cal.pub0.org/packages/ui/components/scrollable/scrollablearea.test.tsx

47 lines
1.3 KiB
TypeScript

import { render } from "@testing-library/react";
import { ScrollableArea } from "./ScrollableArea";
describe("Tests for ScrollableArea Component", () => {
test("Should render children inside the scrollable area", () => {
const { getByText } = render(
<ScrollableArea>
<div>Child 1</div>
<div>Child 2</div>
</ScrollableArea>
);
expect(getByText("Child 1")).toBeInTheDocument();
expect(getByText("Child 2")).toBeInTheDocument();
});
test("Shouldn't show the overflow indicator when content does not overflow vertically", () => {
const mockScrollHeight = 50;
const { queryByTestId } = render(
<ScrollableArea>
<div style={{ height: `${mockScrollHeight}px` }}>Non-Overflowing Content</div>
</ScrollableArea>
);
expect(queryByTestId("overflow-indicator")).not.toBeInTheDocument();
});
test("Should show the overflow indicator when content overflows vertically", () => {
const mockScrollHeight = 100;
Object.defineProperty(HTMLElement.prototype, "scrollHeight", {
value: mockScrollHeight,
writable: true,
});
const { getByTestId } = render(
<ScrollableArea>
<div>Overflowing Content</div>
</ScrollableArea>
);
expect(getByTestId("overflow-indicator")).toBeInTheDocument();
});
});