| """Test suite for the profile module.""" |
| |
| import sys |
| import pstats |
| import unittest |
| import os |
| from difflib import unified_diff |
| from io import StringIO |
| from test.support import TESTFN, run_unittest, unlink |
| from contextlib import contextmanager |
| |
| import profile |
| from test.profilee import testfunc, timer |
| |
| |
| class ProfileTest(unittest.TestCase): |
| |
| profilerclass = profile.Profile |
| profilermodule = profile |
| methodnames = ['print_stats', 'print_callers', 'print_callees'] |
| expected_max_output = ':0(max)' |
| |
| def tearDown(self): |
| unlink(TESTFN) |
| |
| def get_expected_output(self): |
| return _ProfileOutput |
| |
| @classmethod |
| def do_profiling(cls): |
| results = [] |
| prof = cls.profilerclass(timer, 0.001) |
| start_timer = timer() |
| prof.runctx("testfunc()", globals(), locals()) |
| results.append(timer() - start_timer) |
| for methodname in cls.methodnames: |
| s = StringIO() |
| stats = pstats.Stats(prof, stream=s) |
| stats.strip_dirs().sort_stats("stdname") |
| getattr(stats, methodname)() |
| output = s.getvalue().splitlines() |
| mod_name = testfunc.__module__.rsplit('.', 1)[1] |
| # Only compare against stats originating from the test file. |
| # Prevents outside code (e.g., the io module) from causing |
| # unexpected output. |
| output = [line.rstrip() for line in output if mod_name in line] |
| results.append('\n'.join(output)) |
| return results |
| |
| def test_cprofile(self): |
| results = self.do_profiling() |
| expected = self.get_expected_output() |
| self.assertEqual(results[0], 1000) |
| for i, method in enumerate(self.methodnames): |
| if results[i+1] != expected[method]: |
| print("Stats.%s output for %s doesn't fit expectation!" % |
| (method, self.profilerclass.__name__)) |
| print('\n'.join(unified_diff( |
| results[i+1].split('\n'), |
| expected[method].split('\n')))) |
| |
| def test_calling_conventions(self): |
| # Issue #5330: profile and cProfile wouldn't report C functions called |
| # with keyword arguments. We test all calling conventions. |
| stmts = [ |
| "max([0])", |
| "max([0], key=int)", |
| "max([0], **dict(key=int))", |
| "max(*([0],))", |
| "max(*([0],), key=int)", |
| "max(*([0],), **dict(key=int))", |
| ] |
| for stmt in stmts: |
| s = StringIO() |
| prof = self.profilerclass(timer, 0.001) |
| prof.runctx(stmt, globals(), locals()) |
| stats = pstats.Stats(prof, stream=s) |
| stats.print_stats() |
| res = s.getvalue() |
| self.assertIn(self.expected_max_output, res, |
| "Profiling {0!r} didn't report max:\n{1}".format(stmt, res)) |
| |
| def test_run(self): |
| with silent(): |
| self.profilermodule.run("int('1')") |
| self.profilermodule.run("int('1')", filename=TESTFN) |
| self.assertTrue(os.path.exists(TESTFN)) |
| |
| def test_runctx(self): |
| with silent(): |
| self.profilermodule.runctx("testfunc()", globals(), locals()) |
| self.profilermodule.runctx("testfunc()", globals(), locals(), |
| filename=TESTFN) |
| self.assertTrue(os.path.exists(TESTFN)) |
| |
| |
| 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.startswith('#--cut'): |
| break |
| |
| with open(filename, 'w') as f: |
| f.writelines(newfile) |
| f.write("_ProfileOutput = {}\n") |
| for i, method in enumerate(cls.methodnames): |
| f.write('_ProfileOutput[%r] = """\\\n%s"""\n' % ( |
| method, results[i+1])) |
| f.write('\nif __name__ == "__main__":\n main()\n') |
| |
| @contextmanager |
| def silent(): |
| stdout = sys.stdout |
| try: |
| sys.stdout = StringIO() |
| yield |
| finally: |
| sys.stdout = stdout |
| |
| def test_main(): |
| run_unittest(ProfileTest) |
| |
| def main(): |
| if '-r' not in sys.argv: |
| test_main() |
| else: |
| regenerate_expected_output(__file__, ProfileTest) |
| |
| |
| # Don't remove this comment. Everything below it is auto-generated. |
| #--cut-------------------------------------------------------------------------- |
| _ProfileOutput = {} |
| _ProfileOutput['print_stats'] = """\ |
| 28 27.972 0.999 27.972 0.999 profilee.py:110(__getattr__) |
| 1 269.996 269.996 999.769 999.769 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 19.993 599.830 299.915 profilee.py:55(helper) |
| 4 115.984 28.996 119.964 29.991 profilee.py:73(helper1) |
| 2 -0.006 -0.003 139.946 69.973 profilee.py:84(helper2_indirect) |
| 8 311.976 38.997 399.912 49.989 profilee.py:88(helper2) |
| 8 63.976 7.997 79.960 9.995 profilee.py:98(subhelper)""" |
| _ProfileOutput['print_callers'] = """\ |
| :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) 399.912 |
| profilee.py:110(__getattr__) <- :0(hasattr)(12) 11.964 |
| profilee.py:98(subhelper)(16) 79.960 |
| profilee.py:25(testfunc) <- <string>:1(<module>)(1) 999.767 |
| profilee.py:35(factorial) <- profilee.py:25(testfunc)(1) 999.769 |
| profilee.py:35(factorial)(20) 169.917 |
| profilee.py:84(helper2_indirect)(2) 139.946 |
| profilee.py:48(mul) <- profilee.py:35(factorial)(20) 169.917 |
| profilee.py:55(helper) <- profilee.py:25(testfunc)(2) 999.769 |
| profilee.py:73(helper1) <- profilee.py:55(helper)(4) 599.830 |
| profilee.py:84(helper2_indirect) <- profilee.py:55(helper)(2) 599.830 |
| profilee.py:88(helper2) <- profilee.py:55(helper)(6) 599.830 |
| profilee.py:84(helper2_indirect)(2) 139.946 |
| profilee.py:98(subhelper) <- profilee.py:88(helper2)(8) 399.912""" |
| _ProfileOutput['print_callees'] = """\ |
| :0(hasattr) -> profilee.py:110(__getattr__)(12) 27.972 |
| <string>:1(<module>) -> profilee.py:25(testfunc)(1) 999.769 |
| profilee.py:110(__getattr__) -> |
| profilee.py:25(testfunc) -> profilee.py:35(factorial)(1) 169.917 |
| profilee.py:55(helper)(2) 599.830 |
| 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) 139.946 |
| profilee.py:88(helper2)(6) 399.912 |
| profilee.py:73(helper1) -> :0(append)(4) -0.004 |
| profilee.py:84(helper2_indirect) -> profilee.py:35(factorial)(2) 169.917 |
| profilee.py:88(helper2)(2) 399.912 |
| profilee.py:88(helper2) -> :0(hasattr)(8) 11.964 |
| profilee.py:98(subhelper)(8) 79.960 |
| profilee.py:98(subhelper) -> profilee.py:110(__getattr__)(16) 27.972""" |
| |
| if __name__ == "__main__": |
| main() |