- Remove getFixturePath and getConfigPath helper functions
- Replace all usages with direct path.join(__dirname, "fixtures", filename)
- Eliminate unnecessary abstraction for better clarity and directness

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

Co-Authored-By: Claude <noreply@anthropic.com>

- Add comprehensive test suite using configFilePath and node_modulesDir
- Create fake node_modules structure with custom rules and plugins
- Implement test-rule that detects TODO items in documents
- Implement test preset with multiple rules (test-rule and no-exclamation)
- Add mock @textlint/textlint-plugin-text and markdown plugins
- Add test fixtures with-todo.md and with-exclamation.md
- Add configuration files for custom rule and preset testing
- Verify that MCP server works with real textlint configurations
- Follow cli-snapshot pattern for isolated fixture-based testing

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

Co-Authored-By: Claude <noreply@anthropic.com>

- Add comprehensive snapshot testing framework for MCP server
- Implement type-safe input.json for MCP tool requests
- Create output.json snapshots with normalized timestamps and paths
- Add utilities for path normalization and timestamp masking
- Support UPDATE_SNAPSHOT=1 environment variable for snapshot updates
- Follow cli-snapshots pattern with directory-based test organization

Test cases included:
- basic-lint-file: Simple file linting with no errors
- custom-rule-todo: Custom rule testing with fixture configuration
- lint-text-basic: Text linting without configuration
- error-unsupported-extension: Error case with unsupported file extension

Benefits:
- Type-safe test input definition with TypeScript
- Deterministic snapshots with masked timestamps/paths
- Easy test case addition by creating new directories
- Clear separation of test data and test logic
- Cross-platform compatibility with path normalization

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

Co-Authored-By: Claude <noreply@anthropic.com>

- Replace 'any' types with 'unknown' in types.ts and snapshot-utils.ts
- Fix string concatenation to use template literals
- Add proper type annotations for object entries and arrays
- Ensure type safety throughout snapshot testing utilities

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

Co-Authored-By: Claude <noreply@anthropic.com>

- Create schemas.ts with TextlintMessageSchema definition
- Import and use TextlintMessageSchema consistently in MCP server
- Fix test failures by ensuring proper schema validation

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

Co-Authored-By: Claude <noreply@anthropic.com>

- Remove testInvalidSchema tool from MCP server
- Remove corresponding tests for the tool
- Simplify test count expectations in test suite

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

Co-Authored-By: Claude <noreply@anthropic.com>

- Enhanced path normalization for Windows/Unix compatibility
- Improved timestamp replacement in JSON strings
- Updated snapshot files to current format

Note: Snapshot tests may still fail on different platforms due to
timestamp variations - this is expected behavior for now.

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

Co-Authored-By: Claude <noreply@anthropic.com>

- snapshot-utils.tsでprefer-templateエラーを修正（文字列連結からテンプレートリテラルに変更）
- JSON文字列内のtimestamp正規化を改善
- content fieldに含まれるJSONのtimestamp値も正しく<timestamp>に置換されるように修正
- MCPスナップショットテストが全てパスするようになった

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

Co-Authored-By: Claude <noreply@anthropic.com>

- Enable TypeScript files (input.ts) for test input definition instead of input.json
- Add SnapshotInputFactory and SnapshotContext types for dynamic configuration
- Eliminate string placeholders like <rule_modules> with dynamic path resolution
- Inject actual paths via context.ruleModulesDir at runtime
- Improve type safety and IDE code completion
- Migrate all 4 existing snapshot tests to input.ts format
- Maintain backward compatibility with both input.json and input.ts support
- Remove legacy input.json files after successful migration

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

Co-Authored-By: Claude <noreply@anthropic.com>

…ment

- Replace complex regex-based path normalization with simple string replacement
- Use exact path matching with escapeRegExp to avoid cross-platform issues
- Eliminate Windows-specific logic by relying on Node.js path.relative()
- Significantly reduce code complexity while maintaining functionality
- Update snapshots with simplified path normalization
- More reliable across different operating systems and path formats

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

Co-Authored-By: Claude <noreply@anthropic.com>

- Replace complex regex-based path replacement with simple String.replaceAll()
- More reliable across platforms without regex escaping complexity
- Add fallback pattern matching for Windows absolute paths
- Remove unused escapeRegExp function
- Simplify path replacement logic with structured approach
- Better handling of edge cases in path normalization

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

Co-Authored-By: Claude <noreply@anthropic.com>

- Replace complex regex-based path replacement with simple replaceAll
- Use test-case names as placeholders (<test-case>/file.txt) instead of full paths
- This eliminates Windows/Unix path separator differences in JSON content
- Update snapshots with the new test-case-based placeholder format
- Simplify pathReplacer logic from ~100 lines to ~40 lines for better maintainability

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

Co-Authored-By: Claude <noreply@anthropic.com>

…ink/output.json+9

…ink/output.json+6