Noise testing

Maintainer:Masatake YAMATO <>

After enjoying developing Semi-fuzz testing, I’m looking for a more unfair approach. Run

$ make noise LANGUAGES=LANG1[,LANG2,...]

It takes a long time, especially with VG=1, so this cannot be run under Travis CI. However, it is a good idea to run it locally.

The noise target generates test cases by inserting or deleting one character to the test cases of Units.