Define a constant instead of duplicating
app/api/user/auth.py:
-Define a constant instead of duplicating this literal "Invalid email." 3 times
test/test_auth.py:
-Define a constant instead of duplicating this literal "Incorrect code" 21 times
-Define a constant instead of duplicating this literal "No token found" 6 times
-Define a constant instead of duplicating this literal "Invalid Email or password" 3 times -Define a constant instead of duplicating this literal "Incorrect message" 18 times