10fcd620d2
Reserve the composer prompt gap as layout instead of relying on terminal handling of trailing spaces.
82 lines
3.1 KiB
TypeScript
82 lines
3.1 KiB
TypeScript
import { describe, expect, it } from 'vitest'
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import { offsetFromPosition } from '../components/textInput.js'
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import { composerPromptWidth, cursorLayout, inputVisualHeight, stableComposerColumns } from '../lib/inputMetrics.js'
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describe('cursorLayout — char-wrap parity with wrap-ansi', () => {
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it('places cursor mid-line at its column', () => {
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expect(cursorLayout('hello world', 6, 40)).toEqual({ column: 6, line: 0 })
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})
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it('places cursor at end of a non-full line', () => {
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expect(cursorLayout('hi', 2, 10)).toEqual({ column: 2, line: 0 })
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})
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it('wraps to next line when cursor lands exactly at the right edge', () => {
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// 8 chars on an 8-col line: text fills the row exactly; the cursor's
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// inverted-space cell overflows to col 0 of the next row.
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expect(cursorLayout('abcdefgh', 8, 8)).toEqual({ column: 0, line: 1 })
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})
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it('tracks a word across a char-wrap boundary without jumping', () => {
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// With wordWrap:false, "hello world" at cols=8 is "hello wo\nrld" —
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// typing incremental letters doesn't reshuffle the word across lines.
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expect(cursorLayout('hello wo', 8, 8)).toEqual({ column: 0, line: 1 })
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expect(cursorLayout('hello wor', 9, 8)).toEqual({ column: 1, line: 1 })
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expect(cursorLayout('hello worl', 10, 8)).toEqual({ column: 2, line: 1 })
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})
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it('honours explicit newlines', () => {
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expect(cursorLayout('one\ntwo', 5, 40)).toEqual({ column: 1, line: 1 })
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expect(cursorLayout('one\ntwo', 4, 40)).toEqual({ column: 0, line: 1 })
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})
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it('does not wrap when cursor is before the right edge', () => {
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expect(cursorLayout('abcdefg', 7, 8)).toEqual({ column: 7, line: 0 })
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})
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})
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describe('input metrics helpers', () => {
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it('computes visual height from the wrapped cursor line', () => {
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expect(inputVisualHeight('abcdefgh', 8)).toBe(2)
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expect(inputVisualHeight('one\ntwo', 40)).toBe(2)
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})
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it('counts the prompt gap as its own cell', () => {
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expect(composerPromptWidth('>')).toBe(2)
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expect(composerPromptWidth('❯')).toBe(2)
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expect(composerPromptWidth('Ψ >')).toBe(4)
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})
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it('reserves gutters on wide panes without starving narrow composer width', () => {
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expect(stableComposerColumns(100, 3)).toBe(93)
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expect(stableComposerColumns(100, 5)).toBe(91)
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expect(stableComposerColumns(10, 3)).toBe(5)
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expect(stableComposerColumns(6, 3)).toBe(1)
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})
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})
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describe('offsetFromPosition — char-wrap inverse of cursorLayout', () => {
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it('returns 0 for empty input', () => {
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expect(offsetFromPosition('', 0, 0, 10)).toBe(0)
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})
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it('maps clicks within a single line', () => {
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expect(offsetFromPosition('hello', 0, 3, 40)).toBe(3)
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})
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it('maps clicks past end to value length', () => {
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expect(offsetFromPosition('hi', 0, 10, 40)).toBe(2)
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})
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it('maps clicks on a wrapped second row at cols boundary', () => {
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// "abcdefghij" at cols=8 wraps to "abcdefgh\nij" — click at row 1 col 0
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// should land on 'i' (offset 8).
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expect(offsetFromPosition('abcdefghij', 1, 0, 8)).toBe(8)
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})
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it('maps clicks past a \\n into the target line', () => {
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expect(offsetFromPosition('one\ntwo', 1, 2, 40)).toBe(6)
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})
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})
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