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98f5be13fa
* fix(tui): word-wrap composer input Wrap composer input at word boundaries and anchor the good-vibes heart to the full composer row. * test(tui): cover composer word wrap edge Add regression coverage for moving the next word instead of splitting it at the composer edge.
101 lines
3.9 KiB
TypeScript
101 lines
3.9 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 — word-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('moves words across wrap boundaries instead of splitting them', () => {
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// With wordWrap:true, "hello wor" at cols=8 is "hello \nwor" rather
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// than "hello wo\nr".
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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: 3, line: 1 })
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expect(cursorLayout('hello worl', 10, 8)).toEqual({ column: 4, line: 1 })
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expect(cursorLayout('hello world', 11, 8)).toEqual({ column: 5, line: 1 })
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})
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it('wraps the next word instead of splitting it at the right edge', () => {
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const text = 'hello world baby chickens are so cool its really rainy outside but wish'
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expect(cursorLayout(text, text.length, 70)).toEqual({ column: 4, line: 1 })
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expect(inputVisualHeight(text, 70)).toBe(2)
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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 — word-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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// Long words still hard-wrap when there is no word boundary.
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expect(offsetFromPosition('abcdefghij', 1, 0, 8)).toBe(8)
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})
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it('maps clicks on a word-wrapped second row', () => {
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// "hello world" at cols=8 wraps to "hello \nworld".
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expect(offsetFromPosition('hello world', 1, 0, 8)).toBe(6)
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expect(offsetFromPosition('hello world', 1, 3, 8)).toBe(9)
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})
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it('maps clicks on the moved final word', () => {
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const text = 'hello world baby chickens are so cool its really rainy outside but wish'
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expect(offsetFromPosition(text, 1, 0, 70)).toBe(text.indexOf('wish'))
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expect(offsetFromPosition(text, 1, 3, 70)).toBe(text.indexOf('wish') + 3)
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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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