E2e UI Research

UI E2E Test Research Command

Prerequisites

• ✅ Frontend server must be already running
• ✅ Playwright MCP server must be running

User Input

$ARGUMENTS

Consider any additional context from user input (if not empty). Port and base URL will be extracted from playwright.config.ts.

Overview

This command performs comprehensive UI E2E test research including actual browser exploration via Playwright MCP.

Key Features

• Actual Browser Exploration: Direct app manipulation via Playwright MCP
• Codebase Analysis: Static analysis to understand routes and components
• Bilingual Documentation: Simultaneous Korean/English version generation
• Business Domain Understanding: Backend analysis for domain context
• Always Create Fresh: Delete existing docs and create completely new ones

Execution Steps

1. Preparation and Context Gathering

Detect Project Type and Configuration

Read playwright.config.ts (or .js) and package.json together:

From playwright.config.ts:

• Base URL and port (from webServer.url or use.baseURL)
• Test directory location (from testDir or testMatch)
• Browser configuration and test settings

From package.json (in same directory as playwright.config.ts):

• Framework detection via dependencies: next, react, vue, svelte, @angular/core, etc.
• Build tools: vite, webpack, turbopack, etc.

2. Analyze Existing UI E2E Test Files (For Context Only)

Use playwright.config.ts to locate test files:

• Read testDir or testMatch from playwright.config to find test location
• If config specifies patterns, use those (e.g., tests/e2e/**/*.spec.ts)
• Fallback: If not found in config, search with Glob

Analyze existing tests:

• Read existing test case descriptions (describe/test/it) all to understand coverage
• Understand test patterns and structure
• Important: Do NOT read existing docs - will delete and recreate

3. Static Codebase Analysis

Frontend Structure Analysis:

• Find route definitions with Glob (adapt patterns to project structure)
• Read main page components
• Map user flows and interactions
• List main UI components and features

4. Playwright MCP Actual Browser Exploration (Required)

This is the most important step! Code analysis alone cannot reveal actual user experience.

Get base URL from playwright.config.ts:

• Read webServer.url or use.baseURL to get the application URL
• Extract port number from the URL
• If not found in config, ask user to provide base URL

4.1 Initial Access and Basic Structure Understanding

browser_navigate: {baseURL from config}
browser_snapshot: Capture initial page DOM structure

• Analyze main page structure
• Identify navigation menu elements
• List main links and buttons

4.2 Major Page Traversal

Based on route list identified from code:

browser_navigate: {baseURL}/{route}
browser_snapshot: Capture page DOM structure

• Identify interactive elements on each page
• Check dynamic elements (modals, toasts, dialogs)
• Understand navigation flow between pages

4.3 User Flow Experiments

Simulate main workflows:

• Login/logout (if exists)
• CRUD operations
• Form submission and validation
• Modal/dialog interactions
• Search and filtering
• Pagination

5. Define Test Scenarios

Integrate Code Analysis + Browser Exploration Results:

Mark source for each scenario:

• Found via code analysis
• Found via browser exploration
• Found via both

6. Verify Against Existing Tests

After defining test scenarios, cross-check with existing E2E tests:

• Compare defined scenarios with existing test cases
• Mark scenarios as:
  • New scenario (not covered)
  • Already implemented (skip or note in docs)
  • Partial coverage (extend existing test)

Prioritize (Critical/High/Medium):

• Critical: Core functionality where failure breaks the app
• High: Important features used frequently
• Medium: Nice-to-have features

7. Generate Completely Fresh Bilingual Documentation

Files to Create:

• docs/e2e-ui/test-targets.ko.md (Korean)
• docs/e2e-ui/test-targets.md (English)

Important - Existing Document Handling:

• If existing docs exist, completely delete and recreate
• Do not reference past content (only reference test file cases)
• Always start from clean slate

Key Rules

Required Steps

1. Read configuration first - Extract from playwright.config.ts and package.json
2. Browser exploration - Use Playwright MCP for actual testing
3. Fresh documentation - Delete existing docs and create new ones
4. Verify against existing tests - Read test file cases to prevent duplicates
5. Bilingual output - Generate both ko.md and .md versions

Guidelines

Do:

• Use values from playwright.config.ts (not hardcoded URLs)
• Adapt flexibly to project structure
• Group scenarios by page/feature
• Include both happy paths and error cases
• Mark source and coverage status

Avoid:

• Skipping configuration file reading
• Referencing old docs (create fresh)
• Reporting bugs during research (save for execution phase)
• Vague or untestable scenarios
• Single language documentation

Bug Discovery Handling Guidelines

Important: Even if bugs are found during Playwright MCP browser exploration:

DON'T:

• Report bugs or provide feedback to user
• Suggest bug fixes
• Suggest bug workarounds in test scenarios

DO:

• Write scenarios for buggy features as they should work normally
• Include "currently broken but should work" features in test targets
• Bugs will be naturally discovered and fixed during UI E2E test execution phase

Completion Report

After research completion, provide summary to user:

## UI E2E Test Research Complete

### Findings

- **Framework**: {React/Next.js/Vue/etc}
- **Pages Explored**: {X count}
- **User Flows Found**: {Y count}
- **Existing UI E2E Tests**: {Z count}

### Test Scenarios

- **Critical**: {N count}
- **High**: {M count}
- **Medium**: {K count}
- **Total**: {N+M+K count}

### Generated Documents

- `docs/e2e-ui/test-targets.ko.md` (Korean)
- `docs/e2e-ui/test-targets.md` (English)

### Coverage Gaps

- {main gap 1}
- {main gap 2}

### Next Steps

You can implement test scenarios as actual Playwright tests with `/e2e-ui-execute` command.

Execute

Start working according to the guidelines above.

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