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fix(web): display '—' for missing data instead of NaN% or 0% (#678)
* fix(web): display '—' for missing data instead of NaN% or 0% (#633) - Add hasValidData validation for null/undefined/NaN - Display '—' for invalid trader.total_pnl_pct - Only show gap calculations when both values are valid - Prevents misleading users with 0% when data is missing Fixes #633 * test(web): add comprehensive unit tests for CompetitionPage NaN handling - Test data validation logic (null/undefined/NaN detection) - Test gap calculation with valid and invalid data - Test display formatting (shows '—' instead of 'NaN%') - Test leading/trailing message display conditions - Test edge cases (Infinity, very small/large numbers) All 25 test cases passed, covering: 1. hasValidData check (7 cases): valid/null/undefined/NaN/zero/negative 2. gap calculation (3 cases): valid data, invalid data, negative gap 3. display formatting (6 cases): positive/negative/null/undefined/NaN/zero 4. leading/trailing messages (5 cases): conditional display logic 5. edge cases (4 cases): Infinity, -Infinity, very small/large numbers Related to PR #678 - ensures missing data displays as '—' instead of 'NaN%'. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> --------- Co-authored-by: ZhouYongyou <128128010+zhouyongyou@users.noreply.github.com> Co-authored-by: Claude <noreply@anthropic.com>
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web/src/components/CompetitionPage.test.tsx
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329
web/src/components/CompetitionPage.test.tsx
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import { describe, it, expect } from 'vitest'
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/**
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* PR #678 測試: 修復 CompetitionPage 中 NaN 和缺失數據的顯示問題
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*
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* 問題：當 total_pnl_pct 為 null/undefined/NaN 時，會顯示 "NaN%" 或 "0.00%"
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* 修復：檢查數據有效性，顯示 "—" 表示缺失數據
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*/
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describe('CompetitionPage - Data Validation Logic (PR #678)', () => {
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/**
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* 測試數據有效性檢查邏輯
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* 這是 PR #678 引入的核心邏輯
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*/
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describe('hasValidData check', () => {
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it('should return true for valid numbers', () => {
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const trader1 = { total_pnl_pct: 10.5 }
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const trader2 = { total_pnl_pct: -5.2 }
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const hasValidData =
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trader1.total_pnl_pct != null &&
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trader2.total_pnl_pct != null &&
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!isNaN(trader1.total_pnl_pct) &&
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!isNaN(trader2.total_pnl_pct)
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expect(hasValidData).toBe(true)
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})
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it('should return false when trader1 has null value', () => {
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const trader1 = { total_pnl_pct: null }
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const trader2 = { total_pnl_pct: 10.5 }
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const hasValidData =
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trader1.total_pnl_pct != null &&
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trader2.total_pnl_pct != null &&
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!isNaN(trader1.total_pnl_pct!) &&
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!isNaN(trader2.total_pnl_pct)
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expect(hasValidData).toBe(false)
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})
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it('should return false when trader2 has undefined value', () => {
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const trader1 = { total_pnl_pct: 10.5 }
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const trader2 = { total_pnl_pct: undefined }
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const hasValidData =
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trader1.total_pnl_pct != null &&
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trader2.total_pnl_pct != null &&
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!isNaN(trader1.total_pnl_pct) &&
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!isNaN(trader2.total_pnl_pct!)
