Also, I tried testing the postgres function which I created for polling the edit_note and edit_data tables,
https://github.com/yellowHatpro/mb-exurl-ia-service/blob/master/tests/internet_archive_urls.rs#L78
this is how I proceeded:
- Created a fixture file which applies to the test db created for each test function. 
For Internet Archive URLs I did this:
https://github.com/yellowHatpro/mb-exurl-ia-service/blob/master/tests/fixtures/InternetArchiveUrls.sql
- Then I tried a couple of tests for CRUD methods.
- I then tested the pg notify postgres function.