#161966605 signup validation

[salma-nyagaka]

What does this PR do?

Adds descriptive validations errors to the registration functionality

Description of Task to be completed?

• validate email field
• validate username field
• validate the password field

How should this be manually tested?

• git clone https://github.com/andela/ah-technocrats.git
• cd ah-technocrats
• git checkout ft-signup-validation-161966605
• virtualenv venv
• source venv/bin/activate
• pip install -r requirements.txt
• python manage.py makemigrations
• python manage.py migrate
• python manage.py runserver

Any background context you want to provide?

Users should receive a descriptive error message when they enter invalid user parameters in an attempt to signup.

What are the relevant pivotal tracker stories?

#161966605

Checklist:

• My code follows the style guidelines of this project
• At least 2 people have reviewed my PR
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• My PR has one commit.

USERNAME WITH SPACES BETWEEN CHARACTERS

USERNAME WITH NUMERICALS ONLY

USERNAME WITH INVALID CHARACTERS

SHORT USERNAME

USERNAME EXISTS

PASSWORD WITH LETTERS ONLY

SHORT PASSWORD

PASSWORD WITH NO SPECIAL CHARACTER

PASSWORD WITH NUMBERS ONLY

[Mnickii]

The steps in how should this be manually tested
are not sufficient

[SilasKenneth]

Nice illustrations with screenshots

[Mnickii]

Fix the failing tests and if done, remove the WIP label.
Very thorough screenshots. Nice!

[Mnickii]

LGTM. Nice work!