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import sys
from unittest import TestCase
from eventlet import debug
from eventlet.support import capture_stderr, six
from tests import LimitedTestCase, main
import eventlet
class TestSpew(TestCase):
def setUp(self):
self.orig_trace = sys.settrace
sys.settrace = self._settrace
self.tracer = None
def tearDown(self):
sys.settrace = self.orig_trace
sys.stdout = sys.__stdout__
def _settrace(self, cb):
self.tracer = cb
def test_spew(self):
debug.spew()
assert isinstance(self.tracer, debug.Spew)
def test_unspew(self):
debug.spew()
debug.unspew()
assert self.tracer is None
def test_line(self):
sys.stdout = six.StringIO()
s = debug.Spew()
f = sys._getframe()
s(f, "line", None)
lineno = f.f_lineno - 1 # -1 here since we called with frame f in the line above
output = sys.stdout.getvalue()
assert "%s:%i" % (__name__, lineno) in output, "Didn't find line %i in %s" % (lineno, output)
assert "f=<frame object at" in output
def test_line_nofile(self):
sys.stdout = six.StringIO()
s = debug.Spew()
g = globals().copy()
del g['__file__']
f = eval("sys._getframe()", g)
lineno = f.f_lineno
s(f, "line", None)
output = sys.stdout.getvalue()
assert "[unknown]:%i" % lineno in output, "Didn't find [unknown]:%i in %s" % (lineno, output)
assert "VM instruction #" in output, output
def test_line_global(self):
global GLOBAL_VAR
sys.stdout = six.StringIO()
GLOBAL_VAR = debug.Spew()
f = sys._getframe()
GLOBAL_VAR(f, "line", None)
lineno = f.f_lineno - 1 # -1 here since we called with frame f in the line above
output = sys.stdout.getvalue()
assert "%s:%i" % (__name__, lineno) in output, "Didn't find line %i in %s" % (lineno, output)
assert "f=<frame object at" in output
assert "GLOBAL_VAR" in f.f_globals
assert "GLOBAL_VAR=<eventlet.debug.Spew object at" in output
del GLOBAL_VAR
def test_line_novalue(self):
sys.stdout = six.StringIO()
s = debug.Spew(show_values=False)
f = sys._getframe()
s(f, "line", None)
lineno = f.f_lineno - 1 # -1 here since we called with frame f in the line above
output = sys.stdout.getvalue()
assert "%s:%i" % (__name__, lineno) in output, "Didn't find line %i in %s" % (lineno, output)
assert "f=<frame object at" not in output
def test_line_nooutput(self):
sys.stdout = six.StringIO()
s = debug.Spew(trace_names=['foo'])
f = sys._getframe()
s(f, "line", None)
output = sys.stdout.getvalue()
assert output == ""
class TestDebug(LimitedTestCase):
def test_everything(self):
debug.hub_exceptions(True)
debug.hub_exceptions(False)
debug.tpool_exceptions(True)
debug.tpool_exceptions(False)
debug.hub_listener_stacks(True)
debug.hub_listener_stacks(False)
debug.hub_timer_stacks(True)
debug.hub_timer_stacks(False)
debug.format_hub_listeners()
debug.format_hub_timers()
def test_hub_exceptions(self):
debug.hub_exceptions(True)
server = eventlet.listen(('0.0.0.0', 0))
client = eventlet.connect(('127.0.0.1', server.getsockname()[1]))
client_2, addr = server.accept()
def hurl(s):
s.recv(1)
{}[1] # keyerror
with capture_stderr() as fake:
gt = eventlet.spawn(hurl, client_2)
eventlet.sleep(0)
client.send(b' ')
eventlet.sleep(0)
# allow the "hurl" greenlet to trigger the KeyError
# not sure why the extra context switch is needed
eventlet.sleep(0)
self.assertRaises(KeyError, gt.wait)
debug.hub_exceptions(False)
# look for the KeyError exception in the traceback
assert 'KeyError: 1' in fake.getvalue(), "Traceback not in:\n" + fake.getvalue()
if __name__ == "__main__":
main()
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