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245 lines
8.3 KiB
JavaScript
245 lines
8.3 KiB
JavaScript
import {describe, expect, test} from 'vitest';
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import {
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estimateTextWidth,
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getLabelFontSize,
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getLabelLines,
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getLabelTrack,
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getRadialLabelLayout,
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} from '../src/remotion/wheel-label-layout.js';
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describe('wheel label layout', () => {
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const readableExample = 'Chiều nay uống CraneTea';
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const supportedSize = 512;
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const supportedRadius = supportedSize * 0.41;
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const supportedHubRadius = supportedSize * 0.09;
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/**
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* @param {object} [overrides]
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* @param {number} [overrides.optionCount]
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* @param {string} [overrides.text]
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*/
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const get512Layout = ({optionCount = 8, text = readableExample} = {}) =>
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getRadialLabelLayout({
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center: supportedSize / 2,
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radius: supportedRadius,
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hubRadius: supportedHubRadius,
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centerDegrees: 0,
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optionCount,
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text,
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});
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test('centers radial label tracks on the slice center angle', () => {
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const center = 256;
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const radius = 210;
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const hubRadius = 46;
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const centerDegrees = 45;
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const layout = getRadialLabelLayout({
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center,
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radius,
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hubRadius,
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centerDegrees,
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optionCount: 8,
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text: 'alice',
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});
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const track = getLabelTrack(radius, hubRadius);
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const radians = (centerDegrees * Math.PI) / 180;
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expect(layout.x).toBeCloseTo(center + Math.cos(radians) * track.midRadius);
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expect(layout.y).toBeCloseTo(center + Math.sin(radians) * track.midRadius);
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expect(layout.width).toBe(track.width);
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expect(layout.rotation).toBe(centerDegrees);
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});
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test('keeps left-side text aligned with the slice instead of flipping it upright', () => {
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const layout = getRadialLabelLayout({
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center: 256,
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radius: 210,
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hubRadius: 46,
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centerDegrees: 180,
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optionCount: 8,
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text: 'left side',
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});
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expect(layout.rotation).toBe(180);
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});
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test('keeps short labels on one line at the base size', () => {
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const layout = getRadialLabelLayout({
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center: 256,
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radius: 210,
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hubRadius: 46,
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centerDegrees: 0,
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optionCount: 8,
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text: 'alice',
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});
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expect(layout.lines).toEqual(['alice']);
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expect(layout.fontSize).toBe(getLabelFontSize(210, 8));
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});
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test('fits smoke-fixture labels on one line at the minimum supported size', () => {
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const size = 384;
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const radius = size * 0.41;
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const hubRadius = size * 0.09;
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const expectedFontSizes = new Map([
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['alpha', 21],
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['beta', 22],
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['gamma', 20],
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['delta', 21],
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]);
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for (const [text, expectedFontSize] of expectedFontSizes) {
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const layout = getRadialLabelLayout({
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center: size / 2,
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radius,
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hubRadius,
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centerDegrees: 0,
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optionCount: 4,
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text,
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});
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expect(layout.lines).toEqual([text]);
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expect(layout.fontSize).toBe(expectedFontSize);
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}
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});
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test('wraps long phrases into balanced word-boundary lines', () => {
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const lines = getLabelLines('a much longer wheel entry label', 24, 140, 3);
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const widths = lines.map((line) => estimateTextWidth(line, 24));
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expect(lines).toHaveLength(3);
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expect(lines.join(' ')).toBe('a much longer wheel entry label');
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expect(Math.max(...widths) - Math.min(...widths)).toBeLessThan(80);
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});
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test('sizes wrapped labels from their longest rendered line', () => {
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const layout = getRadialLabelLayout({
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center: 256,
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radius: 210,
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hubRadius: 46,
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centerDegrees: 0,
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optionCount: 8,
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text: 'a much longer wheel entry label',
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});
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const longestLine = layout.lines.reduce((longest, line) =>
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estimateTextWidth(line, 24) > estimateTextWidth(longest, 24) ? line : longest,
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'');
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expect(layout.lines.length).toBeGreaterThan(1);
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expect(layout.fontSize).toBe(getLabelFontSize(210, 8, longestLine, layout.contentWidth));
