Files
excalidraw/src/tests/scroll.test.tsx
T
Aakansha Doshi 7c5481b877 feat: Add support for scrollToCenter in initialData so host can control whether to scroll to center on mount (#3070)
* feat: Add support for scrollToCenter in initialData so host can control whether to scroll to center on mount

* fix

* update changelog and readme

* fix

* Scroll to center only for collab and shareable links in excalidraw app

* fix test

* update readme

* Update src/packages/excalidraw/README.md
2021-02-21 19:01:34 +05:30

50 lines
1.3 KiB
TypeScript

import React from "react";
import { render, waitFor } from "./test-utils";
import Excalidraw from "../packages/excalidraw/index";
import { API } from "./helpers/api";
const { h } = window;
describe("appState", () => {
it("scroll-to-center on init works with non-zero offsets", async () => {
const WIDTH = 600;
const HEIGHT = 700;
const OFFSET_LEFT = 200;
const OFFSET_TOP = 100;
const ELEM_WIDTH = 100;
const ELEM_HEIGHT = 60;
await render(
<Excalidraw
width={WIDTH}
height={HEIGHT}
offsetLeft={OFFSET_LEFT}
offsetTop={OFFSET_TOP}
initialData={{
elements: [
API.createElement({
type: "rectangle",
id: "A",
width: ELEM_WIDTH,
height: ELEM_HEIGHT,
}),
],
scrollToCenter: true,
}}
/>,
);
await waitFor(() => {
expect(h.state.width).toBe(WIDTH);
expect(h.state.height).toBe(HEIGHT);
expect(h.state.offsetLeft).toBe(OFFSET_LEFT);
expect(h.state.offsetTop).toBe(OFFSET_TOP);
// assert scroll is in center
expect(h.state.scrollX).toBe(WIDTH / 2 - ELEM_WIDTH / 2);
expect(h.state.scrollY).toBe(HEIGHT / 2 - ELEM_HEIGHT / 2);
});
});
});