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