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import pytest
import sys
msvcrt = pytest.importorskip('msvcrt')
# not an applevel test: errno is not preserved
class TestMsvcrt:
def test_locking(self, tmpdir):
filename = tmpdir / 'locking_test'
filename.ensure()
import os, errno
fd = os.open(str(filename), 0)
try:
msvcrt.locking(fd, 1, 1)
# lock again: it fails
with pytest.raises(IOError) as e:
msvcrt.locking(fd, 1, 1)
assert e.value.errno == errno.EDEADLOCK
# unlock and relock sucessfully
msvcrt.locking(fd, 0, 1)
msvcrt.locking(fd, 1, 1)
finally:
os.close(fd)
def test_getch(self):
with pytest.raises(TypeError):
msvcrt.ungetch('a')
msvcrt.ungetch(b'a')
k = msvcrt.getch()
assert k == b'a'
def test_getwch(self):
msvcrt.ungetwch('a')
k = msvcrt.getwch()
assert k == u'a'
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