looks like many of the tests for formats are essentially cut-and-pasted from one module to another
we could replace this with parametrized versions
not quite sure what's the best way -- parameter 'format' that is format name strings + "factory fixtures" that return appropriate data for each format when string is passed in?
Closing: tests are still format specific even after #161, but I think there will always be edge cases for specific formats we need to test, so this won't work
looks like many of the tests for formats are essentially cut-and-pasted from one module to another
we could replace this with parametrized versions
not quite sure what's the best way -- parameter 'format' that is format name strings + "factory fixtures" that return appropriate data for each format when string is passed in?