| """Test suite for the cProfile module.""" | |
| import sys | |
| import unittest | |
| # rip off all interesting stuff from test_profile | |
| import cProfile | |
| from test.test_profile import ProfileTest, regenerate_expected_output | |
| from test.support.script_helper import assert_python_failure | |
| from test import support | |
| class CProfileTest(ProfileTest): | |
| profilerclass = cProfile.Profile | |
| profilermodule = cProfile | |
| expected_max_output = "{built-in method builtins.max}" | |
| def get_expected_output(self): | |
| return _ProfileOutput | |
| def test_bad_counter_during_dealloc(self): | |
| # bpo-3895 | |
| import _lsprof | |
| with support.catch_unraisable_exception() as cm: | |
| obj = _lsprof.Profiler(lambda: int) | |
| obj.enable() | |
| obj.disable() | |
| obj.clear() | |
| self.assertEqual(cm.unraisable.exc_type, TypeError) | |
| def test_crash_with_not_enough_args(self): | |
| # gh-126220 | |
| import _lsprof | |
| for profile in [_lsprof.Profiler(), cProfile.Profile()]: | |
| for method in [ | |
| "_pystart_callback", | |
| "_pyreturn_callback", | |
| "_ccall_callback", | |
| "_creturn_callback", | |
| ]: | |
| with self.subTest(profile=profile, method=method): | |
| method_obj = getattr(profile, method) | |
| with self.assertRaises(TypeError): | |
| method_obj() # should not crash | |
| def test_evil_external_timer(self): | |
| # gh-120289 | |
| # Disabling profiler in external timer should not crash | |
| import _lsprof | |
| class EvilTimer(): | |
| def __init__(self, disable_count): | |
| self.count = 0 | |
| self.disable_count = disable_count | |
| def __call__(self): | |
| self.count += 1 | |
| if self.count == self.disable_count: | |
| profiler_with_evil_timer.disable() | |
| return self.count | |
| # this will trigger external timer to disable profiler at | |
| # call event - in initContext in _lsprof.c | |
| with support.catch_unraisable_exception() as cm: | |
| profiler_with_evil_timer = _lsprof.Profiler(EvilTimer(1)) | |
| profiler_with_evil_timer.enable() | |
| # Make a call to trigger timer | |
| (lambda: None)() | |
| profiler_with_evil_timer.disable() | |
| profiler_with_evil_timer.clear() | |
| self.assertEqual(cm.unraisable.exc_type, RuntimeError) | |
| # this will trigger external timer to disable profiler at | |
| # return event - in Stop in _lsprof.c | |
| with support.catch_unraisable_exception() as cm: | |
| profiler_with_evil_timer = _lsprof.Profiler(EvilTimer(2)) | |
| profiler_with_evil_timer.enable() | |
| # Make a call to trigger timer | |
| (lambda: None)() | |
| profiler_with_evil_timer.disable() | |
| profiler_with_evil_timer.clear() | |
| self.assertEqual(cm.unraisable.exc_type, RuntimeError) | |
| def test_profile_enable_disable(self): | |
| prof = self.profilerclass() | |
| # Make sure we clean ourselves up if the test fails for some reason. | |
| self.addCleanup(prof.disable) | |
| prof.enable() | |
| self.assertEqual( | |
| sys.monitoring.get_tool(sys.monitoring.PROFILER_ID), "cProfile") | |
| prof.disable() | |
| self.assertIs(sys.monitoring.get_tool(sys.monitoring.PROFILER_ID), None) | |
| def test_profile_as_context_manager(self): | |
| prof = self.profilerclass() | |
| # Make sure we clean ourselves up if the test fails for some reason. | |
| self.addCleanup(prof.disable) | |
| with prof as __enter__return_value: | |
| # profile.__enter__ should return itself. | |
| self.assertIs(prof, __enter__return_value) | |
| # profile should be set as the global profiler inside the | |
| # with-block | |
| self.assertEqual( | |
| sys.monitoring.get_tool(sys.monitoring.PROFILER_ID), "cProfile") | |
| # profile shouldn't be set once we leave the with-block. | |
| self.assertIs(sys.monitoring.get_tool(sys.monitoring.PROFILER_ID), None) | |
| def test_second_profiler(self): | |
| pr = self.profilerclass() | |
| pr2 = self.profilerclass() | |
| pr.enable() | |
| self.assertRaises(ValueError, pr2.enable) | |
| pr.disable() | |
| def test_throw(self): | |
