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https://github.com/Comfy-Org/ComfyUI_frontend.git
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npm run format
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@@ -1,58 +1,58 @@
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import { describe, expect, it, vi } from "vitest"
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import { describe, expect, it, vi } from 'vitest'
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import { truncateText } from "@/lib/litegraph/src/utils/textUtils"
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import { truncateText } from '@/lib/litegraph/src/utils/textUtils'
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describe("truncateText", () => {
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describe('truncateText', () => {
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const createMockContext = (charWidth: number = 10) => {
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return {
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measureText: vi.fn((text: string) => ({ width: text.length * charWidth })),
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measureText: vi.fn((text: string) => ({ width: text.length * charWidth }))
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} as unknown as CanvasRenderingContext2D
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}
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it("should return original text if it fits within maxWidth", () => {
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it('should return original text if it fits within maxWidth', () => {
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const ctx = createMockContext()
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const result = truncateText(ctx, "Short", 100)
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expect(result).toBe("Short")
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const result = truncateText(ctx, 'Short', 100)
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expect(result).toBe('Short')
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})
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it("should return original text if maxWidth is 0 or negative", () => {
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it('should return original text if maxWidth is 0 or negative', () => {
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const ctx = createMockContext()
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expect(truncateText(ctx, "Text", 0)).toBe("Text")
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expect(truncateText(ctx, "Text", -10)).toBe("Text")
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expect(truncateText(ctx, 'Text', 0)).toBe('Text')
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expect(truncateText(ctx, 'Text', -10)).toBe('Text')
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})
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it("should truncate text and add ellipsis when text is too long", () => {
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it('should truncate text and add ellipsis when text is too long', () => {
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const ctx = createMockContext(10) // 10 pixels per character
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const result = truncateText(ctx, "This is a very long text", 100)
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const result = truncateText(ctx, 'This is a very long text', 100)
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// 100px total, "..." takes 30px, leaving 70px for text (7 chars)
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expect(result).toBe("This is...")
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expect(result).toBe('This is...')
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})
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it("should use custom ellipsis when provided", () => {
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it('should use custom ellipsis when provided', () => {
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const ctx = createMockContext(10)
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const result = truncateText(ctx, "This is a very long text", 100, "…")
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const result = truncateText(ctx, 'This is a very long text', 100, '…')
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// 100px total, "…" takes 10px, leaving 90px for text (9 chars)
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expect(result).toBe("This is a…")
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expect(result).toBe('This is a…')
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})
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it("should return only ellipsis if available width is too small", () => {
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it('should return only ellipsis if available width is too small', () => {
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const ctx = createMockContext(10)
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const result = truncateText(ctx, "Text", 20) // Only room for 2 chars, but "..." needs 3
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expect(result).toBe("...")
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const result = truncateText(ctx, 'Text', 20) // Only room for 2 chars, but "..." needs 3
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expect(result).toBe('...')
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})
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it("should handle empty text", () => {
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it('should handle empty text', () => {
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const ctx = createMockContext()
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const result = truncateText(ctx, "", 100)
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expect(result).toBe("")
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const result = truncateText(ctx, '', 100)
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expect(result).toBe('')
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})
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it("should use binary search efficiently", () => {
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it('should use binary search efficiently', () => {
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const ctx = createMockContext(10)
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const longText = "A".repeat(100) // 100 characters
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const longText = 'A'.repeat(100) // 100 characters
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const result = truncateText(ctx, longText, 200) // Room for 20 chars total
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expect(result).toBe(`${"A".repeat(17)}...`) // 17 chars + "..." = 20 chars = 200px
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expect(result).toBe(`${'A'.repeat(17)}...`) // 17 chars + "..." = 20 chars = 200px
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// Verify binary search efficiency - should not measure every possible substring
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// Binary search for 100 chars should take around log2(100) ≈ 7 iterations
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@@ -62,21 +62,21 @@ describe("truncateText", () => {
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expect(callCount).toBeGreaterThan(5)
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})
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it("should handle unicode characters correctly", () => {
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it('should handle unicode characters correctly', () => {
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const ctx = createMockContext(10)
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const result = truncateText(ctx, "Hello 👋 World", 80)
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const result = truncateText(ctx, 'Hello 👋 World', 80)
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// Assuming each char (including emoji) is 10px, total is 130px
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// 80px total, "..." takes 30px, leaving 50px for text (5 chars)
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expect(result).toBe("Hello...")
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expect(result).toBe('Hello...')
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})
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it("should handle exact boundary cases", () => {
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it('should handle exact boundary cases', () => {
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const ctx = createMockContext(10)
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// Text exactly fits
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expect(truncateText(ctx, "Exact", 50)).toBe("Exact") // 5 chars = 50px
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expect(truncateText(ctx, 'Exact', 50)).toBe('Exact') // 5 chars = 50px
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// Text is exactly 1 pixel too long
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expect(truncateText(ctx, "Exact!", 50)).toBe("Ex...") // 6 chars = 60px, truncated
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expect(truncateText(ctx, 'Exact!', 50)).toBe('Ex...') // 6 chars = 60px, truncated
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})
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})
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