Viewing file:  test_profile.py (2.76 KB) -rw-r--r--
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"""Test suite for the profile module."""
import profile
import os
from test.test_support import TESTFN, vereq
# In order to have reproducible time, we simulate a timer in the global
# variable 'ticks', which represents simulated time in milliseconds.
# (We can't use a helper function increment the timer since it would be
# included in the profile and would appear to consume all the time.)
ticks = 0
def test_1():
global ticks
ticks = 0
prof = profile.Profile(timer)
prof.runctx("testfunc()", globals(), globals())
prof.print_stats()
def timer():
return ticks*0.001
def testfunc():
# 1 call
# 1000 ticks total: 400 ticks local, 600 ticks in subfunctions
global ticks
ticks += 199
helper() # 300
helper() # 300
ticks += 201
def helper():
# 2 calls
# 300 ticks total: 40 ticks local, 260 ticks in subfunctions
global ticks
ticks += 1
helper1() # 30
ticks += 3
helper1() # 30
ticks += 6
helper2() # 50
ticks += 5
helper2() # 50
ticks += 4
helper2() # 50
ticks += 7
helper2() # 50
ticks += 14
def helper1():
# 4 calls
# 30 ticks total: 29 ticks local, 1 tick in subfunctions
global ticks
ticks += 10
hasattr(C(), "foo")
ticks += 19
def helper2():
# 8 calls
# 50 ticks local: 39 ticks local, 11 ticks in subfunctions
global ticks
ticks += 11
hasattr(C(), "bar") # 1
ticks += 13
subhelper() # 10
ticks += 15
def subhelper():
# 8 calls
# 10 ticks total: 8 ticks local, 2 ticks in subfunctions
global ticks
ticks += 2
for i in range(2):
try:
C().foo # 1 x 2
except AttributeError:
ticks += 3 # 3 x 2
class C:
def __getattr__(self, name):
# 28 calls
# 1 tick, local
global ticks
ticks += 1
raise AttributeError
def test_2():
d = globals().copy()
def testfunc():
global x
x = 1
d['testfunc'] = testfunc
profile.runctx("testfunc()", d, d, TESTFN)
vereq (x, 1)
os.unlink (TESTFN)
def test_3():
result = []
def testfunc1():
try: len(None)
except: pass
try: len(None)
except: pass
result.append(True)
def testfunc2():
testfunc1()
testfunc1()
profile.runctx("testfunc2()", locals(), locals(), TESTFN)
vereq(result, [True, True])
os.unlink(TESTFN)
def test_main():
test_1()
test_2()
test_3()
if __name__ == "__main__":
test_main()
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