Add jest tests for twenty-front (#2983)

* Add jest tests for twenty-front

Co-authored-by: v1b3m <vibenjamin6@gmail.com>

* Fix tests

---------

Co-authored-by: gitstart-twenty <gitstart-twenty@users.noreply.github.com>
Co-authored-by: v1b3m <vibenjamin6@gmail.com>
Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/hooks/__tests__/useFirstMountState.test.ts

@@ -0,0 +1,23 @@
+import { renderHook } from '@testing-library/react';
+
+import { useFirstMountState } from '~/hooks/useFirstMountState';
+
+describe('useFirstMountState', () => {
+  it('should return true on first mount', () => {
+    const { result } = renderHook(() => {
+      return useFirstMountState();
+    });
+
+    expect(result.current).toBe(true);
+  });
+
+  it('should return false on second mount', () => {
+    const { result, rerender } = renderHook(() => {
+      return useFirstMountState();
+    });
+
+    rerender();
+
+    expect(result.current).toBe(false);
+  });
+});