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expect(hasValidData).toBe(false)
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})
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it('should return false when trader1 has NaN value', () => {
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const trader1 = { total_pnl_pct: NaN }
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const trader2 = { total_pnl_pct: 10.5 }
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const hasValidData =
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trader1.total_pnl_pct != null &&
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trader2.total_pnl_pct != null &&
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!isNaN(trader1.total_pnl_pct) &&
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!isNaN(trader2.total_pnl_pct)
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expect(hasValidData).toBe(false)
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})
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it('should return false when both traders have invalid data', () => {
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const trader1 = { total_pnl_pct: null }
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const trader2 = { total_pnl_pct: NaN }
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const hasValidData =
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trader1.total_pnl_pct != null &&
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trader2.total_pnl_pct != null &&
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!isNaN(trader1.total_pnl_pct!) &&
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!isNaN(trader2.total_pnl_pct)
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expect(hasValidData).toBe(false)
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})
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it('should handle zero as valid data', () => {
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const trader1 = { total_pnl_pct: 0 }
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const trader2 = { total_pnl_pct: 10.5 }
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const hasValidData =
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trader1.total_pnl_pct != null &&
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trader2.total_pnl_pct != null &&
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!isNaN(trader1.total_pnl_pct) &&
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!isNaN(trader2.total_pnl_pct)
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expect(hasValidData).toBe(true)
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})
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it('should handle negative numbers as valid data', () => {
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const trader1 = { total_pnl_pct: -15.5 }
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const trader2 = { total_pnl_pct: -8.2 }
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const hasValidData =
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trader1.total_pnl_pct != null &&
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trader2.total_pnl_pct != null &&
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!isNaN(trader1.total_pnl_pct) &&
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!isNaN(trader2.total_pnl_pct)
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expect(hasValidData).toBe(true)
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})
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})
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/**
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* 測試 gap 計算邏輯
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* gap 應該只在數據有效時計算
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*/
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describe('gap calculation', () => {
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it('should calculate gap correctly for valid data', () => {
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const trader1 = { total_pnl_pct: 15.5 }
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const trader2 = { total_pnl_pct: 10.2 }
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const hasValidData =
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trader1.total_pnl_pct != null &&
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trader2.total_pnl_pct != null &&
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!isNaN(trader1.total_pnl_pct) &&
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!isNaN(trader2.total_pnl_pct)
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const gap = hasValidData
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? trader1.total_pnl_pct - trader2.total_pnl_pct
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: NaN
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expect(gap).toBeCloseTo(5.3, 1) // Allow floating point precision
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expect(isNaN(gap)).toBe(false)
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})
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it('should return NaN for invalid data', () => {
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const trader1 = { total_pnl_pct: null }
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const trader2 = { total_pnl_pct: 10.2 }
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const hasValidData =
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trader1.total_pnl_pct != null &&
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trader2.total_pnl_pct != null &&
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!isNaN(trader1.total_pnl_pct!) &&
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!isNaN(trader2.total_pnl_pct)
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const gap = hasValidData
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? trader1.total_pnl_pct! - trader2.total_pnl_pct
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: NaN
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expect(isNaN(gap)).toBe(true)
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})
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it('should handle negative gap correctly', () => {
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const trader1 = { total_pnl_pct: 5.0 }
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const trader2 = { total_pnl_pct: 12.0 }
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const hasValidData =
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trader1.total_pnl_pct != null &&
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trader2.total_pnl_pct != null &&
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!isNaN(trader1.total_pnl_pct) &&
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!isNaN(trader2.total_pnl_pct)
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const gap = hasValidData
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? trader1.total_pnl_pct - trader2.total_pnl_pct
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: NaN
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expect(gap).toBe(-7.0)
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})
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})
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/**
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* 測試顯示邏輯
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* 修復後應顯示「—」而非「NaN%」或「0.00%」
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*/
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describe('display formatting', () => {
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it('should format valid positive percentage correctly', () => {
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const total_pnl_pct = 15.567
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const display =
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total_pnl_pct != null && !isNaN(total_pnl_pct)
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? `${total_pnl_pct >= 0 ? '+' : ''}${total_pnl_pct.toFixed(2)}%`
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: '—'
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expect(display).toBe('+15.57%')
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})
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it('should format valid negative percentage correctly', () => {
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const total_pnl_pct = -8.234
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const display =
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total_pnl_pct != null && !isNaN(total_pnl_pct)
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? `${total_pnl_pct >= 0 ? '+' : ''}${total_pnl_pct.toFixed(2)}%`
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: '—'
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expect(display).toBe('-8.23%')
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})
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it('should display "—" for null value', () => {
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const total_pnl_pct = null
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const display =
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total_pnl_pct != null && !isNaN(total_pnl_pct)
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? `${total_pnl_pct >= 0 ? '+' : ''}${total_pnl_pct.toFixed(2)}%`
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: '—'
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expect(display).toBe('—')
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})
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it('should display "—" for undefined value', () => {
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const total_pnl_pct = undefined
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const display =
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total_pnl_pct != null && !isNaN(total_pnl_pct)
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? `${total_pnl_pct >= 0 ? '+' : ''}${total_pnl_pct.toFixed(2)}%`
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: '—'
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expect(display).toBe('—')
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})
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it('should display "—" for NaN value', () => {
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const total_pnl_pct = NaN
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const display =
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total_pnl_pct != null && !isNaN(total_pnl_pct)
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? `${total_pnl_pct >= 0 ? '+' : ''}${total_pnl_pct.toFixed(2)}%`
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: '—'
