Add tests

app/soapbox/features/feed-filtering/__tests__/feed-carousel.test.tsx

@@ -2,8 +2,7 @@ import userEvent from '@testing-library/user-event';
 import { Map as ImmutableMap } from 'immutable';
 import React from 'react';
 
-import { __stub } from '../../../api';
-import { render, screen, waitFor } from '../../../jest/test-helpers';
+import { mock, render, screen, waitFor } from '../../../jest/test-helpers';
 import FeedCarousel from '../feed-carousel';
 
 jest.mock('../../../hooks/useDimensions', () => ({
@@ -55,63 +54,63 @@ describe('<FeedCarousel />', () => {
       };
     });
 
-    it('should render the Carousel', () => {
-      store.carousels = {
-        avatars: [
-          { account_id: '1', acct: 'a', account_avatar: 'https://example.com/some.jpg' },
-        ],
-      };
+    describe('with avatars', () => {
+      beforeEach(() => {
+        mock.onGet('/api/v1/truth/carousels/avatars')
+          .reply(200, [
+            { account_id: '1', acct: 'a', account_avatar: 'https://example.com/some.jpg' },
+            { account_id: '2', acct: 'b', account_avatar: 'https://example.com/some.jpg' },
+            { account_id: '3', acct: 'c', account_avatar: 'https://example.com/some.jpg' },
+            { account_id: '4', acct: 'd', account_avatar: 'https://example.com/some.jpg' },
+          ]);
+      });
 
-      render(<FeedCarousel />, undefined, store);
+      it('should render the Carousel', async() => {
+        render(<FeedCarousel />, undefined, store);
 
-      expect(screen.queryAllByTestId('feed-carousel')).toHaveLength(1);
+        await waitFor(() => {
+          expect(screen.queryAllByTestId('feed-carousel')).toHaveLength(1);
+        });
+      });
     });
 
     describe('with 0 avatars', () => {
       beforeEach(() => {
-        store.carousels = {
-          avatars: [],
-        };
+        mock.onGet('/api/v1/truth/carousels/avatars').reply(200, []);
       });
 
-      it('renders the error message', () => {
+      it('renders nothing', async() => {
         render(<FeedCarousel />, undefined, store);
 
-        expect(screen.queryAllByTestId('feed-carousel-error')).toHaveLength(0);
+        await waitFor(() => {
+          expect(screen.queryAllByTestId('feed-carousel')).toHaveLength(0);
+        });
       });
     });
 
     describe('with a failed request to the API', () => {
       beforeEach(() => {
-        store.carousels = {
-          avatars: [],
-          error: true,
-        };
+        mock.onGet('/api/v1/truth/carousels/avatars').networkError();
       });
 
-      it('renders the error message', () => {
+      it('renders the error message', async() => {
         render(<FeedCarousel />, undefined, store);
 
-        expect(screen.getByTestId('feed-carousel-error')).toBeInTheDocument();
+        await waitFor(() => {
+          expect(screen.getByTestId('feed-carousel-error')).toBeInTheDocument();
+        });
       });
     });
 
     describe('with multiple pages of avatars', () => {
       beforeEach(() => {
-        store.carousels = {
-          error: false,
-          avatars: [],
-        };
-
-        __stub(mock => {
-          mock.onGet('/api/v1/truth/carousels/avatars')
-            .reply(200, [
-              { account_id: '1', acct: 'a', account_avatar: 'https://example.com/some.jpg' },
-              { account_id: '2', acct: 'b', account_avatar: 'https://example.com/some.jpg' },
-              { account_id: '3', acct: 'c', account_avatar: 'https://example.com/some.jpg' },
-              { account_id: '4', acct: 'd', account_avatar: 'https://example.com/some.jpg' },
-            ]);
-        });
+        mock.onGet('/api/v1/truth/carousels/avatars')
+          .reply(200, [
+            { account_id: '1', acct: 'a', account_avatar: 'https://example.com/some.jpg' },
+            { account_id: '2', acct: 'b', account_avatar: 'https://example.com/some.jpg' },
+            { account_id: '3', acct: 'c', account_avatar: 'https://example.com/some.jpg' },
+            { account_id: '4', acct: 'd', account_avatar: 'https://example.com/some.jpg' },
+          ]);
 
         Element.prototype.getBoundingClientRect = jest.fn(() => {
           return {

app/soapbox/jest/test-helpers.tsx

@@ -1,6 +1,7 @@
 import { configureMockStore } from '@jedmao/redux-mock-store';
-import { QueryClientProvider } from '@tanstack/react-query';
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
 import { render, RenderOptions } from '@testing-library/react';
+import MockAdapter from 'axios-mock-adapter';
 import { merge } from 'immutable';
 import React, { FC, ReactElement } from 'react';
 import { IntlProvider } from 'react-intl';
@@ -10,7 +11,7 @@ import { Action, applyMiddleware, createStore } from 'redux';
 import thunk from 'redux-thunk';
 import '@testing-library/jest-dom';
 
