modified test-link.sh to perform actual symbolic link creation in isolated environment

• CI/CD Integration: Updated workflows to include settings validation and real execution testing

• 設定管理: macOS システム設定用の settings.sh スクリプトを作成（ApplePressAndHoldEnabled 設定）

• フォントサポート: ターミナルタイポグラフィ強化のため font-hack-nerd-font を Brewfile に追加

• テストインフラ: settings.sh の包括的な GitHub Actions テストを実装

• テストカバレッジ強化: test-link.sh を変更して隔離環境での実際のシンボリックリンク作成を実行

• CI/CD 統合: 設定検証と実際の実行テストを含むようワークフローを更新

Impact scope / 影響範囲

• New Capability: macOS system configuration automation and management

• Improved Testing: Enhanced CI/CD pipeline with real execution validation instead of syntax-only checks

• Better User Experience: Consistent terminal font rendering through Nerd Font integration

• Zero Breaking Changes: All additions are backward compatible with existing functionality

• 新機能: macOS システム設定の自動化と管理

• テスト改善: 構文チェックのみではなく実際の実行検証による CI/CD パイプライン強化

• ユーザー体験向上: Nerd Font 統合による一貫したターミナルフォント表示

• 破壊的変更なし: すべての追加は既存機能と後方互換性を保持

Testing / 動作確認

• settings.sh script validation and actual execution / settings.sh スクリプト検証と実際の実行
• ApplePressAndHoldEnabled setting verification / ApplePressAndHoldEnabled 設定検証
• Enhanced symbolic link testing with real link creation / 実際のリンク作成による強化されたシンボリックリンクテスト
• Isolated test environment with temporary HOME / 一時的な HOME による隔離テスト環境
• GitHub Actions workflow integration / GitHub Actions ワークフロー統合
• Brewfile validation with font entry / フォントエントリーでの Brewfile 検証

🤖 Generated with Claude Code

[claude]

Claude finished @HagaSpa's task —— View job

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PR Review: macOS System Settings Management

I've completed a thorough review of this PR. Here's my comprehensive feedback:

Todo List:

• Read and analyze settings.sh script
• Review GitHub Actions test script
• Check workflow integration changes
• Review Brewfile modification
• Provide comprehensive feedback on code quality, bugs, performance, security, and test coverage

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Code Quality & Best Practices ✅

Overall Assessment: The code follows good shell scripting practices and is well-structured.

Positive aspects:

• Clean, readable shell scripts with proper shebangs
• Good use of set -e in test script for fail-fast behavior
• Descriptive comments and echo statements for user feedback
• Proper error handling with exit codes

Minor suggestions:

• Consider adding set -e to settings.sh for consistency and fail-fast behavior
• The global defaults write (defaults write -g) is correct but consider documenting that -g means global/NSGlobalDomain

Potential Bugs & Issues ⚠️

settings.sh:9

defaults write -g ApplePressAndHoldEnabled -bool false

• Issue: No error handling if defaults command fails
• Recommendation: Add error checking or use set -e

test-settings.sh:52

press_hold_setting=$(defaults read -g ApplePressAndHoldEnabled 2>/dev/null || echo "not set")

• Good: Properly handles case where setting doesn't exist
• Potential issue: The verification only checks for "0" but defaults might return different boolean representations

Performance Considerations ✅

No performance concerns identified:

• Scripts are lightweight and execute quickly
• Minimal system calls
• Efficient test validation approach

Security Concerns 🔒

Low Risk - Defensive Operations Only:

• ✅ Scripts only modify user preferences, not system-level settings
• ✅ No network operations or external downloads
• ✅ No user input processing that could lead to injection
• ✅ Uses defaults command appropriately for macOS preference management
• ✅ Test script properly validates before execution

Recommendation: Consider adding a confirmation prompt or dry-run option for settings.sh to give users visibility into what will be changed.

