import pytest
import signal

from billiard.util import set_pdeathsig, get_pdeathsig

from billiard.compat import _winapi
from t import skip


@skip.unless_win32()
class test_win32_module:

    @pytest.mark.parametrize('name', [
        'NULL',
        'ERROR_ALREADY_EXISTS',
        'ERROR_PIPE_BUSY',
        'ERROR_PIPE_CONNECTED',
        'ERROR_SEM_TIMEOUT',
        'ERROR_MORE_DATA',
        'ERROR_BROKEN_PIPE',
        'ERROR_IO_PENDING',
        'ERROR_NETNAME_DELETED',
        'GENERIC_READ',
        'GENERIC_WRITE',
        'DUPLICATE_SAME_ACCESS',
        'DUPLICATE_CLOSE_SOURCE',
        'INFINITE',
        'NMPWAIT_WAIT_FOREVER',
        'OPEN_EXISTING',
        'PIPE_ACCESS_DUPLEX',
        'PIPE_ACCESS_INBOUND',
        'PIPE_READMODE_MESSAGE',
        'PIPE_TYPE_MESSAGE',
        'PIPE_UNLIMITED_INSTANCES',
        'PIPE_WAIT',
        'PROCESS_ALL_ACCESS',
        'PROCESS_DUP_HANDLE',
        'WAIT_OBJECT_0',
        'WAIT_ABANDONED_0',
        'WAIT_TIMEOUT',
        'FILE_FLAG_FIRST_PIPE_INSTANCE',
        'FILE_FLAG_OVERLAPPED',
    ])
    def test_constants(self, name):
        assert getattr(_winapi, name) is not None

    @pytest.mark.parametrize('name', [
        'Overlapped',
        'CloseHandle',
        'GetLastError',
        'OpenProcess',
        'ExitProcess',
        'ConnectNamedPipe',
        'CreateFile',
        'WriteFile',
        'ReadFile',
        'CreateNamedPipe',
        'SetNamedPipeHandleState',
        'WaitNamedPipe',
        'PeekNamedPipe',
        'WaitForMultipleObjects',
        'WaitForSingleObject',
        'GetCurrentProcess',
        'GetExitCodeProcess',
        'TerminateProcess',
        'DuplicateHandle',
        'CreatePipe',
    ])
    def test_functions(self, name):
        assert getattr(_winapi, name)

    def test_set_pdeathsig(self):
        with pytest.raises(OSError):
            set_pdeathsig(signal.SIGTERM)

    def test_get_pdeathsig(self):
        with pytest.raises(OSError):
            get_pdeathsig()
