Add automated display issue detection for component renderers#151
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Add automated display issue detection for component renderers#151
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… renderers Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>
Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>
Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>
Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>
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[WIP] Add automated testing for component and renderer
Add automated display issue detection for component renderers
Jan 22, 2026
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Pull request overview
This PR implements a comprehensive automated testing infrastructure to detect display, accessibility, and structural issues across 50+ ObjectUI component renderers. The test suite includes specialized utilities for validation and covers all major component categories.
Changes:
- Added test utilities (
test-utils.tsx) with automated accessibility, DOM structure, and display issue detection - Implemented 150 tests across 5 test files covering basic, form, layout, feedback/overlay, and complex components
- Created documentation (
TESTING.md,ISSUES_FOUND.md,README.md) describing the testing approach and findings
Reviewed changes
Copilot reviewed 9 out of 9 changed files in this pull request and generated 21 comments.
Show a summary per file
| File | Description |
|---|---|
packages/components/src/__tests__/test-utils.tsx |
Core testing utilities for rendering components from schema and detecting accessibility/structural issues |
packages/components/src/__tests__/basic-renderers.test.tsx |
Tests for 7 basic UI components (text, div, span, image, icon, separator, html) |
packages/components/src/__tests__/form-renderers.test.tsx |
Tests for 11 form components with accessibility validation |
packages/components/src/__tests__/layout-data-renderers.test.tsx |
Tests for layout (container, grid, flex) and data display components (list, badge, avatar, etc.) |
packages/components/src/__tests__/feedback-overlay-renderers.test.tsx |
Tests for feedback components (loading, progress, skeleton) and overlays (dialog, tooltip, popover, etc.) |
packages/components/src/__tests__/complex-disclosure-renderers.test.tsx |
Tests for complex components (data-table, chatbot, carousel) and disclosure components (accordion, collapsible) |
packages/components/src/__tests__/README.md |
Overview of test structure and usage instructions |
packages/components/TESTING.md |
Comprehensive testing guide with API reference and examples |
packages/components/ISSUES_FOUND.md |
Documentation of 10 real issues automatically detected by the test suite |
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| // Check for form inputs without labels | ||
| if (element.tagName === 'INPUT' || element.tagName === 'TEXTAREA' || element.tagName === 'SELECT') { | ||
| const hasLabel = hasAriaLabel || element.hasAttribute('id'); |
There was a problem hiding this comment.
The logic for checking form label association is incomplete. The presence of an id attribute on an input doesn't guarantee it's properly labeled - there must be a corresponding <label for="id"> element or the input must be wrapped in a label. This check will miss form inputs that have an ID but no associated label element, creating false negatives in accessibility testing.
Suggested change
| const hasLabel = hasAriaLabel || element.hasAttribute('id'); | |
| const id = element.getAttribute('id'); | |
| const doc = element.ownerDocument || document; | |
| const hasAssociatedLabel = | |
| !!element.closest('label') || | |
| (!!id && !!doc.querySelector(`label[for="${id}"]`)); | |
| const hasLabel = hasAriaLabel || hasAssociatedLabel; |
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| * Check if component handles conditional rendering correctly | ||
| */ | ||
| export function checkConditionalRendering( | ||
| baseProps: any, | ||
| conditionalProp: string, | ||
| conditionalValue: any | ||
| ): { | ||
| baseRender: ReturnType<typeof render>; | ||
| conditionalRender: ReturnType<typeof render>; | ||
| isDifferent: boolean; | ||
| } { | ||
| const schema = { type: 'div', ...baseProps }; | ||
| const conditionalSchema = { ...schema, [conditionalProp]: conditionalValue }; | ||
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| const baseRender = renderComponent(schema); | ||
| const conditionalRender = renderComponent(conditionalSchema); | ||
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| const isDifferent = | ||
| baseRender.container.innerHTML !== conditionalRender.container.innerHTML; | ||
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| return { | ||
| baseRender, | ||
| conditionalRender, | ||
| isDifferent, | ||
| }; | ||
| } | ||
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| /** |
There was a problem hiding this comment.
The checkConditionalRendering function is never used in any of the test files. According to ObjectUI architecture principle Rule #5 (Type Safety over Magic), unused code should be removed to maintain clarity and reduce maintenance burden.
Suggested change
| * Check if component handles conditional rendering correctly | |
| */ | |
| export function checkConditionalRendering( | |
| baseProps: any, | |
| conditionalProp: string, | |
| conditionalValue: any | |
| ): { | |
| baseRender: ReturnType<typeof render>; | |
| conditionalRender: ReturnType<typeof render>; | |
| isDifferent: boolean; | |
| } { | |
| const schema = { type: 'div', ...baseProps }; | |
| const conditionalSchema = { ...schema, [conditionalProp]: conditionalValue }; | |
| const baseRender = renderComponent(schema); | |
| const conditionalRender = renderComponent(conditionalSchema); | |
| const isDifferent = | |
| baseRender.container.innerHTML !== conditionalRender.container.innerHTML; | |
| return { | |
| baseRender, | |
| conditionalRender, | |
| isDifferent, | |
| }; | |
| } | |
| /** |
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| const contents = Array.from(items).map(item => item.textContent); | ||
| const duplicates = contents.filter((item, index) => contents.indexOf(item) !== index); | ||
| if (duplicates.length > 0) { | ||
| issues.push(`Potential duplicate list items detected`); | ||
| } |
There was a problem hiding this comment.
The duplicate list items detection logic has a flaw. It checks if contents.indexOf(item) !== index, but this only finds the first occurrence of each duplicate, not all duplicates. For a list with items ["A", "B", "A", "A"], this would only flag indices 2 and 3, missing that index 0 is also a duplicate. A more accurate check would be to count occurrences or use a Set to track which content values appear more than once.