Test Coverage 🧪

Excellent test coverage:

• ✅ Syntax validation with bash -n
• ✅ Executable permissions check
• ✅ Shebang validation
• ✅ Command availability verification
• ✅ Actual execution testing
• ✅ Setting verification after application
• ✅ Proper CI integration

Strengths:

• Comprehensive test script that validates both static and runtime aspects
• Good separation of concerns between validation and functional testing
• Proper cleanup considerations in CI workflow

Architecture & Integration 🏗️

Well-integrated with existing dotfiles structure:

• ✅ Follows repository patterns
• ✅ Proper CI integration with existing workflow
• ✅ Logical placement of test scripts
• ✅ Brewfile addition is appropriate for font dependency

Brewfile change (line 12):

cask "font-hack-nerd-font"

• ✅ Good addition for better terminal rendering
• ✅ Follows existing Brewfile format

Recommendations for Enhancement

1. Error Handling: Add set -e to settings.sh for consistency
2. User Experience: Consider adding a --dry-run flag to show what would be changed
3. Extensibility: The script structure makes it easy to add more settings in the future
4. Documentation: Consider adding inline comments about what the setting does for users

Summary

This is a well-implemented feature that follows good practices:

• ✅ Clean, readable code
• ✅ Comprehensive testing
• ✅ Proper CI integration
• ✅ No security concerns
• ✅ Good architectural fit

The implementation is production-ready with only minor suggestions for improvement. Great work on the thorough testing approach!

[claude]

Claude finished @HagaSpa's task —— View job

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PR Review: macOS System Settings Management

I've completed a comprehensive review of this PR. Here's my analysis focusing on the areas you requested:

Todo List:

• Read and analyze all changed files
• Review settings.sh implementation
• Review test-settings.sh testing approach
• Check GitHub Actions workflow integration
• Review Brewfile modification
• Provide comprehensive feedback on code quality, bugs, performance, security, and test coverage

---

Code Quality & Best Practices ✅

Overall Assessment: The implementation follows good shell scripting practices and maintains consistency with the existing codebase.

Strengths:

• settings.sh:1: Proper shebang #!/bin/bash
• test-settings.sh:3: Good use of set -e for fail-fast behavior
• settings.sh:3-4: Clear documentation with descriptive comments
• Clean, readable code structure with proper echo statements for user feedback
• Follows the repository's modular approach to dotfiles management

Areas for Enhancement:

• settings.sh: Consider adding set -e for consistency with test script and fail-fast behavior
• settings.sh:9: The defaults write -g command is correct, but consider adding a comment explaining that -g means NSGlobalDomain/global settings

Potential Bugs & Issues ⚠️

Minor Issues Identified:

1. Error Handling Gap (settings.sh:9):

defaults write -g ApplePressAndHoldEnabled -bool false

• Issue: No error handling if defaults command fails
• Impact: Script continues even if setting fails to apply
• Recommendation: Add set -e or explicit error checking

2. Boolean Verification (test-settings.sh:52-53):

press_hold_setting=$(defaults read -g ApplePressAndHoldEnabled 2>/dev/null || echo "not set")
if [ "$press_hold_setting" = "0" ]; then

• Good: Properly handles case where setting doesn't exist with error redirection
• Note: Correctly checks for "0" as defaults boolean false representation

Performance Considerations ✅

Excellent Performance Profile:

• Minimal system calls - only uses defaults command
• Fast execution - single system preference write
• Efficient test validation with proper command availability checks
• test-settings.sh:25-36: Smart command validation loop prevents unnecessary execution

Security Analysis 🔒

Security Assessment: LOW RISK - Defensive Operations Only

Positive Security Aspects:

• ✅ Limited Scope: Only modifies user preferences, not system-level settings
• ✅ No Network Operations: No external downloads or remote connections
• ✅ No User Input: No input processing that could lead to injection attacks
• ✅ Safe Commands: Uses defaults command appropriately for macOS preference management
• ✅ Defensive Testing: Test script validates execution environment before making changes

Security Best Practices Followed:

• test-settings.sh:30: Proper command existence validation with command -v
• test-settings.sh:52: Safe error handling with 2>/dev/null to prevent information leakage
• No hardcoded credentials or sensitive information

Recommendation: Consider adding a confirmation prompt or --dry-run option to give users visibility into what changes will be made.

