File collisions in coverage report html

[nedbat]

Originally reported by Arthur Goldberg (Bitbucket: arthurgoldberg, GitHub: Unknown)

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The filename map can create collisions. See the screenshot.

In the example, an attempt to view "wc_sim/bug/a/b_c.py" actually views "wc_sim/bug/a_b/c.py".

To resolve this, instead of replacing directory separators with '_', use a perfect hash to generate a unique integer for each module. The pathname to the module can be appended to the perfect hash if it is important to see the pathname in the html filename.

Arthur

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• Bitbucket: https://bitbucket.org/ned/coveragepy/issue/584

[nedbat]

Original comment by István Bede (Bitbucket: ibede, GitHub: ibede)

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That would resolve our issue #580 either ;)

[nedbat]

This is fixed in 4d05dde.

[nedbat]

This is now released as part of coverage 6.0b1.