excalidraw/src/tests/appState.test.tsx

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import React from "react";
import { render, waitFor } from "./test-utils";
import App from "../components/App";
import { API } from "./helpers/api";
import { getDefaultAppState } from "../appState";
const { h } = window;
describe("appState", () => {
it("drag&drop file doesn't reset non-persisted appState", async () => {
const defaultAppState = getDefaultAppState();
const exportBackground = !defaultAppState.exportBackground;
render(
<App
initialData={{
appState: {
...defaultAppState,
exportBackground,
viewBackgroundColor: "#F00",
},
elements: [],
}}
/>,
);
await waitFor(() => {
expect(h.state.exportBackground).toBe(exportBackground);
expect(h.state.viewBackgroundColor).toBe("#F00");
});
API.dropFile({
appState: {
viewBackgroundColor: "#000",
},
elements: [API.createElement({ type: "rectangle", id: "A" })],
});
await waitFor(() => {
expect(h.elements).toEqual([expect.objectContaining({ id: "A" })]);
// non-imported prop → retain
expect(h.state.exportBackground).toBe(exportBackground);
// imported prop → overwrite
expect(h.state.viewBackgroundColor).toBe("#000");
});
});
});