Test Coverage Analysis 🧪

Exceptional Test Coverage - Best-in-Class:

Static Validation:

• ✅ test-settings.sh:8: Executable permissions verification
• ✅ test-settings.sh:16: Bash syntax validation with bash -n
• ✅ test-settings.sh:39: Shebang validation
• ✅ test-settings.sh:25-36: Command availability verification

Functional Testing:

• ✅ test-settings.sh:48: Actual script execution testing
• ✅ test-settings.sh:52-58: Post-execution setting verification
• ✅ test-settings.sh:53: Proper boolean value checking ("0" for false)

CI/CD Integration:

• ✅ test-scripts.yml:14,25: Added settings.sh to workflow triggers
• ✅ test-scripts.yml:50-51: Integrated into macOS test pipeline
• ✅ Proper cleanup with if: always() condition

Test Quality Highlights:

• Comprehensive coverage of both static and runtime validation
• Good separation of concerns between different test aspects
• Proper error handling and exit codes throughout

Architecture & Repository Integration 🏗️

Seamless Integration with Existing Patterns:

Consistency with Repository Structure:

• ✅ Follows established script naming conventions
• ✅ Proper placement in repository root alongside install.sh and link.sh
• ✅ Test script follows established pattern in .github/scripts/
• ✅ Brewfile:12: Font addition follows existing cask format

CI/CD Integration:

• ✅ test-scripts.yml:14,25: Proper path trigger configuration
• ✅ Maintains consistency with existing test job structure
• ✅ Appropriate placement in test sequence

Brewfile Enhancement:

cask "font-hack-nerd-font"

• ✅ Excellent addition for terminal rendering improvements
• ✅ Supports the repository's focus on developer productivity
• ✅ Follows existing Brewfile format and conventions

Recommendations for Future Enhancement

1. Error Handling: Add set -e to settings.sh for consistency with test script
2. User Experience: Consider adding verbose flag or dry-run capability
3. Extensibility: Current structure makes it easy to add more macOS settings
4. Documentation: Inline comments about setting effects would help future maintainers

Summary

Verdict: ✅ EXCELLENT IMPLEMENTATION - READY FOR MERGE

This PR demonstrates:

• High Code Quality with clean, readable implementation
• Comprehensive Testing exceeding typical standards
• Strong Security Posture with defensive-only operations
• Perfect Architectural Fit within existing repository patterns
• Exceptional CI/CD Integration with thorough validation

The implementation is production-ready with only minor suggestions for improvement. The testing approach is particularly commendable and serves as a model for future script additions.

Key Strengths:

• Thoughtful, incremental approach to macOS automation
• Excellent test coverage with both static and functional validation
• Strong integration with existing dotfiles patterns
• Security-conscious implementation

Great work on this feature! 🎉

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[claude]

Claude finished @HagaSpa's task —— View job

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PR Code Review: macOS System Settings Management

I've completed a comprehensive code review focusing on the areas you requested. Here's my analysis:

Todo List:

• Read and analyze settings.sh script
• Review test-settings.sh testing approach
• Check GitHub Actions workflow integration changes
• Review enhanced test-link.sh modifications
• Review Brewfile modification
• Provide comprehensive feedback on code quality, bugs, performance, security, and test coverage

---

Code Quality & Best Practices ✅

Overall Assessment: Excellent implementation following shell scripting best practices and maintaining consistency with existing codebase patterns.

Strengths:

• settings.sh:1: Proper shebang #!/bin/bash
• test-settings.sh:3: Excellent use of set -e for fail-fast behavior
• settings.sh:3-4: Clear documentation with descriptive comments
• Clean, readable code structure with proper user feedback via echo statements
• Follows the repository's modular approach perfectly
• test-link.sh:24-30: Sophisticated isolated testing environment with temporary HOME

Minor Enhancement Opportunity:

• settings.sh: Consider adding set -e for consistency with test scripts and fail-fast behavior

Potential Bugs & Issues ⚠️

Very Low Risk - Only Minor Issues Identified:

1. Error Handling (settings.sh:9):

defaults write -g ApplePressAndHoldEnabled -bool false

• Issue: No explicit error handling if defaults command fails
• Impact: Script continues silently even if setting fails to apply
• Recommendation: Add set -e or explicit error checking

