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scrabble-game/ui/e2e/gestures.spec.ts
T
Ilia Denisov 800a692766
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fix(ui): a board pinch-zoom no longer triggers swipe-back
The edge swipe-back armed on the first finger and fired on release even when a
second finger had joined (a pinch-zoom — the board is not .zoomed yet at the first
touch, so the hit-test could not skip it). Track the live pointer count in the
capture phase and cancel the swipe the moment a second pointer joins; the back
navigation fires only for a lone finger. Synthetic-PointerEvent e2e covers both.
2026-06-15 13:52:52 +02:00

46 lines
1.9 KiB
TypeScript

import { expect, test, type Page } from './fixtures';
// The edge swipe-back gesture (components/Screen.svelte) against the mock transport.
// Real multi-touch pinch is not reproducible in Playwright, so this drives the handler
// directly with synthetic PointerEvents (it listens at the window in the capture phase):
// a lone finger swiping right from the left edge navigates back; a two-finger gesture
// (a pinch-zoom, whose release would otherwise read as a swipe) does not.
async function loginLobby(page: Page): Promise<void> {
await page.goto('/');
await page.getByRole('button', { name: /guest/i }).click();
await expect(page.getByText('Your turn')).toBeVisible();
}
function pointer(page: Page, type: string, x: number, y: number, id: number): Promise<void> {
return page.evaluate(
({ type, x, y, id }) => {
window.dispatchEvent(
new PointerEvent(type, { clientX: x, clientY: y, pointerId: id, pointerType: 'touch', bubbles: true, cancelable: true }),
);
},
{ type, x, y, id },
);
}
test('edge swipe-back: a lone finger navigates back, a pinch does not', async ({ page }) => {
await loginLobby(page);
// Open the Settings hub (back = lobby).
await page.getByRole('button', { name: /Settings/ }).click();
await expect(page.getByText('Your turn')).toBeHidden();
// A two-finger gesture from the left edge is a pinch (its second finger joins after the
// first): releasing it must NOT navigate back — we stay on Settings.
await pointer(page, 'pointerdown', 8, 300, 1);
await pointer(page, 'pointerdown', 60, 300, 2);
await pointer(page, 'pointerup', 260, 300, 1);
await pointer(page, 'pointerup', 90, 300, 2);
await expect(page.getByText('Your turn')).toBeHidden();
// A single finger swiping right from the left edge does return to the lobby.
await pointer(page, 'pointerdown', 8, 300, 1);
await pointer(page, 'pointerup', 260, 300, 1);
await expect(page.getByText('Your turn')).toBeVisible();
});