Backend testing

[jaymeklein]

Backend Unitary Tests

I made an average of three basic tests for each endpoint:

• Valid data request (expecting a successful return from the endpoint)
• Invalid data request (expecting an error message from the endpoint)
• Invalid json data request (expecting NO unhandled exception from the endpoint)

In total, the test_api.py file has now 31 functional tests (1 is an example of how i made them)

They are in the following structure:

def test_route_explain(self) -> None:
    """
    Brief description
    """
    data = {
        "key1": "value1",
        "key2": "value2"
    }

    # TODO: Warning / Question tho who is coding the backend

    response = True

    self.assertTrue(response, 'Should be True, but was {}'.format(response))

Changes to other files:

• As you might see, PyCharm automatically changed some files indentation and format, just let me know if that's a problem, i can disable it for the next PR;

• As we mentioned in #93, i added the return statement to the self.db.get method;

• Added the _remove_starting_slash method to the local_database.py, without it i was having some exceptions caused by the slash on the beginning of the strings;

I tried to follow the CONTRIBUTING.md in every way, if you find something that i should or should not do, please let me know.

I hope this PR is following everything you asked for.

Pull Requestor Checklist

• [ ] Does backend/database/database_config.py have the type of production?

• [ ] Does frontend/src/api/config.js have the correct server url, reading from the deployed instance at http://dolphinflashcards.com/api/?

• [x] I hadn't changed or used the front-end

Issue #87

[jacob-macleod]

Thanks for your work on this