2. Boolean Verification (test-settings.sh:52-53):

press_hold_setting=$(defaults read -g ApplePressAndHoldEnabled 2>/dev/null || echo "not set")
if [ "$press_hold_setting" = "0" ]; then

• Good: Properly handles missing settings with error redirection
• Correct: Accurately checks for "0" as macOS boolean false representation

Performance Considerations ✅

Excellent Performance Profile:

• Minimal overhead: Single defaults command execution
• Fast validation: Efficient command availability checks (test-settings.sh:25-36)
• Smart testing: Isolated environment prevents system pollution (test-link.sh:24-30)
• Efficient parsing: Good use of bash parameter expansion and grep patterns

Security Analysis 🔒

Security Assessment: EXCELLENT - Defensive Operations Only

Positive Security Aspects:

• ✅ Limited scope: Only modifies user preferences, not system-level settings
• ✅ No network operations: No external downloads or connections
• ✅ No user input: No input processing that could lead to injection
• ✅ Safe commands: Appropriate use of defaults for macOS preference management
• ✅ Defensive testing: Comprehensive validation before execution

Security Best Practices:

• test-settings.sh:30: Proper command existence validation with command -v
• test-settings.sh:52: Safe error handling with 2>/dev/null
• test-link.sh:25: Secure isolated testing with temporary directories
• No hardcoded credentials or sensitive information

Recommendation: Consider adding a --dry-run option for transparency.

Test Coverage Analysis 🧪

Outstanding Test Coverage - Industry Best Practice:

Static Validation:

• ✅ test-settings.sh:8: Executable permissions verification
• ✅ test-settings.sh:16: Bash syntax validation with bash -n
• ✅ test-settings.sh:39: Shebang validation
• ✅ test-settings.sh:25-36: Command availability verification

Functional Testing:

• ✅ test-settings.sh:48: Actual script execution testing
• ✅ test-settings.sh:52-58: Post-execution setting verification
• ✅ test-link.sh:30: Real symbolic link creation testing
• ✅ test-link.sh:34-43: Link verification with proper path expansion

Enhanced Test Infrastructure:

• ✅ test-link.sh:24-30: Isolated test environment with temporary HOME
• ✅ test-link.sh:59-66: Source file existence verification
• ✅ test-scripts.yml:50-51: Proper CI integration

Exceptional Quality:

• Comprehensive coverage of both static and runtime validation
• Real execution testing vs. dry-run validation
• Proper cleanup with if: always() conditions
• Smart environment isolation prevents test pollution

Architecture & Repository Integration 🏗️

Seamless Integration:

Consistency:

• ✅ Follows established script naming conventions
• ✅ Proper placement alongside install.sh and link.sh
• ✅ Test scripts follow repository patterns in .github/scripts/

CI/CD Integration:

• ✅ test-scripts.yml:14,25: Proper path trigger configuration
• ✅ test-scripts.yml:50-51: Well-integrated test step
• ✅ Maintains consistency with existing macOS test pipeline

Brewfile Enhancement:

+ cask "font-hack-nerd-font"

• ✅ Brewfile:12: Perfect addition for terminal typography
• ✅ Supports developer productivity focus
• ✅ Follows existing format conventions

Recommendations for Enhancement

1. Error Handling: Add set -e to settings.sh for consistency
2. User Experience: Consider --verbose or --dry-run flags
3. Documentation: Inline comments about setting effects would help
4. Extensibility: Current structure easily accommodates more macOS settings

Summary

Verdict: ✅ EXCELLENT IMPLEMENTATION - READY FOR MERGE

This PR demonstrates exceptional software engineering practices:

• 🏆 High Code Quality with clean, maintainable implementation
• 🛡️ Strong Security Posture with defensive-only operations
• 🧪 Outstanding Test Coverage exceeding industry standards
• 🏗️ Perfect Architectural Fit within existing patterns
• ⚡ Excellent Performance with minimal system impact

Key Highlights:

• Thoughtful approach to macOS system automation
• Sophisticated testing with real execution validation
• Strong CI/CD integration with proper isolation
• Security-conscious implementation with no risk vectors

The implementation is production-ready with only minor suggestions for improvement. The comprehensive testing approach serves as an excellent model for future script additions.

Recommended Action: Approve and merge - this is high-quality work! 🎉

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