First batch of modules/activities tests (#4446)

Co-authored-by: gitstart-twenty <gitstart-twenty@users.noreply.github.com>
Co-authored-by: v1b3m <vibenjamin6@gmail.com>
Co-authored-by: Matheus <matheus_benini@hotmail.com>
Co-authored-by: Thiago Nascimbeni <tnascimbeni@gmail.com>

packages/twenty-front/src/modules/activities/hooks/__tests__/useActivityById.test.ts

@@ -0,0 +1,38 @@
+import { renderHook } from '@testing-library/react';
+import { RecoilRoot } from 'recoil';
+
+import { useActivityById } from '../useActivityById';
+
+jest.mock('@/object-record/hooks/useFindOneRecord', () => ({
+  useFindOneRecord: jest.fn(() => ({
+    record: {
+      activity: {
+        id: 'test-activity-id',
+        name: 'Test Activity',
+        description: 'This is a test activity',
+      },
+    },
+    loading: false,
+  })),
+}));
+
+describe('useActivityById', () => {
+  it('fetches activity by id and returns the activity and loading state', async () => {
+    const activityId = 'test-activity-id';
+    const { result } = renderHook(() => useActivityById({ activityId }), {
+      wrapper: RecoilRoot,
+    });
+
+    expect(result.current.loading).toBe(false);
+
+    expect(result.current.activity).toEqual({
+      activity: {
+        id: 'test-activity-id',
+        name: 'Test Activity',
+        description: 'This is a test activity',
+      },
+      activityTargets: [],
+      comments: [],
+    });
+  });
+});