Clean up tests to make it easier to modify them

[ghost]

In my push to get 100% code coverage, I introduced some unwieldy tests, especially in the pages folder.

There are a lot of table-driven tests in here where the tables are made up of large (many column) tuples with no naming or documentation to know what each column represents. You have to look at the test and try to infer it which is error-prone.

A better way to do this would be to use namedtuples, and update the references in the tests from their index to their column name instead.