96 lines
2.6 KiB
TypeScript
96 lines
2.6 KiB
TypeScript
import { describe, it, expect, vi, beforeEach } from 'vitest';
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// Capture the beforeNavigate callback so tests can simulate navigation events
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let registeredBeforeNavigate:
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| ((nav: { cancel: () => void; to: { url: { href: string } } | null }) => void)
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| null = null;
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const mockGoto = vi.fn();
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vi.mock('$app/navigation', () => ({
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beforeNavigate: vi.fn((fn: typeof registeredBeforeNavigate) => {
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registeredBeforeNavigate = fn;
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}),
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goto: mockGoto
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}));
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const { createUnsavedWarning } = await import('./useUnsavedWarning.svelte');
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function simulateNavigate(href: string | null = '/somewhere') {
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const cancel = vi.fn();
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registeredBeforeNavigate?.({
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cancel,
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to: href ? { url: { href } } : null
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});
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return cancel;
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}
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beforeEach(() => {
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registeredBeforeNavigate = null;
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mockGoto.mockClear();
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});
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describe('createUnsavedWarning', () => {
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it('isDirty starts false', () => {
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const w = createUnsavedWarning();
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expect(w.isDirty).toBe(false);
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});
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it('markDirty sets isDirty to true', () => {
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const w = createUnsavedWarning();
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w.markDirty();
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expect(w.isDirty).toBe(true);
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});
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it('markDirty hides any existing warning banner', () => {
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const w = createUnsavedWarning();
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// Simulate a navigation event that showed the banner
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w.markDirty();
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simulateNavigate();
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expect(w.showUnsavedWarning).toBe(true);
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// Typing again should hide the banner (form input re-triggers markDirty)
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w.markDirty();
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expect(w.showUnsavedWarning).toBe(false);
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});
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it('beforeNavigate cancels and shows banner when dirty', () => {
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const w = createUnsavedWarning();
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w.markDirty();
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const cancel = simulateNavigate('/admin/users');
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expect(cancel).toHaveBeenCalled();
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expect(w.showUnsavedWarning).toBe(true);
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});
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it('beforeNavigate stores the target URL', () => {
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const w = createUnsavedWarning();
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w.markDirty();
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simulateNavigate('/admin/users');
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expect(w.discardTarget).toBe('/admin/users');
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});
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it('beforeNavigate does not cancel when not dirty', () => {
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createUnsavedWarning();
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const cancel = simulateNavigate('/admin/users');
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expect(cancel).not.toHaveBeenCalled();
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});
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it('discard resets state and navigates to target', () => {
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const w = createUnsavedWarning();
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w.markDirty();
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simulateNavigate('/admin/tags');
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w.discard();
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expect(w.isDirty).toBe(false);
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expect(w.showUnsavedWarning).toBe(false);
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expect(mockGoto).toHaveBeenCalledWith('/admin/tags');
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});
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it('clearOnSuccess resets isDirty and warning', () => {
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const w = createUnsavedWarning();
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w.markDirty();
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simulateNavigate('/somewhere');
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w.clearOnSuccess();
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expect(w.isDirty).toBe(false);
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expect(w.showUnsavedWarning).toBe(false);
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});
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});
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