Files
helder/test/editor-tab.test.tsx
Jonathan van Rij e126182ae6
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improvements
2026-07-31 13:29:22 +02:00

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2.9 KiB
TypeScript

// @vitest-environment jsdom
import { afterEach, beforeAll, describe, expect, it, vi } from 'vitest'
import { cleanup, fireEvent, render, waitFor } from '@testing-library/react'
import React from 'react'
vi.mock('../src/renderer/src/terminals', () => {
let n = 0
return { Terminal: () => null, lid: () => ++n }
})
import { App } from '../src/renderer/src/App'
import { ProjectProvider } from '../src/renderer/src/project'
beforeAll(() => {
globalThis.ResizeObserver = class { observe() {} unobserve() {} disconnect() {} } as never
if (!Element.prototype.scrollIntoView) Element.prototype.scrollIntoView = () => {}
})
afterEach(() => { cleanup(); localStorage.clear() })
function find(c: HTMLElement, sel: string, text: string): HTMLElement | undefined {
return Array.from(c.querySelectorAll<HTMLElement>(sel)).find((el) => el.textContent?.trim() === text)
}
// Open a changed file and switch to the writable buffer.
async function openEditor(): Promise<HTMLTextAreaElement> {
const c = render(<ProjectProvider><App /></ProjectProvider>).container
const row = await waitFor(() => {
const r = Array.from(c.querySelectorAll<HTMLElement>('.git-row')).find((el) => el.textContent?.includes('UserController.php'))
if (!r) throw new Error('git not ready')
return r
})
fireEvent.click(row)
await waitFor(() => expect(c.querySelector('.diff-bar')).toBeTruthy())
fireEvent.click(find(c, '.seg button', 'Actual')!)
return await waitFor(() => {
const ta = c.querySelector<HTMLTextAreaElement>('.ce-ta')
if (!ta) throw new Error('no buffer')
return ta
})
}
function tab(ta: HTMLTextAreaElement, shift = false): boolean {
return fireEvent.keyDown(ta, { key: 'Tab', shiftKey: shift })
}
describe('Tab in the code editor', () => {
it('inserts four spaces at the caret instead of moving focus', async () => {
const ta = await openEditor()
const before = ta.value
ta.setSelectionRange(0, 0)
// fireEvent returns false when a handler called preventDefault, which is
// what stops the browser tabbing focus over to the agent column.
expect(tab(ta)).toBe(false)
await waitFor(() => expect(ta.value).toBe(' ' + before))
})
it('indents every line a multi-line selection touches', async () => {
const ta = await openEditor()
const lines = ta.value.split('\n')
// Select from inside line 1 to inside line 2.
ta.setSelectionRange(1, lines[0].length + 2)
tab(ta)
await waitFor(() => {
const now = ta.value.split('\n')
expect(now[0]).toBe(' ' + lines[0])
expect(now[1]).toBe(' ' + lines[1])
expect(now[2]).toBe(lines[2])
})
})
it('Shift+Tab outdents the current line', async () => {
const ta = await openEditor()
ta.setSelectionRange(0, 0)
tab(ta)
await waitFor(() => expect(ta.value.startsWith(' ')).toBe(true))
ta.setSelectionRange(6, 6)
expect(tab(ta, true)).toBe(false)
await waitFor(() => expect(ta.value.startsWith(' ')).toBe(false))
})
})