new testing environment with testing database

[karliatto]

• new test environment with a database for testing with automating deleting after test
• new tests adapted to new structure
• readme with explanation how to create testing database and how to run tests

[chill117]

Looks like there is an issue with the travis CI configuration:

Error Pool2 - Error: ER_ACCESS_DENIED_ERROR: Access denied for user 'bitstarterTest'@'localhost' (using password: YES)

See https://travis-ci.org/Learn-by-doing/bitstarter/jobs/179870423

The travis CI configuration file needs pre-install instructions to setup the test database before the tests are run: https://github.com/Learn-by-doing/bitstarter/blob/master/.travis.yml

[karliatto]

I see, I found some information : https://docs.travis-ci.com/user/database-setup/ https://docs.travis-ci.com/user/languages/javascript-with-nodejs/

[chill117]

@karliatto Yes, I think those are the correct instructions.

Also, if you ever need to trigger the travis build just close and re-open the pull request.