XHS MCP

#!/usr/bin/env node /** * Test script for title width validation * * Usage: * node tests/integration/title-validation.test.js * npm test */ // Import directly from source for testing import stringWidth from 'string-width'; // Inline implementation for testing const XHS_TITLE_CONSTRAINTS = { MAX_WIDTH: 40, MAX_LENGTH: 20, }; function getTitleWidth(title) { return stringWidth(title); } function calculateRemainingTitleWidth(title) { const currentWidth = getTitleWidth(title); return Math.max(0, XHS_TITLE_CONSTRAINTS.MAX_WIDTH - currentWidth); } function validateTitleWidth(title) { if (!title) { return { valid: false, width: 0, maxWidth: XHS_TITLE_CONSTRAINTS.MAX_WIDTH, message: 'Title cannot be empty', suggestion: 'Please provide a valid title', }; } const width = stringWidth(title); if (width > XHS_TITLE_CONSTRAINTS.MAX_WIDTH) { return { valid: false, width, maxWidth: XHS_TITLE_CONSTRAINTS.MAX_WIDTH, message: `Title width exceeds limit: ${width} units (max: ${XHS_TITLE_CONSTRAINTS.MAX_WIDTH} units)`, suggestion: `Current title is too long. CJK characters count as 2 units, English/numbers as 1 unit. Please shorten your title.`, }; } return { valid: true, width, maxWidth: XHS_TITLE_CONSTRAINTS.MAX_WIDTH, }; } function truncateTitleToWidth(title, maxWidth = 40) { if (getTitleWidth(title) <= maxWidth) { return title; } let truncated = ''; let currentWidth = 0; for (const char of title) { const charWidth = stringWidth(char); if (currentWidth + charWidth > maxWidth) { break; } truncated += char; currentWidth += charWidth; } return truncated; } function getTitleWidthBreakdown(title) { const totalWidth = getTitleWidth(title); const breakdown = []; for (const char of title) { const charWidth = stringWidth(char); let type = 'Other'; const code = char.charCodeAt(0); if (char.match(/[\u4e00-\u9fff\u3400-\u4dbf\uf900-\ufaff]/)) { type = 'CJK'; } else if (code < 128) { type = 'ASCII'; } else if (char.match(/[\u{1F300}-\u{1F9FF}]/u)) { type = 'Emoji'; } breakdown.push({ char, width: charWidth, type }); } return { title, totalWidth, totalChars: title.length, maxWidth: XHS_TITLE_CONSTRAINTS.MAX_WIDTH, remaining: calculateRemainingTitleWidth(title), valid: totalWidth <= XHS_TITLE_CONSTRAINTS.MAX_WIDTH, breakdown, }; } console.log('🧪 Testing Title Width Validation\n'); console.log(`XHS Title Constraints: Max ${XHS_TITLE_CONSTRAINTS.MAX_WIDTH} units\n`); console.log('='.repeat(60)); // Test cases const testCases = [ { title: 'Hello World', description: 'English only', }, { title: '你好世界', description: 'Chinese only', }, { title: 'Hello世界', description: 'Mixed English + Chinese', }, { title: '👋Hello世界🌍', description: 'Emoji + Mixed', }, { title: '这是一个很长的标题', description: 'Long Chinese title', }, { title: '这是一个非常非常非常非常非常长的标题', description: 'Too long Chinese title', }, { title: 'A'.repeat(50), description: 'Very long English title', }, { title: '中'.repeat(25), description: 'Too many Chinese characters', }, ]; console.log('\n📊 Test Results:\n'); testCases.forEach((testCase, index) => { const { title, description } = testCase; const result = validateTitleWidth(title); const width = getTitleWidth(title); const remaining = calculateRemainingTitleWidth(title); console.log(`\nTest ${index + 1}: ${description}`); console.log('─'.repeat(60)); console.log(`Title: "${title}"`); console.log(`Length: ${title.length} characters`); console.log(`Width: ${width} units (max: ${result.maxWidth})`); console.log(`Remaining: ${remaining} units`); console.log(`Status: ${result.valid ? '✅ Valid' : '❌ Invalid'}`); if (!result.valid) { console.log(`\n⚠️ ${result.message}`); console.log(`💡 ${result.suggestion}`); // Show truncated version const truncated = truncateTitleToWidth(title); console.log(`\n✂️ Truncated: "${truncated}"`); console.log(` Width: ${getTitleWidth(truncated)} units`); } }); // Detailed breakdown example console.log('\n\n' + '='.repeat(60)); console.log('📝 Detailed Width Breakdown Example\n'); const exampleTitle = 'Hello世界👋ABC'; const breakdown = getTitleWidthBreakdown(exampleTitle); console.log(`Title: "${breakdown.title}"`); console.log(`Total Characters: ${breakdown.totalChars}`); console.log(`Total Width: ${breakdown.totalWidth} units`); console.log(`Remaining: ${breakdown.remaining} units`); console.log(`Valid: ${breakdown.valid ? '✅' : '❌'}\n`); console.log('Character Breakdown:'); console.log('─'.repeat(60)); breakdown.breakdown.forEach(({ char, width, type }) => { console.log(` '${char}' → ${width} unit(s) [${type}]`); }); // Edge cases console.log('\n\n' + '='.repeat(60)); console.log('🔬 Edge Cases\n'); const edgeCases = [ { title: '', description: 'Empty string' }, { title: ' ', description: 'Single space' }, { title: ' ', description: 'Multiple spaces' }, { title: '\n\t', description: 'Whitespace characters' }, { title: '🎉'.repeat(20), description: 'Many emojis' }, ]; edgeCases.forEach(({ title, description }) => { const result = validateTitleWidth(title); console.log(`${description}: ${result.valid ? '✅' : '❌'} (width: ${result.width})`); }); // Width calculation comparison console.log('\n\n' + '='.repeat(60)); console.log('📏 Width Calculation Examples\n'); const widthExamples = [ 'A', // 1 unit '中', // 2 units 'Hello', // 5 units '你好', // 4 units (2*2) 'Hello世界', // 10 units (5 + 2 + 2 + 1) '👋', // 2 units 'A中B', // 4 units (1 + 2 + 1) ]; widthExamples.forEach(text => { const width = getTitleWidth(text); console.log(`"${text.padEnd(15)}" → ${width.toString().padStart(2)} units`); }); // Practical examples console.log('\n\n' + '='.repeat(60)); console.log('💼 Practical Examples\n'); const practicalExamples = [ '今日美食分享', '春天来了🌸', 'My Travel Diary', '2024年终总结报告', 'iPhone 15 Pro Max开箱', '如何在30天内学会编程', ]; practicalExamples.forEach(title => { const result = validateTitleWidth(title); const icon = result.valid ? '✅' : '❌'; console.log(`${icon} "${title}" (${result.width}/${result.maxWidth} units)`); }); console.log('\n' + '='.repeat(60)); console.log('\n✨ All tests completed!\n'); console.log('💡 Tips:'); console.log(' - CJK characters (中文/日文/韓文): 2 units each'); console.log(' - ASCII characters (English/numbers): 1 unit each'); console.log(' - Emojis: typically 2 units'); console.log(` - Maximum: ${XHS_TITLE_CONSTRAINTS.MAX_WIDTH} units\n`);