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/utils/string/__test__/capitalize.test.ts

@@ -0,0 +1,11 @@
+import { capitalize } from '../capitalize';
+
+describe('capitalize', () => {
+  it('should capitalize a string', () => {
+    expect(capitalize('test')).toBe('Test');
+  });
+
+  it('should return an empty string if input is an empty string', () => {
+    expect(capitalize('')).toBe('');
+  });
+});