Fix total coverage

[vitorenesduarte]

Hey,

Given module a with 1 line, and module b with 99 lines

Currently

  |------------------------|------------|
  |                module  |  coverage  |
  |------------------------|------------|
  |                     a  |        0%  |
  |                     b  |      100%  |
  |------------------------|------------|
  |                 total  |       50%  |
  |------------------------|------------|

Expected

  |------------------------|------------|
  |                module  |  coverage  |
  |------------------------|------------|
  |                     a  |        0%  |
  |                     b  |      100%  |
  |------------------------|------------|
  |                 total  |       99%  |
  |------------------------|------------|

[ferd]

Seems reasonable to me, should merge if it passes tests. Will ask @talentdeficit to review since he wrote the original stuff there I believe.

[vitorenesduarte]

@ferd I just noticed something else.
When calculating the coverage percentage, modules with 0 lines will be reported with 0% instead of 100%.
Should I incorporate that in this PR as well?

[ferd]

Yeah I think that would make sense. It's not that there's 0 lines covered, but that there's 0 lines not being covered.

[vitorenesduarte]

Yes. In this case, it was specific to modules with 0 lines to be covered.