def test_tracer_calltree_output():
"""
Tracer's write_data method writes out calltree-formatted information.
"""
clock = task.Clock()
t = Tracer(reactor=clock)
_trace_deferred_firing_after(clock, t, _frame_spam, 0.5)
_trace_deferred_firing_after(clock, t, _frame_spam, 0.25)
_trace_deferred_firing_after(clock, t, _frame_eggs, 0.125)
sio = StringIO()
t.write_data(sio)
assert sio.getvalue() == textwrap.dedent("""\
events: Nanoseconds
fn=eggs eggs.py
0 125000
fn=spam spam.py
0 750000
cfn=eggs eggs.py
calls=1 0
0 125000
""")
def test_tracer_calltree_output():
"""
Tracer's write_data method writes out calltree-formatted information.
"""
clock = task.Clock()
t = Tracer(reactor=clock)
_trace_deferred_firing_after(clock, t, _frame_spam, 0.5)
_trace_deferred_firing_after(clock, t, _frame_spam, 0.25)
_trace_deferred_firing_after(clock, t, _frame_eggs, 0.125)
sio = StringIO()
t.write_data(sio)
assert sio.getvalue() == textwrap.dedent("""\
events: Nanoseconds
fn=eggs eggs.py
0 125000
fn=spam spam.py
0 750000
cfn=eggs eggs.py
calls=1 0
0 125000
""")
