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test_crashers.py
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151 lines (121 loc) · 4.06 KB
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import fcntl
import os
import pty
import struct
import sys
import termios
import textwrap
from bpython.test import unittest, TEST_CONFIG
from bpython.config import getpreferredencoding
try:
from twisted.internet import reactor
from twisted.internet.defer import Deferred
from twisted.internet.protocol import ProcessProtocol
from twisted.trial.unittest import TestCase as TrialTestCase
except ImportError:
class TrialTestCase:
pass
reactor = None
try:
import urwid
have_urwid = True
except ImportError:
have_urwid = False
try:
from nose.plugins.attrib import attr
except ImportError:
def attr(*args, **kwargs):
def identity(func):
return func
return identity
def set_win_size(fd, rows, columns):
s = struct.pack("HHHH", rows, columns, 0, 0)
fcntl.ioctl(fd, termios.TIOCSWINSZ, s)
class CrashersTest:
backend = "cli"
def run_bpython(self, input):
"""
Run bpython (with `backend` as backend) in a subprocess and
enter the given input. Uses a test config that disables the
paste detection.
Returns bpython's output.
"""
result = Deferred()
encoding = getpreferredencoding()
class Protocol(ProcessProtocol):
STATES = (SEND_INPUT, COLLECT) = range(2)
def __init__(self):
self.data = ""
self.delayed_call = None
self.states = iter(self.STATES)
self.state = next(self.states)
def outReceived(self, data):
self.data += data.decode(encoding)
if self.delayed_call is not None:
self.delayed_call.cancel()
self.delayed_call = reactor.callLater(0.5, self.next)
def next(self):
self.delayed_call = None
if self.state == self.SEND_INPUT:
index = self.data.find(">>> ")
if index >= 0:
self.data = self.data[index + 4 :]
self.transport.write(input.encode(encoding))
self.state = next(self.states)
else:
self.transport.closeStdin()
if self.transport.pid is not None:
self.delayed_call = None
self.transport.signalProcess("TERM")
def processExited(self, reason):
if self.delayed_call is not None:
self.delayed_call.cancel()
result.callback(self.data)
(master, slave) = pty.openpty()
set_win_size(slave, 25, 80)
reactor.spawnProcess(
Protocol(),
sys.executable,
(
sys.executable,
"-m",
"bpython." + self.backend,
"--config",
TEST_CONFIG,
),
env=dict(TERM="vt100", LANG=os.environ.get("LANG", "")),
usePTY=(master, slave, os.ttyname(slave)),
)
return result
@attr(speed="slow")
def test_issue108(self):
input = textwrap.dedent(
"""\
def spam():
u"y\\xe4y"
\b
spam("""
)
deferred = self.run_bpython(input)
return deferred.addCallback(self.check_no_traceback)
@attr(speed="slow")
def test_issue133(self):
input = textwrap.dedent(
"""\
def spam(a, (b, c)):
pass
\b
spam(1"""
)
return self.run_bpython(input).addCallback(self.check_no_traceback)
def check_no_traceback(self, data):
self.assertNotIn("Traceback", data)
@unittest.skipIf(reactor is None, "twisted is not available")
class CursesCrashersTest(TrialTestCase, CrashersTest):
backend = "cli"
@unittest.skipUnless(have_urwid, "urwid is required")
@unittest.skipIf(reactor is None, "twisted is not available")
class UrwidCrashersTest(TrialTestCase, CrashersTest):
backend = "urwid"
if __name__ == "__main__":
unittest.main()