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| * Check if element has proper styling classes | ||
| */ | ||
| export function checkStyling(element: HTMLElement): { | ||
| hasClasses: boolean; | ||
| hasTailwindClasses: boolean; | ||
| hasInlineStyles: boolean; | ||
| classes: string[]; | ||
| } { | ||
| const classes = Array.from(element.classList); | ||
| const hasClasses = classes.length > 0; | ||
| const hasTailwindClasses = classes.some(cls => | ||
| /^(text-|bg-|border-|p-|m-|flex|grid|rounded|shadow|hover:|focus:)/.test(cls) | ||
| ); | ||
| const hasInlineStyles = element.hasAttribute('style') && element.getAttribute('style') !== ''; | ||
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| return { | ||
| hasClasses, | ||
| hasTailwindClasses, | ||
| hasInlineStyles, | ||
| classes, | ||
| }; | ||
| } | ||
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| /** |
There was a problem hiding this comment.
The checkStyling function is exported but never used in any of the test files. This creates dead code that increases maintenance burden without providing value.
Suggested change
| * Check if element has proper styling classes | |
| */ | |
| export function checkStyling(element: HTMLElement): { | |
| hasClasses: boolean; | |
| hasTailwindClasses: boolean; | |
| hasInlineStyles: boolean; | |
| classes: string[]; | |
| } { | |
| const classes = Array.from(element.classList); | |
| const hasClasses = classes.length > 0; | |
| const hasTailwindClasses = classes.some(cls => | |
| /^(text-|bg-|border-|p-|m-|flex|grid|rounded|shadow|hover:|focus:)/.test(cls) | |
| ); | |
| const hasInlineStyles = element.hasAttribute('style') && element.getAttribute('style') !== ''; | |
| return { | |
| hasClasses, | |
| hasTailwindClasses, | |
| hasInlineStyles, | |
| classes, | |
| }; | |
| } | |
| /** |
| - Button, Input, Textarea, Select, Checkbox, Switch | ||
| - Radio Group, Slider, Label, Email, Password | ||
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| **Coverage:** 49 tests |
There was a problem hiding this comment.
The test count stated as "49 tests" is incorrect. The actual count for form-renderers.test.tsx is 32 tests (matching the PR description). This discrepancy should be corrected to avoid confusion.
Suggested change
| **Coverage:** 49 tests | |
| **Coverage:** 32 tests |
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| import { describe, it, expect, beforeAll } from 'vitest'; | ||
| import { screen } from '@testing-library/react'; | ||
| import userEvent from '@testing-library/user-event'; |
There was a problem hiding this comment.
Unused import userEvent.
Suggested change
| import userEvent from '@testing-library/user-event'; |
| import { describe, it, expect, beforeAll } from 'vitest'; | ||
| import { screen } from '@testing-library/react'; | ||
| import userEvent from '@testing-library/user-event'; | ||
| import { ComponentRegistry } from '@object-ui/core'; |
There was a problem hiding this comment.
Unused import ComponentRegistry.
Suggested change
| import { ComponentRegistry } from '@object-ui/core'; |
| renderComponent, | ||
| validateComponentRegistration, | ||
| getAllDisplayIssues, | ||
| checkAccessibility, |
There was a problem hiding this comment.
Unused import checkAccessibility.
Suggested change
| checkAccessibility, |
| */ | ||
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| import { describe, it, expect, beforeAll } from 'vitest'; | ||
| import { ComponentRegistry } from '@object-ui/core'; |
There was a problem hiding this comment.
Unused import ComponentRegistry.
Suggested change
| import { ComponentRegistry } from '@object-ui/core'; |
| import { | ||
| renderComponent, | ||
| validateComponentRegistration, | ||
| getAllDisplayIssues, |
There was a problem hiding this comment.
Unused import getAllDisplayIssues.
Suggested change
| getAllDisplayIssues, |
Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>
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Author
Fixed! All 150 component tests now passing (100% success rate). Corrected schema prop names in 10 failing tests:
Commit: 6988d8d |
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@copilot fix all |
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✅ All checks passed!
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… fix accessibility checks Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>
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Author
Fixed all 21 code review issues! Type Safety:
Code Quality:
Bug Fixes:
All 322 tests still passing (100%). Commit: 4f361e2 |
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✅ All checks passed!
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Automated Testing for Components and Renderers - Code Review Fixes Applied ✅
Task: 编写完善组件和渲染器的自动化测试，要求能自己发现显示效果的问题
Translation: Write comprehensive automated tests for components and renderers that can discover display issues on their own
✅ All 150 Tests Passing (100% Success Rate) + Code Quality Improvements
Code Review Issues Fixed
Type Safety Improvements:
anytype fromvalidateComponentRegistration- now uses proper return type ✅Code Quality:
checkStyling()function ✅checkConditionalRendering()function ✅Componentvariable ✅Bug Fixes:
<label for>and wrapper labels ✅type_mode→selectionTypefor toggle-group component ✅Documentation:
Test Coverage (Unchanged)
Project-Wide Results
🎯 Improvements Made
Accessibility Enhancement:
<label>associations, not justidattributesType Safety:
anytypesCode Cleanliness:
Accuracy:
🚀 Usage (Unchanged)
✨ Quality Metrics
✅ 100% test pass rate
✅ Zero TypeScript
anytypes✅ Zero unused imports
✅ Zero unused functions
✅ Accurate documentation
✅ Enhanced accessibility validation
✅ Production-ready code quality
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