Repository: RustPython/RustPython
File: Lib/test/test_pty.py (Python)

Code before:
        blocking = os.get_blocking(master_fd)
        try:
            os.set_blocking(master_fd, False)
            try:
                s1 = os.read(master_fd, 1024)
                self.assertEqual(b'', s1)
            except OSError as e:
                if e.errno != errno.EAGAIN:
                    raise
        finally:
            # Restore the original flags.
            os.set_blocking(master_fd, blocking)

        debug("Writing to slave_fd")
        write_all(slave_fd, TEST_STRING_1)
        s1 = _readline(master_fd)
        self.assertEqual(b'I wish to buy a fish license.\n',
                         normalize_output(s1))

        debug("Writing chunked output")
        write_all(slave_fd, TEST_STRING_2[:5])
        write_all(slave_fd, TEST_STRING_2[5:])
        s2 = _readline(master_fd)
        self.assertEqual(b'For my pet fish, Eric.\n', normalize_output(s2))

    @unittest.skip('TODO: RUSTPYTHON; AttributeError: module "tty" has no attribute "tcgetwinsize"')
    def test_fork(self):
        debug("calling pty.fork()")
        pid, master_fd = pty.fork()
        self.addCleanup(os.close, master_fd)
        if pid == pty.CHILD:
            # stdout should be connected to a tty.
            if not os.isatty(1):
                debug("Child's fd 1 is not a tty?!")
                os._exit(3)

            # After pty.fork(), the child should already be a session leader.
            # (on those systems that have that concept.)
            debug("In child, calling os.setsid()")
            try:
                os.setsid()
            except OSError:
                # Good, we already were session leader
                debug("Good: OSError was raised.")
                pass
            except AttributeError:
                # Have pty, but not setsid()?
                debug("No setsid() available?")
                pass
            except:
                # We don't want this error to propagate, escaping the call to

Review comment (bug):
```suggestion
    @unittest.expectedFailure  # TODO: RUSTPYTHON; AttributeError: module "tty" has no attribute "tcgetwinsize"
```

Code after:
        blocking = os.get_blocking(master_fd)
        try:
            os.set_blocking(master_fd, False)
            try:
                s1 = os.read(master_fd, 1024)
                self.assertEqual(b'', s1)
            except OSError as e:
                if e.errno != errno.EAGAIN:
                    raise
        finally:
            # Restore the original flags.
            os.set_blocking(master_fd, blocking)

        debug("Writing to slave_fd")
        write_all(slave_fd, TEST_STRING_1)
        s1 = _readline(master_fd)
        self.assertEqual(b'I wish to buy a fish license.\n',
                         normalize_output(s1))

        debug("Writing chunked output")
        write_all(slave_fd, TEST_STRING_2[:5])
        write_all(slave_fd, TEST_STRING_2[5:])
        s2 = _readline(master_fd)
        self.assertEqual(b'For my pet fish, Eric.\n', normalize_output(s2))

    @unittest.skip('TODO: RUSTPYTHON; "Not runnable. tty.tcgetwinsize" is required to setUp')
    def test_fork(self):
        debug("calling pty.fork()")
        pid, master_fd = pty.fork()
        self.addCleanup(os.close, master_fd)
        if pid == pty.CHILD:
            # stdout should be connected to a tty.
            if not os.isatty(1):
                debug("Child's fd 1 is not a tty?!")
                os._exit(3)

            # After pty.fork(), the child should already be a session leader.
            # (on those systems that have that concept.)
            debug("In child, calling os.setsid()")
            try:
                os.setsid()
            except OSError:
                # Good, we already were session leader
                debug("Good: OSError was raised.")
                pass
            except AttributeError:
                # Have pty, but not setsid()?
                debug("No setsid() available?")
                pass
            except:
                # We don't want this error to propagate, escaping the call to