rm -f this-doesnt-exist
! redo this-doesnt-exist >/dev/null 2>&1 || exit 32  # expected to fail
! redo-ifchange this-doesnt-exist >/dev/null 2>&1 || exit 33  # expected to fail
redo-ifcreate this-doesnt-exist >/dev/null 2>&1 || exit 34  # expected to pass


rm -f fail
! redo-ifchange fail >/dev/null 2>&1 || exit 44  # expected to fail

touch fail
../flush-cache
# since we created this file by hand, fail.do won't run, so it won't fail.
redo-ifchange fail >/dev/null 2>&1 || exit 55  # expected to pass

# Make sure we don't leave this lying around for future runs, or redo
# might mark it as "manually modified" (since we did!)
rm -f fail

rm -f maybe-fail
: >want-fail
! redo-ifchange maybe-fail >/dev/null 2>&1 || exit 66
rm -f want-fail
../flush-cache
redo-ifchange maybe-fail || exit 67  # failed last time, must retry
: >want-fail
../flush-cache
redo-ifchange maybe-fail || exit 68  # passed last time, no dep, no redo
rm -f want-fail