Increase test coverage for /modules/ui (#3314)

* Increase test coverage for `/modules/ui`

Co-authored-by: v1b3m <vibenjamin6@gmail.com>
Co-authored-by: FellipeMTX <fellipefacdir@gmail.com>
Co-authored-by: Fellipe Montes <102544529+FellipeMTX@users.noreply.github.com>

* Merge main

Co-authored-by: v1b3m <vibenjamin6@gmail.com>
Co-authored-by: FellipeMTX <fellipefacdir@gmail.com>
Co-authored-by: Fellipe Montes <102544529+FellipeMTX@users.noreply.github.com>

* Fix tests

* Fix tests

* Fix

---------

Co-authored-by: gitstart-twenty <gitstart-twenty@users.noreply.github.com>
Co-authored-by: v1b3m <vibenjamin6@gmail.com>
Co-authored-by: FellipeMTX <fellipefacdir@gmail.com>
Co-authored-by: Fellipe Montes <102544529+FellipeMTX@users.noreply.github.com>
Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/ui/display/icon/hooks/__tests__/useIcons.test.ts

@@ -0,0 +1,40 @@
+import { renderHook } from '@testing-library/react';
+import * as recoil from 'recoil';
+
+import { Icon123, IconBuildingSkyscraper, IconUser } from '@/ui/display/icon';
+import { useIcons } from '@/ui/display/icon/hooks/useIcons';
+
+describe('useIcons', () => {
+  const mockedStateIcons = {
+    IconUser,
+    Icon123,
+    IconBuildingSkyscraper,
+  };
+  jest
+    .spyOn(recoil, 'useRecoilValue')
+    .mockImplementationOnce(() => mockedStateIcons);
+  const { result } = renderHook(() => useIcons(), {
+    wrapper: recoil.RecoilRoot,
+  });
+
+  it('returns default icon when no icon key is provided', () => {
+    expect(result.current.getIcon()).toEqual(Icon123);
+  });
+
+  it('returns the specified icon if the icon key exists in the iconsState', () => {
+    expect(result.current.getIcon('Icon123')).toEqual(Icon123);
+    expect(result.current.getIcon('IconUser')).toEqual(IconUser);
+    expect(result.current.getIcon('IconBuildingSkyscraper')).toEqual(
+      IconBuildingSkyscraper,
+    );
+  });
+
+  it('returns default icon if the specified icon key does not exist in the iconsState', () => {
+    expect(result.current.getIcon('nonExistentKey')).toEqual(Icon123);
+  });
+
+  it('returns all icons in getIcons', () => {
+    expect(result.current.getIcons()).toEqual(mockedStateIcons);
+    expect(Object.keys(result.current.getIcons())).toHaveLength(3);
+  });
+});