import { fireEvent, render, screen } from "@testing-library/react"; import { StrictMode } from "react"; import { describe, expect, it, vi } from "vitest"; import { Dropdown } from "./Menu.tsx"; describe("Dropdown (T12.1)", () => { it("onOpen вызывается один раз на открытие, в том числе в StrictMode", () => { const onOpen = vi.fn(); render( }>{() =>

меню

}
); fireEvent.click(screen.getByText("открыть")); expect(onOpen).toHaveBeenCalledTimes(1); expect(screen.getByText("меню")).toBeInTheDocument(); fireEvent.click(screen.getByText("открыть")); expect(onOpen).toHaveBeenCalledTimes(1); }); });