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expect(display).toBe('—')
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})
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it('should format zero correctly', () => {
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const total_pnl_pct = 0
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const display =
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total_pnl_pct != null && !isNaN(total_pnl_pct)
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? `${total_pnl_pct >= 0 ? '+' : ''}${total_pnl_pct.toFixed(2)}%`
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: '—'
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expect(display).toBe('+0.00%')
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})
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})
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/**
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* 測試領先/落後訊息顯示邏輯
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* 只有在數據有效時才顯示 "領先" 或 "落後" 訊息
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*/
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describe('leading/trailing message display', () => {
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it('should show leading message when winning with positive gap', () => {
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const isWinning = true
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const gap = 5.2
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const hasValidData = true
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const shouldShowLeading = hasValidData && isWinning && gap > 0
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expect(shouldShowLeading).toBe(true)
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})
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it('should not show leading message when data is invalid', () => {
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const isWinning = true
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const gap = NaN
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const hasValidData = false
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const shouldShowLeading = hasValidData && isWinning && gap > 0
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expect(shouldShowLeading).toBe(false)
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})
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it('should show trailing message when losing with negative gap', () => {
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const isWinning = false
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const gap = -3.5
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const hasValidData = true
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const shouldShowTrailing = hasValidData && !isWinning && gap < 0
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expect(shouldShowTrailing).toBe(true)
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})
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it('should not show trailing message when data is invalid', () => {
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const isWinning = false
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const gap = NaN
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const hasValidData = false
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const shouldShowTrailing = hasValidData && !isWinning && gap < 0
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expect(shouldShowTrailing).toBe(false)
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})
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it('should show fallback "—" when data is invalid', () => {
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const hasValidData = false
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const shouldShowFallback = !hasValidData
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expect(shouldShowFallback).toBe(true)
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})
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})
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/**
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* 測試邊界情況
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*/
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describe('edge cases', () => {
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it('should handle very small positive numbers', () => {
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const total_pnl_pct = 0.001
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const hasValidData = total_pnl_pct != null && !isNaN(total_pnl_pct)
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expect(hasValidData).toBe(true)
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})
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it('should handle very large numbers', () => {
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const total_pnl_pct = 9999.99
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const hasValidData = total_pnl_pct != null && !isNaN(total_pnl_pct)
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expect(hasValidData).toBe(true)
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})
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it('should handle Infinity as invalid (produces NaN in calculations)', () => {
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const total_pnl_pct = Infinity
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// Infinity 本身不是 NaN，但在減法運算中可能導致問題
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const hasValidData = total_pnl_pct != null && isFinite(total_pnl_pct)
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expect(hasValidData).toBe(false)
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})
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it('should handle -Infinity as invalid', () => {
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const total_pnl_pct = -Infinity
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const hasValidData = total_pnl_pct != null && isFinite(total_pnl_pct)
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expect(hasValidData).toBe(false)
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})
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})
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})
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@@ -392,7 +392,17 @@ export function CompetitionPage() {
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{sortedTraders.map((trader, index) => {
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const isWinning = index === 0
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const opponent = sortedTraders[1 - index]
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const gap = trader.total_pnl_pct - opponent.total_pnl_pct
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// Check if both values are valid numbers
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const hasValidData =
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trader.total_pnl_pct != null &&
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opponent.total_pnl_pct != null &&
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!isNaN(trader.total_pnl_pct) &&
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!isNaN(opponent.total_pnl_pct)
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const gap = hasValidData
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? trader.total_pnl_pct - opponent.total_pnl_pct
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: NaN
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return (
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<div
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@@ -429,10 +439,12 @@ export function CompetitionPage() {
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(trader.total_pnl ?? 0) >= 0 ? '#0ECB81' : '#F6465D',
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}}
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>
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{(trader.total_pnl ?? 0) >= 0 ? '+' : ''}
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{trader.total_pnl_pct?.toFixed(2) || '0.00'}%
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{trader.total_pnl_pct != null &&
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!isNaN(trader.total_pnl_pct)
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? `${trader.total_pnl_pct >= 0 ? '+' : ''}${trader.total_pnl_pct.toFixed(2)}%`
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: '—'}
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</div>
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{isWinning && gap > 0 && (
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{hasValidData && isWinning && gap > 0 && (
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<div
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className="text-xs font-semibold"
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style={{ color: '#0ECB81' }}
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@@ -440,7 +452,7 @@ export function CompetitionPage() {
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{t('leadingBy', language, { gap: gap.toFixed(2) })}
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</div>
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)}
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{!isWinning && gap < 0 && (
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{hasValidData && !isWinning && gap < 0 && (
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<div
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className="text-xs font-semibold"
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style={{ color: '#F6465D' }}
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@@ -450,6 +462,14 @@ export function CompetitionPage() {
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})}
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</div>
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)}
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{!hasValidData && (
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<div
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className="text-xs font-semibold"
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style={{ color: '#848E9C' }}
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>
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—
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</div>
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)}
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</div>
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</div>
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)
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