[Mecha Munch Management]: Modified Test Error Messages & Fixed Ordering Tests

[BethanyG]

Given the modifications to the runner that remove the test data from the subtests headlines in the UI, the error messages for failed tests and subtests needed modification. New error messages now include the function with the arguments it is called with, in addition to the actual result and the expected result.

Also discovered errors in the test data and methodology for two tests:

test_send_to_store() and test_sort_entries()

Because dicts are hashmaps, two will compare equal if they have the same keys and values even if those appear in a different order. While insertion order is guaranteed for dictionaries in Python, that ordering is not used for equality tests. 😱 so these tests were always passing....

To fix this issue, the assert check now converts the input and expected dicts into OrderedDicts (where order does matter for equality).

Additionally, multiple result_data dicts were not actually in sorted order, so that has also been corrected.

Sadly, this will mean a requeue/retest of student solutions for this exercise.

[iHiD]

Not reviewing the code, but happy for you to merge this and student's solutions should auto get re-tested