LilyPond Contributor's Guide: 9.7 MusicXML tests

## 9.7 MusicXML tests

LilyPond comes with a complete set of regtests for the MusicXML language. Originally developed to test ‘`musicxml2ly`’, these regression tests can be used to test any MusicXML implementation.

The MusicXML regression tests are found at ‘`input/regression/musicxml/`’.

The output resulting from running these tests through ‘`muscxml2ly`’ followed by ‘`lilypond`’ is available in the LilyPond documentation:

>     http://lilypond.org/doc/latest/input/regression/musicxml/collated-files

#### LilyPond — Contributor’s Guide