Fix admin modals replaying old action results after create or edit

src/routes/(protected)/admin/users/page.svelte.spec.ts

@@ -0,0 +1,64 @@
+import { page } from 'vitest/browser';
+import { describe, it, expect, vi } from 'vitest';
+import { render } from 'vitest-browser-svelte';
+import type { PageProps } from './$types';
+
+vi.mock('$app/forms', () => ({
+	enhance: () => () => {}
+}));
+
+import Page from './+page.svelte';
+
+const superAdmin = {
+	id: 'admin-1',
+	name: 'Super Admin',
+	roleId: 1,
+	roleName: 'SUPER'
+};
+
+function makeData(overrides: Partial<PageProps['data']> = {}): PageProps['data'] {
+	return {
+		records: [],
+		roleOptions: [{ id: 4, name: 'USER' }],
+		adminUser: superAdmin,
+		userRoleId: 1,
+		...overrides
+	};
+}
+
+async function clickButton(name: string) {
+	const loc = page.getByRole('button', { name });
+	const el = (await loc.element()) as HTMLElement;
+	el.click();
+}
+
+describe('users admin page', () => {
+	it('does not replay a stale success result when reopening the create modal', async () => {
+		render(Page, {
+			params: {},
+			data: makeData(),
+			form: { success: true, action: 'upsert' }
+		});
+
+		await clickButton('New User');
+
+		await expect.element(page.getByRole('button', { name: 'Create User' })).toBeInTheDocument();
+		expect(page.getByText('User created').elements()).toHaveLength(0);
+	});
+
+	it('does not replay a stale success result when opening the edit modal', async () => {
+		const record = { id: 'user-1', name: 'Jane Doe', email: 'jane@example.com', roleId: 4 };
+
+		render(Page, {
+			params: {},
+			data: makeData({ records: [record] }),
+			form: { success: true, action: 'upsert' }
+		});
+
+		const cell = (await page.getByRole('cell', { name: 'Jane Doe' }).element()) as HTMLElement;
+		cell.click();
+
+		await expect.element(page.getByRole('button', { name: 'Save User' })).toBeInTheDocument();
+		expect(page.getByText('User updated').elements()).toHaveLength(0);
+	});
+});