Describe the bug

In lines 119 and 122 of test_resolution_matrix option norm is set to string 'norm' rather than to variable norm, i.e. it does not loop through different options for norm.

Steps to reproduce

Just run the test.

Expected results

Should test different norm options.

Actual results

Only tests option 'norm'.

Additional information

I'll need to rewrite the corresponding section of the test.