#65 No clear way to partition grading
There doesn't appear to be any way to combine the percentages (student test coverage, student tests passed, reference tests passed) other than multiplying all three together, nor is there any way to print any of these amounts as "advisory" measures to the students without factoring them into their score.
Different assignments should be able to have different requirements; and sometimes the teacher might want to grade test-case-writing separately from coding ability, but currently the only way to do this is to set up multiple "assignments" and have the student submit code separately to each one. With the multiplicative model there is a strong disincentive to including a test case that demonstrates knowledge of an important edge case even if not sure how to pass it, because including the extra test case will only lower the grade.
The simplest version of this would be a checkbox that says to combine the percentages additively---compute points by first taking the arithmetic average of the percentages and applying that, rather than multiplying them. A better fix, though this affects the UI more, is that if the teacher chooses to partition these elements of the grade, they can each have separate point allocations (i.e. have five fields in the submission profile "basic properties", including "test coverage", "student tests passed", "reference tests passed").
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