[Test Case for User Model]

[ShehrozIrfan]

Context

We're adding validation on first_name and last_name in this issue

Test cases required

So, for the above change, we need to add the test cases for this validation in spec/models/user_spec.rb
The test cases will test that the first_name and last_name only contains the alphabetical characters like from a-z or/and A-Z

Blocked by

This issue is blocked by: 50

So, when this issue is marked as closed then we need to work on test cases.