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expect(layout.fontSize).toBeGreaterThan(
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getLabelFontSize(210, 8, 'a much longer wheel entry label', layout.contentWidth),
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);
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expect(layout.height).toBeLessThanOrEqual((2 * Math.PI * getLabelTrack(210, 46).midRadius) / 8);
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});
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test.each([2, 8, 12, 16])(
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'wraps the Vietnamese readability example when geometry permits at %i options',
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(optionCount) => {
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const layout = get512Layout({optionCount});
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const availableHeight =
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(2 * Math.PI * getLabelTrack(supportedRadius, supportedHubRadius).midRadius) / optionCount;
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expect(layout.lines.length).toBeGreaterThanOrEqual(2);
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expect(layout.lines.join(' ')).toBe(readableExample);
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expect(layout.fontSize).toBeGreaterThanOrEqual(14);
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expect(layout.height).toBeLessThanOrEqual(availableHeight);
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expect(layout.lines.every((line) => estimateTextWidth(line, layout.fontSize) <= layout.contentWidth)).toBe(true);
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},
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);
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test.each([
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[9, 'WWWWWWWWWWWWWWWW'],
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[10, 'WWWWWWWWWWWWWW'],
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[11, 'WWWWWWWWWWWWW'],
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[12, 'WWWWWWWWWWWW'],
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[13, 'WWWWWWWWWWW'],
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])('wraps an unbroken token whose one-line fit is %ipx', (oneLineFontSize, text) => {
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const layout = get512Layout({text});
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const track = getLabelTrack(supportedRadius, supportedHubRadius);
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const contentWidth = track.width - Math.max(4, supportedRadius * 0.02) * 2;
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expect(getLabelFontSize(supportedRadius, 8, text, contentWidth)).toBe(oneLineFontSize);
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expect(layout.lines.length).toBeGreaterThanOrEqual(2);
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expect(layout.lines.join('')).toBe(text);
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expect(layout.fontSize).toBeGreaterThanOrEqual(14);
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expect(layout.lines.every((line) => estimateTextWidth(line, layout.fontSize) <= layout.contentWidth)).toBe(true);
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});
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test('keeps an exactly 14px one-line fit on one line', () => {
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const text = 'WWWWWWWWWW';
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const layout = get512Layout({text});
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expect(getLabelFontSize(supportedRadius, 8, text, layout.contentWidth)).toBe(14);
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expect(layout.lines).toEqual([text]);
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expect(layout.fontSize).toBe(14);
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});
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test.each([24, 32])('keeps the complete Vietnamese example bounded on one line at %i options', (optionCount) => {
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const layout = get512Layout({optionCount});
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const availableHeight =
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(2 * Math.PI * getLabelTrack(supportedRadius, supportedHubRadius).midRadius) / optionCount;
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expect(layout.lines).toEqual([readableExample]);
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expect(layout.fontSize).toBeLessThan(14);
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expect(layout.height).toBeLessThanOrEqual(availableHeight);
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expect(estimateTextWidth(layout.lines[0] ?? '', layout.fontSize)).toBeLessThanOrEqual(layout.contentWidth);
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});
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test('keeps supported dense layouts to one bounded line', () => {
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const size = 384;
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const radius = size * 0.41;
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const hubRadius = size * 0.09;
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const optionCount = 32;
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const layout = getRadialLabelLayout({
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center: size / 2,
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radius,
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hubRadius,
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centerDegrees: 0,
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optionCount,
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text: 'a label that reaches the configured limit',
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});
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const availableHeight = (2 * Math.PI * getLabelTrack(radius, hubRadius).midRadius) / optionCount;
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expect(layout.lines).toEqual(['a label that reaches the configured limit']);
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expect(layout.fontSize).toBe(8);
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expect(layout.height).toBeLessThanOrEqual(availableHeight);
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});
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test('keeps the border box on the radial track and fits text to its padded content width', () => {
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const radius = 384 * 0.41;
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const hubRadius = 384 * 0.09;
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const layout = getRadialLabelLayout({
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center: 192,
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radius,
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hubRadius,
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centerDegrees: 0,
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optionCount: 4,
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text: 'alpha',
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});
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const track = getLabelTrack(radius, hubRadius);
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expect(layout.width).toBe(track.width);
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expect(layout.horizontalPadding).toBe(Math.max(4, radius * 0.02));
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expect(layout.contentWidth).toBe(layout.width - layout.horizontalPadding * 2);
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expect(estimateTextWidth(layout.lines[0] ?? '', layout.fontSize)).toBeLessThanOrEqual(layout.contentWidth);
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});
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test('normalizes whitespace and splits unbroken text without breaking graphemes', () => {
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expect(getLabelLines(' alpha beta\n gamma ', 24, 90, 3).join(' ')).toBe('alpha beta gamma');
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const token = 'winner🏆winner🏆winner';
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const lines = getLabelLines(token, 24, 90, 3);
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expect(lines.length).toBeGreaterThan(1);
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expect(lines.join('')).toBe(token);
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expect(lines.every((line) => {
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const firstCodeUnit = line.charCodeAt(0);
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const lastCodeUnit = line.charCodeAt(line.length - 1);
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return !(firstCodeUnit >= 0xdc00 && firstCodeUnit <= 0xdfff) && !(lastCodeUnit >= 0xd800 && lastCodeUnit <= 0xdbff);
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})).toBe(true);
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});
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});
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