Provide documentation and dependencies for running tests

[arbennett]

The contributing documentation describes how tests are structured and tools used, but doesn't actually say how to run the tests. I think adding a sentence or two describing how to run the tests would be useful. Perhaps something like:

Following installation, to run the test suite first navigate to the tests directory then use the pytest command.

Additionally, in the setup.py it would be useful to add tests_require=['pytest'] for completeness.

[Alcampopiano]

Hello @arbennett,

Thank you for this suggestion. I have added the following sentence as suggested:

To run the test suite, first navigate to the "tests" directory then use the pytest command from your terminal.

I have also added tests_require=['pytest'] to the setup file. Thank you for that helpful suggestion.

I will close this issue but feel free to reopen if I have not fully addressed the issue.