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66 lines
2.1 KiB
TypeScript
66 lines
2.1 KiB
TypeScript
// @vitest-environment node
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import { describe, expect, it } from 'vitest'
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import {
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clearScreen,
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enterAlternateScreen,
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leaveAlternateScreen,
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padToWidth,
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SGR,
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stripAnsi,
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style,
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terminalSize,
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tone,
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truncateToWidth,
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visibleWidth,
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} from '../../scripts/lib/ansi.mjs'
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describe('ansi (OPS109)', () => {
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it('strips SGR sequences when measuring', () => {
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const styled = style(SGR.bold, 'olá')
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expect(stripAnsi(styled)).toBe('olá')
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expect(visibleWidth(styled)).toBe(3)
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expect(visibleWidth('olá')).toBe(3)
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})
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it('keeps plain text untouched', () => {
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expect(stripAnsi('sem escape')).toBe('sem escape')
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})
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it('truncates with an ellipsis at the visible limit', () => {
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expect(truncateToWidth('abcdef', 4)).toBe('abc…')
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expect(truncateToWidth('abc', 4)).toBe('abc')
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expect(truncateToWidth('abc', 0)).toBe('')
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})
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it('measures width ignoring escapes when truncating', () => {
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const styled = `${SGR.bold}abcdef${SGR.reset}`
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expect(stripAnsi(truncateToWidth(styled, 3))).toBe('ab…')
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})
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it('pads to the target width after the text', () => {
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expect(padToWidth('ab', 4)).toBe('ab ')
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expect(stripAnsi(padToWidth(`${SGR.bold}ab`, 4))).toBe('ab ')
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expect(visibleWidth(padToWidth('abcdef', 4))).toBe(4)
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})
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it('emits the alternate-screen enter/leave pair and clear', () => {
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expect(enterAlternateScreen()).toBe('\u001b[?1049h')
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expect(leaveAlternateScreen()).toBe('\u001b[?1049l')
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expect(clearScreen()).toBe('\u001b[2J\u001b[H')
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})
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it('falls back to 80x24 when the size is unknown', () => {
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expect(terminalSize({})).toEqual({ columns: 80, rows: 24 })
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expect(terminalSize({ columns: 0, rows: Number.NaN })).toEqual({ columns: 80, rows: 24 })
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expect(terminalSize({ columns: 46, rows: 20 })).toEqual({ columns: 46, rows: 20 })
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})
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it('styles known tones and degrades unknown ones to gray', () => {
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expect(tone('ok', 'x')).toBe(style(SGR.green, 'x'))
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expect(tone('wait', 'x')).toBe(style(SGR.yellow, 'x'))
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expect(tone('bad', 'x')).toBe(style(SGR.red, 'x'))
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expect(tone('whatever', 'x')).toBe(style(SGR.gray, 'x'))
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})
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})
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