-import { queryClient } from 'soapbox/queries/client';
+import API from 'soapbox/queries/client';
 
 import NotificationsContainer from '../features/ui/containers/notifications_container';
 import { default as rootReducer } from '../reducers';
@@ -28,8 +29,26 @@ const applyActions = (state: any, actions: any, reducer: any) => {
   return actions.reduce((state: any, action: any) => reducer(state, action), state);
 };
 
-const createTestStore = (initialState: any) => createStore(rootReducer, initialState, applyMiddleware(thunk));
+const mock = new MockAdapter(API, { onNoMatch: 'throwException' });
+const queryClient = new QueryClient({
+  logger: {
+    // eslint-disable-next-line no-console
+    log: console.log,
+    warn: console.warn,
+    error: () => { },
+  },
+  defaultOptions: {
+    queries: {
+      retry: false,
+    },
+  },
+});
 
+beforeEach(() => {
+  mock.reset();
+});
+
+const createTestStore = (initialState: any) => createStore(rootReducer, initialState, applyMiddleware(thunk));
 const TestApp: FC<any> = ({ children, storeProps, routerProps = {} }) => {
   let store: ReturnType<typeof createTestStore>;
   let appState = rootState;
@@ -71,6 +90,12 @@ const customRender = (
   ...options,
 });
 
+const queryWrapper: React.FC = ({ children }) => (
+  <QueryClientProvider client={queryClient}>
+    {children}
+  </QueryClientProvider>
+);
+
 const mockWindowProperty = (property: any, value: any) => {
   const { [property]: originalProperty } = window;
   delete window[property];
@@ -97,4 +122,6 @@ export {
   rootReducer,
   mockWindowProperty,
   createTestStore,
+  mock,
+  queryWrapper,
 };

app/soapbox/queries/__tests__/carousels.test.ts

@@ -0,0 +1,45 @@
+import { renderHook } from '@testing-library/react-hooks';
+
+import { mock, queryWrapper, waitFor } from 'soapbox/jest/test-helpers';
+
+import useCarouselAvatars from '../carousels';
+
+describe('useCarouselAvatars', () => {
+  describe('with a successul query', () => {
+    beforeEach(() => {
+      mock.onGet('/api/v1/truth/carousels/avatars')
+        .reply(200, [
+          { account_id: '1', acct: 'a', account_avatar: 'https://example.com/some.jpg' },
+          { account_id: '2', acct: 'b', account_avatar: 'https://example.com/some.jpg' },
+          { account_id: '3', acct: 'c', account_avatar: 'https://example.com/some.jpg' },
+          { account_id: '4', acct: 'd', account_avatar: 'https://example.com/some.jpg' },
+        ]);
+    });
+
+    it('is successful', async() => {
+      const { result } = renderHook(() => useCarouselAvatars(), {
+        wrapper: queryWrapper,
+      });
+
+      await waitFor(() => expect(result.current.isFetching).toBe(false));
+
+      expect(result.current.data?.length).toBe(4);
+    });
+  });
+
+  describe('with an unsuccessul query', () => {
+    beforeEach(() => {
+      mock.onGet('/api/v1/truth/carousels/avatars').networkError();
+    });
+
+    it('is successful', async() => {
+      const { result } = renderHook(() => useCarouselAvatars(), {
+        wrapper: queryWrapper,
+      });
+
+      await waitFor(() => expect(result.current.isFetching).toBe(false));
+
+      expect(result.current.error).toBeDefined();
+    });
+  });
+});

app/soapbox/queries/carousels.ts

@@ -1,6 +1,6 @@
 import { useQuery } from '@tanstack/react-query';
 
-import API from './client';
+import API from 'soapbox/queries/client';
 
 type Avatar = {
   account_id: string
@@ -13,17 +13,15 @@ const getCarouselAvatars = async() => {
   return data;
 };
 
-export default function useCarouselAvatars(): { data: Avatar[], isFetching: boolean, isError: boolean, isSuccess: boolean } {
-  const { data, isFetching, isError, isSuccess } = useQuery<Avatar[]>(['carouselAvatars'], getCarouselAvatars, {
+export default function useCarouselAvatars() {
+  const result = useQuery<Avatar[]>(['carouselAvatars'], getCarouselAvatars, {
     placeholderData: [],
   });
 
-  const avatars = data as Avatar[];
+  const avatars = result.data;
 
   return {
-    data: avatars,
-    isFetching,
-    isError,
-    isSuccess,
+    ...result,
+    data: avatars || [],
   };
 }