GetTxOrFailTesting creates and returns a database transaction, or will end the unit test by calling t.Fatal().

MustConnect connects and returns a database connection, or calls os.Exit(1).

SetupBenchmarkDatabase creates and returns an empty database, using the the database name foo_test, where 'foo' is the name in the config.

SetupTestingDatabase creates and returns an empty database, using the the database name foo_test, where 'foo' is the name in the config.

ErrDuplicateEntry indicates a 'unique' constraint violation on insert.

ErrNoResults indicates the MySQL query returned no rows.

Config holds the database configuration, required for connecting to and using the database.