Some of the programming best practices

1. Unit Tests should not be dependent on ordering.

2. The database connection should be mocked or use an in-memory database such as H2 when using in unit test.

3. Do now use try/catches in Jnit and just throw Exception from the test. JUnit will handle this better.

4. Use Constant.equals(variable) rather than var.equals(const) to avoid NullPointerException.