Release v1.0.10: Enhanced Device Emulation with 143 Device Presets#191
Release v1.0.10: Enhanced Device Emulation with 143 Device Presets#191executeautomation merged 2 commits intomainfrom
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Major Features: - Device preset support for playwright_resize (143 devices) - Portrait/landscape orientation support - Automatic user-agent, touch, and device pixel ratio emulation - Natural language support for AI assistants - Comprehensive documentation and prompt guides New Files: - src/tools/browser/resize.ts - Enhanced resize tool - src/__tests__/tools/browser/resize.test.ts - 23 comprehensive tests - docs/docs/playwright-web/Resize-Prompts-Guide.md - Natural language guide - docs/docs/playwright-web/Device-Quick-Reference.md - Quick reference - scripts/list-devices.cjs - Device discovery helper - CHANGELOG.md - Version history tracking Updated Files: - package.json - Bumped to v1.0.10 - README.md - Added v1.0.10 highlights - docs/docs/release.mdx - Complete release notes - docs/docs/playwright-web/Supported-Tools.mdx - Enhanced documentation - src/tools.ts - Updated tool definition - src/toolHandler.ts - Integrated resize tool - src/tools/browser/index.ts - Exported resize tool - src/__tests__/tools.test.ts - Updated schema tests Testing: - All 134 tests passing (111 existing + 23 new) - 98% code coverage for resize.ts - Device preset, orientation, and validation tests Backward Compatible: - Manual width/height dimensions still work - No breaking changes to existing code - Optional device parameter
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Review Summary
This PR introduces device emulation capabilities to the playwright_resize tool, which is a valuable enhancement. However, there are critical issues that must be addressed before merging:
🚨 Critical Issues
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Inconsistent Error Handling: The resize tool has mixed error handling patterns - device validation returns error responses while dimension validation throws errors. This creates unpredictable behavior and will cause test failures.
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Test-Implementation Mismatch: Tests expect error responses but the implementation throws errors for validation failures, which will cause the test suite to fail.
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Runtime Safety: The device listing script lacks null checks for device.viewport, which could cause crashes if any device lacks viewport configuration.
✅ Positive Aspects
- Comprehensive device preset support (143 devices)
- Excellent test coverage with 23 new tests
- Backward compatibility maintained
- Well-structured documentation and examples
- Natural language support for AI assistants
🔧 Required Fixes
The error handling inconsistency must be resolved by standardizing on error responses throughout the tool. The test expectations also need to be updated to match the actual implementation behavior.
📊 Overall Assessment
While this is a feature-rich enhancement with good documentation and testing, the critical error handling issues prevent safe merging. Once the error handling is standardized and tests are aligned, this will be a valuable addition to the codebase.
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| if (width <= 0 || height <= 0) { | ||
| throw new Error("Width and height must be positive integers"); | ||
| } | ||
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| if (width > 7680 || height > 4320) { | ||
| throw new Error("Width and height must not exceed 7680x4320 (8K resolution)"); | ||
| } |
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🛑 Logic Error: Inconsistent error handling between validation paths creates unpredictable behavior. Manual dimension validation throws errors while device validation returns error responses, causing different exception handling flows.
| if (width <= 0 || height <= 0) { | |
| throw new Error("Width and height must be positive integers"); | |
| } | |
| if (width > 7680 || height > 4320) { | |
| throw new Error("Width and height must not exceed 7680x4320 (8K resolution)"); | |
| } | |
| // Validate dimensions | |
| if (width <= 0 || height <= 0) { | |
| return createErrorResponse("Width and height must be positive integers"); | |
| } | |
| if (width > 7680 || height > 4320) { | |
| return createErrorResponse("Width and height must not exceed 7680x4320 (8K resolution)"); | |
| } |
| test('should reject negative width', async () => { | ||
| const args = { width: -100, height: 600 }; | ||
| const result = await resizeTool.execute(args, mockContext); | ||
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| expect(result.isError).toBe(true); | ||
| expect(result.content[0].text).toContain('Width and height must be positive integers'); | ||
| }); |
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Test expectations don't match implementation behavior. Tests expect error responses but the resize tool throws errors for validation failures, which will cause test failures.
| test('should reject negative width', async () => { | |
| const args = { width: -100, height: 600 }; | |
| const result = await resizeTool.execute(args, mockContext); | |
| expect(result.isError).toBe(true); | |
| expect(result.content[0].text).toContain('Width and height must be positive integers'); | |
| }); | |
| test('should reject negative width', async () => { | |
| const args = { width: -100, height: 600 }; | |
| // Expect the tool to throw an error, not return an error response | |
| await expect(resizeTool.execute(args, mockContext)).rejects.toThrow('Width and height must be positive integers'); | |
| }); |
| return; | ||
| } | ||
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| const device = devices[name]; |
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🛑 Crash Risk: Missing null check for device.viewport could cause runtime errors if any device in Playwright's device registry lacks a viewport property.
| const device = devices[name]; | |
| const device = devices[name]; | |
| if (!device || !device.viewport) { | |
| console.warn(`Warning: Device "${name}" has no viewport configuration`); | |
| return; | |
| } |
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Major Features:
New Files:
Updated Files:
Testing:
Backward Compatible: