[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5582 midi regtest results change each time "make test" is repeated

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This problem is being addressed with others in the patch tracked by Issue 5584.

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[issues:#5582] midi regtest results change each time "make test" is repeated

Status: Accepted
Created: Tue Oct 22, 2019 12:03 AM UTC by Dan Eble
Last Updated: Tue Oct 22, 2019 11:40 AM UTC
Owner: Dan Eble

If make test is run more than once, there are a bunch of changes in input/regression/midi/out-test the second time that were not reported the first time. It looks like a file name collision between (a) the ly file produced by converting to midi and back, and (b) the ly file produced when lilypond-book is run. At some point, lilypond-book willingly modifies the file in place, so it changes with each make test.

Reproduce the issue relatively quickly like this:

 make test-clean

 make -C input/regression/midi out=test lysdoc-test
 cp -a input/regression/midi/out-test <before>

 make -C input/regression/midi out=test lysdoc-test
 cp -a input/regression/midi/out-test <after>

 compare <before> and <after>

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