def test_do_not_trace_non_deferred_returns():
"""
If a function returns a non-Deferred value, nothing happens. More
specifically, no function trace information is stored.
"""
t = Tracer()
t._trace(FakeFrame(), 'return', None)
assert not t._function_data
def test_do_not_trace_non_deferred_returns():
"""
If a function returns a non-Deferred value, nothing happens. More
specifically, no function trace information is stored.
"""
t = Tracer()
t._trace(FakeFrame(), 'return', None)
assert not t._function_data
def test_trace_deferred_return_initial_setup():
"""
If a function returns a Deferred, nothing happens until the Deferred
fires. More specifically, no function trace information is stored.
"""
t = Tracer()
d = defer.Deferred()
t._trace(_frame_spam, 'return', d)
assert not t._function_data
def test_do_not_trace_defer_module():
"""
If a function in twisted.internet.defer returns a Deferred, nothing
happens. More specifically, no function trace information is stored.
"""
t = Tracer()
t._trace(FakeFrame(globals={'__name__': 'twisted.internet.defer'}),
'return', defer.Deferred())
assert not t._function_data
def test_do_not_trace_generators():
"""
If a generator function returns a Deferred, nothing happens. More
specifically, no function trace information is stored.
"""
t = Tracer()
t._trace(FakeFrame(FakeCode(flags=inspect.CO_GENERATOR)), 'return',
defer.Deferred())
assert not t._function_data
def test_trace_deferred_return_initial_setup():
"""
If a function returns a Deferred, nothing happens until the Deferred
fires. More specifically, no function trace information is stored.
"""
t = Tracer()
d = defer.Deferred()
t._trace(_frame_spam, 'return', d)
assert not t._function_data
def test_do_not_trace_defer_module():
"""
If a function in twisted.internet.defer returns a Deferred, nothing
happens. More specifically, no function trace information is stored.
"""
t = Tracer()
t._trace(
FakeFrame(globals={'__name__': 'twisted.internet.defer'}),
'return', defer.Deferred())
assert not t._function_data
def test_do_not_trace_generators():
"""
If a generator function returns a Deferred, nothing happens. More
specifically, no function trace information is stored.
"""
t = Tracer()
t._trace(
FakeFrame(FakeCode(flags=inspect.CO_GENERATOR)),
'return', defer.Deferred())
assert not t._function_data
def test_tracer_wrapped_hook(fakesys):
"""
If a profile hook was set prior to calling Tracer's install method, it will
continue to be called by Tracer.
"""
calls = []
def tracer(frame, event, arg):
calls.append((frame, event, arg))
fakesys.tracer = tracer
t = Tracer()
t.install()
sentinel = object()
t._trace(sentinel, 'call', sentinel)
assert calls == [(sentinel, 'call', sentinel)]
def test_tracer_wrapped_hook(fakesys):
"""
If a profile hook was set prior to calling Tracer's install method, it will
continue to be called by Tracer.
"""
calls = []
def tracer(frame, event, arg):
calls.append((frame, event, arg))
fakesys.tracer = tracer
t = Tracer()
t.install()
sentinel = object()
t._trace(sentinel, 'call', sentinel)
assert calls == [(sentinel, 'call', sentinel)]
