diff options
Diffstat (limited to 'Lib/test/test_profile.py')
| -rwxr-xr-x[-rw-r--r--] | Lib/test/test_profile.py | 271 |
1 files changed, 157 insertions, 114 deletions
diff --git a/Lib/test/test_profile.py b/Lib/test/test_profile.py index 95ad8d2dbe..c8281c3436 100644..100755 --- a/Lib/test/test_profile.py +++ b/Lib/test/test_profile.py @@ -1,123 +1,166 @@ """Test suite for the profile module.""" -import profile, pstats, sys +import os +import sys +import pstats +import unittest +from StringIO import StringIO +from test.test_support import run_unittest -# 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 +import profile +from test.profilee import testfunc, timer + + +class ProfileTest(unittest.TestCase): + + profilerclass = profile.Profile + methodnames = ['print_stats', 'print_callers', 'print_callees'] + expected_output = {} + + @classmethod + def do_profiling(cls): + results = [] + prof = cls.profilerclass(timer, 0.001) + prof.runctx("testfunc()", globals(), locals()) + results.append(timer()) + for methodname in cls.methodnames: + s = StringIO() + stats = pstats.Stats(prof, stream=s) + stats.strip_dirs().sort_stats("stdname") + getattr(stats, methodname)() + results.append(s.getvalue()) + return results + + def test_cprofile(self): + results = self.do_profiling() + self.assertEqual(results[0], 43000) + for i, method in enumerate(self.methodnames): + self.assertEqual(results[i+1], self.expected_output[method], + "Stats.%s output for %s doesn't fit expectation!" % + (method, self.profilerclass.__name__)) + + +def regenerate_expected_output(filename, cls): + filename = filename.rstrip('co') + print 'Regenerating %s...' % filename + results = cls.do_profiling() + + newfile = [] + with open(filename, 'r') as f: + for line in f: + newfile.append(line) + if line[:6] == '#--cut': + break + + with open(filename, 'w') as f: + f.writelines(newfile) + for i, method in enumerate(cls.methodnames): + f.write('%s.expected_output[%r] = """\\\n%s"""\n' % ( + cls.__name__, method, results[i+1])) + f.write('\nif __name__ == "__main__":\n main()\n') -# IMPORTANT: this is an output test. *ALL* NUMBERS in the expected -# output are relevant. If you change the formatting of pstats, -# please don't just regenerate output/test_profile without checking -# very carefully that not a single number has changed. def test_main(): - global ticks - ticks = 42000 - prof = profile.Profile(timer) - prof.runctx("testfunc()", globals(), locals()) - assert ticks == 43000, ticks - st = pstats.Stats(prof) - st.strip_dirs().sort_stats('stdname').print_stats() - st.print_callees() - st.print_callers() - -def timer(): - return ticks*0.001 - -def testfunc(): - # 1 call - # 1000 ticks total: 270 ticks local, 730 ticks in subfunctions - global ticks - ticks += 99 - helper() # 300 - helper() # 300 - ticks += 171 - factorial(14) # 130 - -def factorial(n): - # 23 calls total - # 170 ticks total, 150 ticks local - # 3 primitive calls, 130, 20 and 20 ticks total - # including 116, 17, 17 ticks local - global ticks - if n > 0: - ticks += n - return mul(n, factorial(n-1)) + run_unittest(ProfileTest) + +def main(): + if '-r' not in sys.argv: + test_main() else: - ticks += 11 - return 1 - -def mul(a, b): - # 20 calls - # 1 tick, local - global ticks - ticks += 1 - return a * b - -def helper(): - # 2 calls - # 300 ticks total: 20 ticks local, 260 ticks in subfunctions - global ticks - ticks += 1 - helper1() # 30 - ticks += 2 - helper1() # 30 - ticks += 6 - helper2() # 50 - ticks += 3 - helper2() # 50 - ticks += 2 - helper2() # 50 - ticks += 5 - helper2_indirect() # 70 - ticks += 1 - -def helper1(): - # 4 calls - # 30 ticks total: 29 ticks local, 1 tick in subfunctions - global ticks - ticks += 10 - hasattr(C(), "foo") # 1 - ticks += 19 - lst = [] - lst.append(42) # 0 - sys.exc_info() # 0 - -def helper2_indirect(): - helper2() # 50 - factorial(3) # 20 - -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): # 0 - 