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Ran 08 Mar 2019 08:16AM UTC

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Committed 08 Mar 2019 08:14AM UTC coverage: 84.663% (+2.6%) from 82.036%

Job # 695.3

Build Type

push

travis-ci

Committed by

fingolfin

Commit Message

Improve coverage heuristic in function_body_lines

The purpose of function_body_lines is to find functions which are "dead"
(= never executed by test suite), and mark them as code, because Julia's
built-in coverage code does not do that; if we were to rely on it, such
functions would be marked as non-code, and thus they do not show up in
the overall code coverage percentage.

But our current heuristic is too aggressive in so far as that Julia also
sometimes marks code lines as "is not code" in the middle of functions
that are being executed (most likely due to inlining and other
optimizations). If we mark those lines as code, they will show up as
uncovered, with no way for the package author to change this.

With this commit, we refine our heuristic: we only apply it to functions
for which Julia recorded no coverage at all, as before; but if even just
one line in the function body has coverage information, we do not touch
the code lines in it at all.

Some care must be taken to make sure this works right for nested
functions.

Coverage Stats

276 of 326 relevant lines covered (84.66%)

138.62 hits per line

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