Create User model tests

[rmuehe]

Run the following to see the new tests pass:
bundle exec rspec -fd

This PR is the result of

1. git clone https://github.com/jimenezmiguela/Help_Find_Back.git
2. git checkout -b tests
3. bundle install
4. yarn install
5. db:migrate
6. key creation
7. file creation: spec/models/user_spec.rb
8. git add -A
9. git commit -m "Create User model tests"
10. git push origin tests

[mechamanny]

Great additions! 2 notes:

• The yarn_integrity file should be added to you .gitignore list, I don't think that this is a file that we need checked into the main source code.

• In the future, you might want to focus your testing efforts on the developer created logic and the core functionality of the application. Rails does a good job of testing it's methods like validates, presence, and belongs to. The tests included are useful, but not as useful as something that covers the developer created logic. Most of this lives in the controller, since this is an API. Consider adding request specs and it will cover a lot of these test cases for free!

Also, I am going to refrain from approving any PRs, so I would tag one of your classmates to get an approval.

[rmuehe]

Agreed.
However, this PR is a test of our ability:

• to spot issues like unintended additions
• to communicate
• to merge

[inlibra-cpa]

Ryan left our team, I'm approving his improvements.