Scenario 1.1. Signup

1.1.F3. Sign up fails when email already exists.

• GIVEN user visit signup page

• WHEN user type "admin2" into input "username"
• AND user type "admin@example.com" into input "email"
• AND user type "admin1234" into input "password"
• AND user type "admin1234" into input "confirm-password"
• AND user click button "sign-up"
• THEN user see "The email field already exists"