Daniel Volz
5c09f97cb3
- Export DashboardPage helper functions for testability - Add new test files: App, SharedSchedule, AppContext, UnsavedChangesContext, useUnsavedChangesWarning - Expand existing test coverage for Auth, MedDetailModal, MobileEditModal, DashboardPage, MedicationsPage, PlannerPage, and more - Add edge case and error handling tests across components, hooks, and pages
53 lines
2.0 KiB
TypeScript
53 lines
2.0 KiB
TypeScript
import { renderHook } from "@testing-library/react";
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import { afterEach, describe, expect, it, vi } from "vitest";
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import { useUnsavedChangesWarning } from "../../hooks/useUnsavedChangesWarning";
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describe("useUnsavedChangesWarning", () => {
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afterEach(() => {
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vi.restoreAllMocks();
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});
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it("registers and unregisters beforeunload listener", () => {
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const addListenerSpy = vi.spyOn(window, "addEventListener");
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const removeListenerSpy = vi.spyOn(window, "removeEventListener");
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const { unmount } = renderHook(() => useUnsavedChangesWarning(false));
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const beforeUnloadCall = addListenerSpy.mock.calls.find((call) => call[0] === "beforeunload");
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expect(beforeUnloadCall).toBeDefined();
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const handler = beforeUnloadCall?.[1] as EventListener;
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unmount();
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expect(removeListenerSpy).toHaveBeenCalledWith("beforeunload", handler);
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});
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it("sets returnValue when unsaved changes exist", () => {
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const addListenerSpy = vi.spyOn(window, "addEventListener");
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renderHook(() => useUnsavedChangesWarning(true));
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const beforeUnloadCall = addListenerSpy.mock.calls.find((call) => call[0] === "beforeunload");
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const handler = beforeUnloadCall?.[1] as (event: BeforeUnloadEvent) => unknown;
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const event = { preventDefault: vi.fn(), returnValue: undefined } as unknown as BeforeUnloadEvent;
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handler(event);
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expect(event.preventDefault).toHaveBeenCalled();
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expect(event.returnValue).toBe("common.unsavedChanges.message");
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});
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it("does not set returnValue when there are no unsaved changes", () => {
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const addListenerSpy = vi.spyOn(window, "addEventListener");
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renderHook(() => useUnsavedChangesWarning(false));
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const beforeUnloadCall = addListenerSpy.mock.calls.find((call) => call[0] === "beforeunload");
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const handler = beforeUnloadCall?.[1] as (event: BeforeUnloadEvent) => unknown;
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const event = { preventDefault: vi.fn(), returnValue: undefined } as unknown as BeforeUnloadEvent;
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handler(event);
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expect(event.preventDefault).not.toHaveBeenCalled();
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expect(event.returnValue).toBeUndefined();
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});
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});
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