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 + regenerate_expected_output(__file__, ProfileTest) + + +# Don't remove this comment. Everything below it is auto-generated. +#--cut-------------------------------------------------------------------------- +ProfileTest.expected_output['print_stats'] = """\ + 127 function calls (107 primitive calls) in 999.749 CPU seconds + + Ordered by: standard name + + ncalls tottime percall cumtime percall filename:lineno(function) + 4 -0.004 -0.001 -0.004 -0.001 :0(append) + 4 -0.004 -0.001 -0.004 -0.001 :0(exc_info) + 12 -0.024 -0.002 11.964 0.997 :0(hasattr) + 8 -0.008 -0.001 -0.008 -0.001 :0(range) + 1 0.000 0.000 0.000 0.000 :0(setprofile) + 1 -0.002 -0.002 999.751 999.751 <string>:1(<module>) + 0 0.000 0.000 profile:0(profiler) + 1 -0.002 -0.002 999.749 999.749 profile:0(testfunc()) + 28 27.972 0.999 27.972 0.999 profilee.py:110(__getattr__) + 1 269.996 269.996 999.753 999.753 profilee.py:25(testfunc) + 23/3 149.937 6.519 169.917 56.639 profilee.py:35(factorial) + 20 19.980 0.999 19.980 0.999 profilee.py:48(mul) + 2 39.986 19.993 599.814 299.907 profilee.py:55(helper) + 4 115.984 28.996 119.964 29.991 profilee.py:73(helper1) + 2 -0.006 -0.003 139.942 69.971 profilee.py:84(helper2_indirect) + 8 311.976 38.997 399.896 49.987 profilee.py:88(helper2) + 8 63.968 7.996 79.944 9.993 profilee.py:98(subhelper) + + +""" +ProfileTest.expected_output['print_callers'] = """\ + Ordered by: standard name + +Function was called by... +:0(append) <- profilee.py:73(helper1)(4) 119.964 +:0(exc_info) <- profilee.py:73(helper1)(4) 119.964 +:0(hasattr) <- profilee.py:73(helper1)(4) 119.964 + profilee.py:88(helper2)(8) 399.896 +:0(range) <- profilee.py:98(subhelper)(8) 79.944 +:0(setprofile) <- profile:0(testfunc())(1) 999.749 +<string>:1(<module>) <- profile:0(testfunc())(1) 999.749 +profile:0(profiler) <- +profile:0(testfunc()) <- profile:0(profiler)(1) 0.000 +profilee.py:110(__getattr__) <- :0(hasattr)(12) 11.964 + profilee.py:98(subhelper)(16) 79.944 +profilee.py:25(testfunc) <- <string>:1(<module>)(1) 999.751 +profilee.py:35(factorial) <- profilee.py:25(testfunc)(1) 999.753 + profilee.py:35(factorial)(20) 169.917 + profilee.py:84(helper2_indirect)(2) 139.942 +profilee.py:48(mul) <- profilee.py:35(factorial)(20) 169.917 +profilee.py:55(helper) <- profilee.py:25(testfunc)(2) 999.753 +profilee.py:73(helper1) <- profilee.py:55(helper)(4) 599.814 +profilee.py:84(helper2_indirect) <- profilee.py:55(helper)(2) 599.814 +profilee.py:88(helper2) <- profilee.py:55(helper)(6) 599.814 + profilee.py:84(helper2_indirect)(2) 139.942 +profilee.py:98(subhelper) <- profilee.py:88(helper2)(8) 399.896 + + +""" +ProfileTest.expected_output['print_callees'] = """\ + Ordered by: standard name + +Function called... +:0(append) -> +:0(exc_info) -> +:0(hasattr) -> profilee.py:110(__getattr__)(12) 27.972 +:0(range) -> +:0(setprofile) -> +<string>:1(<module>) -> profilee.py:25(testfunc)(1) 999.753 +profile:0(profiler) -> profile:0(testfunc())(1) 999.749 +profile:0(testfunc()) -> :0(setprofile)(1) 0.000 + <string>:1(<module>)(1) 999.751 +profilee.py:110(__getattr__) -> +profilee.py:25(testfunc) -> profilee.py:35(factorial)(1) 169.917 + profilee.py:55(helper)(2) 599.814 +profilee.py:35(factorial) -> profilee.py:35(factorial)(20) 169.917 + profilee.py:48(mul)(20) 19.980 +profilee.py:48(mul) -> +profilee.py:55(helper) -> profilee.py:73(helper1)(4) 119.964 + profilee.py:84(helper2_indirect)(2) 139.942 + profilee.py:88(helper2)(6) 399.896 +profilee.py:73(helper1) -> :0(append)(4) -0.004 + :0(exc_info)(4) -0.004 + :0(hasattr)(4) 11.964 +profilee.py:84(helper2_indirect) -> profilee.py:35(factorial)(2) 169.917 + profilee.py:88(helper2)(2) 399.896 +profilee.py:88(helper2) -> :0(hasattr)(8) 11.964 + profilee.py:98(subhelper)(8) 79.944 +profilee.py:98(subhelper) -> :0(range)(8) -0.008 + profilee.py:110(__getattr__)(16) 27.972 + + +""" if __name__ == "__main__": - test_main() + main() |