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103 lines
3.2 KiB
TypeScript
103 lines
3.2 KiB
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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import { describe, expect, test } from 'vitest';
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import {
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calcAndFormatDeltaPercent,
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calcAndFormatDeltaPercentInMdTable,
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escapeHtml,
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escapeLatex,
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escapeMdTableCell,
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formatBytes,
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formatColoredDelta,
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formatKiBAsMb,
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formatMs,
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formatNumber,
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} from '../src/format';
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describe('formatBytes', () => {
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// 1024ではなく1000区切り。単位が2桁以上なら小数を落とす
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test.each([
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[0, '0 B'],
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[999, '999 B'],
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[1_000, '1 KB'],
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[1_500, '1.5 KB'],
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[15_000, '15 KB'],
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[1_234_567, '1.2 MB'],
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[12_345_678, '12 MB'],
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[1_500_000_000, '1.5 GB'],
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[1_500_000_000_000, '1,500 GB'],
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])('formats %i as %s', (input, expected) => {
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expect(formatBytes(input)).toBe(expected);
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});
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});
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describe('formatColoredDelta', () => {
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test('leaves zero uncoloured and unsigned', () => {
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expect(formatColoredDelta(0, formatNumber)).toBe('0');
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});
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test('colours growth orange and shrinkage green', () => {
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expect(formatColoredDelta(5, formatNumber)).toBe('$\\color{orange}{\\text{+5}}$');
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expect(formatColoredDelta(-5, formatNumber)).toBe('$\\color{green}{\\text{-5}}$');
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});
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test('omits colour below the threshold but keeps the sign', () => {
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expect(formatColoredDelta(5, formatNumber, 10)).toBe('$\\text{+5}$');
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});
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});
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describe('escaping', () => {
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test('escapeHtml covers the five metacharacters', () => {
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expect(escapeHtml(`&<>"'`)).toBe('&<>"'');
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});
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test('escapeHtml maps nullish to an empty string', () => {
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expect(escapeHtml(null)).toBe('');
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expect(escapeHtml(undefined)).toBe('');
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});
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test('escapeLatex escapes braces and percent', () => {
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expect(escapeLatex('100% {x}')).toBe('100\\% \\{x\\}');
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});
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test('escapeMdTableCell keeps pipes and newlines from breaking the table', () => {
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expect(escapeMdTableCell('a|b\nc')).toBe('a\\|b<br>c');
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});
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});
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describe('percent helpers', () => {
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// before が0だと変化率そのものが定義できない
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test('returns a placeholder when the baseline is zero or missing', () => {
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expect(calcAndFormatDeltaPercent(0, 10)).toBe('-');
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expect(calcAndFormatDeltaPercent(null, 10)).toBe('-');
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expect(calcAndFormatDeltaPercent(10, null)).toBe('-');
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});
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// 0になったのは「消えた」という有効な結果なので、隠さず -100% として出す
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test('formats a drop to zero as -100%', () => {
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expect(calcAndFormatDeltaPercent(10, 0)).toBe('$\\color{green}{\\text{-100\\%}}$');
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});
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// Markdownのテーブルセル内ではLaTeXの \% がさらに食われるため二重にする
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test('doubles the percent escape for markdown table cells', () => {
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expect(calcAndFormatDeltaPercentInMdTable(100, 110)).toContain('\\\\%');
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expect(calcAndFormatDeltaPercent(100, 110)).not.toContain('\\\\%');
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});
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});
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describe('nullish handling', () => {
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test('formatKiBAsMb and formatMs render a dash for missing values', () => {
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expect(formatKiBAsMb(null)).toBe('-');
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expect(formatKiBAsMb(Number.NaN)).toBe('-');
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expect(formatMs(undefined)).toBe('-');
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});
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test('formatMs switches to seconds past 1000ms', () => {
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expect(formatMs(999)).toBe('999 ms');
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expect(formatMs(1_500)).toBe('1.5 s');
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});
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});
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