| """ | |
| gh-106152 | |
| generator.throw() should trigger a call in cProfile | |
| In the any() call below, there should be two entries for the generator: | |
| * one for the call to __next__ which gets a True and terminates any | |
| * one when the generator is garbage collected which will effectively | |
| do a throw. | |
| """ | |
| pr = self.profilerclass() | |
| pr.enable() | |
| any(a == 1 for a in (1, 2)) | |
| pr.disable() | |
| pr.create_stats() | |
| for func, (cc, nc, _, _, _) in pr.stats.items(): | |
| if func[2] == "<genexpr>": | |
| self.assertEqual(cc, 1) | |
| self.assertEqual(nc, 1) | |
| class TestCommandLine(unittest.TestCase): | |
| def test_sort(self): | |
| rc, out, err = assert_python_failure('-m', 'cProfile', '-s', 'demo') | |
| self.assertGreater(rc, 0) | |
| self.assertIn(b"option -s: invalid choice: 'demo'", err) | |
| def main(): | |
| if '-r' not in sys.argv: | |
| unittest.main() | |
| else: | |
| regenerate_expected_output(__file__, CProfileTest) | |
| # Don't remove this comment. Everything below it is auto-generated. | |
| #--cut-------------------------------------------------------------------------- | |
| _ProfileOutput = {} | |
| _ProfileOutput['print_stats'] = """\ | |
| 28 0.028 0.001 0.028 0.001 profilee.py:110(__getattr__) | |
| 1 0.270 0.270 1.000 1.000 profilee.py:25(testfunc) | |
| 23/3 0.150 0.007 0.170 0.057 profilee.py:35(factorial) | |
| 20 0.020 0.001 0.020 0.001 profilee.py:48(mul) | |
| 2 0.040 0.020 0.600 0.300 profilee.py:55(helper) | |
| 4 0.116 0.029 0.120 0.030 profilee.py:73(helper1) | |
| 2 0.000 0.000 0.140 0.070 profilee.py:84(helper2_indirect) | |
| 8 0.312 0.039 0.400 0.050 profilee.py:88(helper2) | |
| 8 0.064 0.008 0.080 0.010 profilee.py:98(subhelper)""" | |
| _ProfileOutput['print_callers'] = """\ | |
| profilee.py:110(__getattr__) <- 16 0.016 0.016 profilee.py:98(subhelper) | |
| profilee.py:25(testfunc) <- 1 0.270 1.000 <string>:1(<module>) | |
| profilee.py:35(factorial) <- 1 0.014 0.130 profilee.py:25(testfunc) | |
| 20/3 0.130 0.147 profilee.py:35(factorial) | |
| 2 0.006 0.040 profilee.py:84(helper2_indirect) | |
| profilee.py:48(mul) <- 20 0.020 0.020 profilee.py:35(factorial) | |
| profilee.py:55(helper) <- 2 0.040 0.600 profilee.py:25(testfunc) | |
| profilee.py:73(helper1) <- 4 0.116 0.120 profilee.py:55(helper) | |
| profilee.py:84(helper2_indirect) <- 2 0.000 0.140 profilee.py:55(helper) | |
| profilee.py:88(helper2) <- 6 0.234 0.300 profilee.py:55(helper) | |
| 2 0.078 0.100 profilee.py:84(helper2_indirect) | |
| profilee.py:98(subhelper) <- 8 0.064 0.080 profilee.py:88(helper2) | |
| {built-in method builtins.hasattr} <- 4 0.000 0.004 profilee.py:73(helper1) | |
| 8 0.000 0.008 profilee.py:88(helper2) | |
| {built-in method sys.exception} <- 4 0.000 0.000 profilee.py:73(helper1) | |
| {method 'append' of 'list' objects} <- 4 0.000 0.000 profilee.py:73(helper1)""" | |
| _ProfileOutput['print_callees'] = """\ | |
| <string>:1(<module>) -> 1 0.270 1.000 profilee.py:25(testfunc) | |
| profilee.py:110(__getattr__) -> | |
| profilee.py:25(testfunc) -> 1 0.014 0.130 profilee.py:35(factorial) | |
| 2 0.040 0.600 profilee.py:55(helper) | |
| profilee.py:35(factorial) -> 20/3 0.130 0.147 profilee.py:35(factorial) | |
| 20 0.020 0.020 profilee.py:48(mul) | |
| profilee.py:48(mul) -> | |
| profilee.py:55(helper) -> 4 0.116 0.120 profilee.py:73(helper1) | |
| 2 0.000 0.140 profilee.py:84(helper2_indirect) | |
| 6 0.234 0.300 profilee.py:88(helper2) | |
| profilee.py:73(helper1) -> 4 0.000 0.004 {built-in method builtins.hasattr} | |
| profilee.py:84(helper2_indirect) -> 2 0.006 0.040 profilee.py:35(factorial) | |
| 2 0.078 0.100 profilee.py:88(helper2) | |
| profilee.py:88(helper2) -> 8 0.064 0.080 profilee.py:98(subhelper) | |
| profilee.py:98(subhelper) -> 16 0.016 0.016 profilee.py:110(__getattr__) | |
| {built-in method builtins.hasattr} -> 12 0.012 0.012 profilee.py:110(__getattr__)""" | |
| if __name__ == "__main__": | |
| main() |