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import os
import subprocess
import sys
import unittest
from textwrap import dedent
from test.support import os_helper, requires_resource
from test.support.os_helper import TESTFN, TESTFN_ASCII
if sys.platform != "win32":
raise unittest.SkipTest("windows related tests")
import _winapi
import msvcrt
class TestFileOperations(unittest.TestCase):
def test_locking(self):
with open(TESTFN, "w") as f:
self.addCleanup(os_helper.unlink, TESTFN)
msvcrt.locking(f.fileno(), msvcrt.LK_LOCK, 1)
self.assertRaises(OSError, msvcrt.locking, f.fileno(), msvcrt.LK_NBLCK, 1)
def test_unlockfile(self):
with open(TESTFN, "w") as f:
self.addCleanup(os_helper.unlink, TESTFN)
msvcrt.locking(f.fileno(), msvcrt.LK_LOCK, 1)
msvcrt.locking(f.fileno(), msvcrt.LK_UNLCK, 1)
msvcrt.locking(f.fileno(), msvcrt.LK_LOCK, 1)
def test_setmode(self):
with open(TESTFN, "w") as f:
self.addCleanup(os_helper.unlink, TESTFN)
msvcrt.setmode(f.fileno(), os.O_BINARY)
msvcrt.setmode(f.fileno(), os.O_TEXT)
def test_open_osfhandle(self):
h = _winapi.CreateFile(TESTFN_ASCII, _winapi.GENERIC_WRITE, 0, 0, 1, 128, 0)
self.addCleanup(os_helper.unlink, TESTFN_ASCII)
try:
fd = msvcrt.open_osfhandle(h, os.O_RDONLY)
h = None
os.close(fd)
finally:
if h:
_winapi.CloseHandle(h)
def test_get_osfhandle(self):
with open(TESTFN, "w") as f:
self.addCleanup(os_helper.unlink, TESTFN)
msvcrt.get_osfhandle(f.fileno())
c = '\u5b57' # unicode CJK char (meaning 'character') for 'wide-char' tests
c_encoded = b'\x57\x5b' # utf-16-le (which windows internally used) encoded char for this CJK char
class TestConsoleIO(unittest.TestCase):
# CREATE_NEW_CONSOLE creates a "popup" window.
@requires_resource('gui')
def run_in_separated_process(self, code):
# Run test in a seprated process to avoid stdin conflicts.
# See: gh-110147
cmd = [sys.executable, '-c', code]
subprocess.run(cmd, check=True, capture_output=True,
creationflags=subprocess.CREATE_NEW_CONSOLE)
def test_kbhit(self):
code = dedent('''
import msvcrt
assert msvcrt.kbhit() == 0
''')
self.run_in_separated_process(code)
def test_getch(self):
msvcrt.ungetch(b'c')
self.assertEqual(msvcrt.getch(), b'c')
def check_getwch(self, funcname):
code = dedent(f'''
import msvcrt
from _testconsole import write_input
with open("CONIN$", "rb", buffering=0) as stdin:
write_input(stdin, {ascii(c_encoded)})
assert msvcrt.{funcname}() == "{c}"
''')
self.run_in_separated_process(code)
def test_getwch(self):
self.check_getwch('getwch')
def test_getche(self):
msvcrt.ungetch(b'c')
self.assertEqual(msvcrt.getche(), b'c')
def test_getwche(self):
self.check_getwch('getwche')
def test_putch(self):
msvcrt.putch(b'c')
def test_putwch(self):
msvcrt.putwch(c)
class TestOther(unittest.TestCase):
def test_heap_min(self):
try:
msvcrt.heapmin()
except OSError:
pass
if __name__ == "__main__":
unittest.main()
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