Explain heuristics used for "uncovered files" in the UI #97
Description
From Marco:
For JavaScript files, the top-level code is always covered if the file is loaded, so we came up with a heuristic: a "zero coverage" file is a file which has at least one function and whose functions are all not covered.
For C/C++ it's easier, as there's no top-level code and the code is always in functions. In this case, a "zero coverage" file is a file which has no covered lines.
It would great to put this in the UI somewhere for new users. Maybe add a "?" icon next to the uncovered files option that can show this explanation on hover.