test: useFetchAppSettings with error or no data

packages/core/src/react/hooks/__tests__/useFetchAppSettings.tsx

@@ -1,7 +1,9 @@
-import { renderHook } from '@testing-library/react';
+import { renderHook, waitFor } from '@testing-library/react';
 import { expectTypeOf } from 'expect-type';
 import { AppEntity, EndpointParams } from '../../../data';
 import { useFetchAppSettings } from '../useFetchAppSettings';
+import * as useFetchModule from '../useFetch';
+import { mockUseFetchErrorResponse } from '../mocks';
 
 describe('useFetchAppSettings types', () => {
 	it('allows overriding types', () => {
@@ -23,4 +25,22 @@ describe('useFetchAppSettings types', () => {
 			| undefined
 		>();
 	});
+
+	it('handles response if has error or there is no data', async () => {
+		const spyUseFetch = jest
+			.spyOn(useFetchModule, 'useFetch')
+			.mockReturnValueOnce(mockUseFetchErrorResponse);
+		const { result } = renderHook(() => useFetchAppSettings({ includeCustomSettings: true }));
+
+		await waitFor(() => {
+			expect(spyUseFetch).toHaveBeenCalledTimes(1);
+			expect(result.current.error).toBe('Not found');
+			expect(result.current.loading).toBe(true);
+			expect(() => result.current.data).not.toThrow();
+			expect(() => result.current.data?.posts).toThrow();
+			expect(result.current.isMainQuery).toBe(true);
+		});
+
+		spyUseFetch.mockRestore();
+	});
 });