tests/test-status-inprocess.py

#!/usr/bin/env python
from __future__ import absolute_import, print_function
from mercurial.ui import (
    ui,
)
from mercurial.localrepo import (
    localrepository,
)
from mercurial.commands import (
    add,
    commit,
    status,
)

u = ui()

print('% creating repo')
repo = localrepository(u, '.', create=True)

f = open('test.py', 'w')
try:
    f.write('foo\n')
finally:
    f.close

print('% add and commit')
add(u, repo, 'test.py')
commit(u, repo, message='*')
status(u, repo, clean=True)


print('% change')
f = open('test.py', 'w')
try:
    f.write('bar\n')
finally:
    f.close()

# this would return clean instead of changed before the fix
status(u, repo, clean=True, modified=True)