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calcom/packages/ui/components/scrollable/scrollablearea.test.tsx

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+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();
+  });
+});