Untuck tests out of __tests__ directories, colocate with program files

src/api/hooks/groups/useGroups.test.ts

@@ -0,0 +1,47 @@
+import { __stub } from 'soapbox/api';
+import { buildGroup } from 'soapbox/jest/factory';
+import { renderHook, waitFor } from 'soapbox/jest/test-helpers';
+import { normalizeInstance } from 'soapbox/normalizers';
+
+import { useGroups } from './useGroups';
+
+const group = buildGroup({ id: '1', display_name: 'soapbox' });
+const store = {
+  instance: normalizeInstance({
+    version: '3.4.1 (compatible; TruthSocial 1.0.0+unreleased)',
+  }),
+};
+
+describe('useGroups hook', () => {
+  describe('with a successful request', () => {
+    beforeEach(() => {
+      __stub((mock) => {
+        mock.onGet('/api/v1/groups').reply(200, [group]);
+      });
+    });
+
+    it('is successful', async () => {
+      const { result } = renderHook(useGroups, undefined, store);
+
+      await waitFor(() => expect(result.current.isFetching).toBe(false));
+
+      expect(result.current.groups).toHaveLength(1);
+    });
+  });
+
+  describe('with an unsuccessful query', () => {
+    beforeEach(() => {
+      __stub((mock) => {
+        mock.onGet('/api/v1/groups').networkError();
+      });
+    });
+
+    it('is has error state', async() => {
+      const { result } = renderHook(useGroups, undefined, store);
+
+      await waitFor(() => expect(result.current.isFetching).toBe(false));
+
+      expect(result.current.groups).toHaveLength(0);
+    });
+  });
+});