mirror of
https://github.com/python/cpython.git
synced 2024-12-26 10:14:58 +08:00
979 lines
36 KiB
Python
979 lines
36 KiB
Python
import unittest, test.support
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import sys, io, os
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import struct
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import subprocess
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import textwrap
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import warnings
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import operator
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import codecs
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import gc
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import sysconfig
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# count the number of test runs, used to create unique
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# strings to intern in test_intern()
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numruns = 0
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try:
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import threading
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except ImportError:
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threading = None
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class SysModuleTest(unittest.TestCase):
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def setUp(self):
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self.orig_stdout = sys.stdout
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self.orig_stderr = sys.stderr
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self.orig_displayhook = sys.displayhook
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def tearDown(self):
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sys.stdout = self.orig_stdout
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sys.stderr = self.orig_stderr
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sys.displayhook = self.orig_displayhook
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test.support.reap_children()
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def test_original_displayhook(self):
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import builtins
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out = io.StringIO()
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sys.stdout = out
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dh = sys.__displayhook__
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self.assertRaises(TypeError, dh)
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if hasattr(builtins, "_"):
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del builtins._
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dh(None)
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self.assertEqual(out.getvalue(), "")
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self.assertTrue(not hasattr(builtins, "_"))
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dh(42)
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self.assertEqual(out.getvalue(), "42\n")
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self.assertEqual(builtins._, 42)
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del sys.stdout
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self.assertRaises(RuntimeError, dh, 42)
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def test_lost_displayhook(self):
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del sys.displayhook
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code = compile("42", "<string>", "single")
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self.assertRaises(RuntimeError, eval, code)
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def test_custom_displayhook(self):
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def baddisplayhook(obj):
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raise ValueError
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sys.displayhook = baddisplayhook
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code = compile("42", "<string>", "single")
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self.assertRaises(ValueError, eval, code)
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def test_original_excepthook(self):
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err = io.StringIO()
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sys.stderr = err
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eh = sys.__excepthook__
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self.assertRaises(TypeError, eh)
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try:
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raise ValueError(42)
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except ValueError as exc:
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eh(*sys.exc_info())
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self.assertTrue(err.getvalue().endswith("ValueError: 42\n"))
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def test_excepthook(self):
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with test.support.captured_output("stderr") as stderr:
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sys.excepthook(1, '1', 1)
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self.assertTrue("TypeError: print_exception(): Exception expected for " \
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"value, str found" in stderr.getvalue())
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# FIXME: testing the code for a lost or replaced excepthook in
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# Python/pythonrun.c::PyErr_PrintEx() is tricky.
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def test_exit(self):
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self.assertRaises(TypeError, sys.exit, 42, 42)
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# call without argument
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try:
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sys.exit(0)
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except SystemExit as exc:
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self.assertEqual(exc.code, 0)
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except:
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self.fail("wrong exception")
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else:
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self.fail("no exception")
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# call with tuple argument with one entry
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# entry will be unpacked
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try:
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sys.exit(42)
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except SystemExit as exc:
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self.assertEqual(exc.code, 42)
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except:
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self.fail("wrong exception")
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else:
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self.fail("no exception")
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# call with integer argument
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try:
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sys.exit((42,))
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except SystemExit as exc:
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self.assertEqual(exc.code, 42)
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except:
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self.fail("wrong exception")
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else:
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self.fail("no exception")
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# call with string argument
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try:
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sys.exit("exit")
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except SystemExit as exc:
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self.assertEqual(exc.code, "exit")
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except:
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self.fail("wrong exception")
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else:
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self.fail("no exception")
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# call with tuple argument with two entries
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try:
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sys.exit((17, 23))
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except SystemExit as exc:
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self.assertEqual(exc.code, (17, 23))
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except:
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self.fail("wrong exception")
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else:
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self.fail("no exception")
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# test that the exit machinery handles SystemExits properly
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rc = subprocess.call([sys.executable, "-c",
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"raise SystemExit(47)"])
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self.assertEqual(rc, 47)
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def check_exit_message(code, expected, env=None):
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process = subprocess.Popen([sys.executable, "-c", code],
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stderr=subprocess.PIPE, env=env)
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stdout, stderr = process.communicate()
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self.assertEqual(process.returncode, 1)
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self.assertTrue(stderr.startswith(expected),
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"%s doesn't start with %s" % (ascii(stderr), ascii(expected)))
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# test that stderr buffer if flushed before the exit message is written
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# into stderr
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check_exit_message(
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r'import sys; sys.stderr.write("unflushed,"); sys.exit("message")',
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b"unflushed,message")
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# test that the exit message is written with backslashreplace error
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# handler to stderr
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check_exit_message(
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r'import sys; sys.exit("surrogates:\uDCFF")',
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b"surrogates:\\udcff")
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# test that the unicode message is encoded to the stderr encoding
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# instead of the default encoding (utf8)
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env = os.environ.copy()
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env['PYTHONIOENCODING'] = 'latin-1'
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check_exit_message(
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r'import sys; sys.exit("h\xe9")',
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b"h\xe9", env=env)
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def test_getdefaultencoding(self):
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self.assertRaises(TypeError, sys.getdefaultencoding, 42)
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# can't check more than the type, as the user might have changed it
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self.assertIsInstance(sys.getdefaultencoding(), str)
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# testing sys.settrace() is done in test_sys_settrace.py
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# testing sys.setprofile() is done in test_sys_setprofile.py
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def test_setcheckinterval(self):
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with warnings.catch_warnings():
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warnings.simplefilter("ignore")
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self.assertRaises(TypeError, sys.setcheckinterval)
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orig = sys.getcheckinterval()
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for n in 0, 100, 120, orig: # orig last to restore starting state
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sys.setcheckinterval(n)
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self.assertEqual(sys.getcheckinterval(), n)
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@unittest.skipUnless(threading, 'Threading required for this test.')
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def test_switchinterval(self):
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self.assertRaises(TypeError, sys.setswitchinterval)
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self.assertRaises(TypeError, sys.setswitchinterval, "a")
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self.assertRaises(ValueError, sys.setswitchinterval, -1.0)
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self.assertRaises(ValueError, sys.setswitchinterval, 0.0)
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orig = sys.getswitchinterval()
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# sanity check
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self.assertTrue(orig < 0.5, orig)
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try:
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for n in 0.00001, 0.05, 3.0, orig:
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sys.setswitchinterval(n)
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self.assertAlmostEqual(sys.getswitchinterval(), n)
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finally:
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sys.setswitchinterval(orig)
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def test_recursionlimit(self):
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self.assertRaises(TypeError, sys.getrecursionlimit, 42)
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oldlimit = sys.getrecursionlimit()
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self.assertRaises(TypeError, sys.setrecursionlimit)
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self.assertRaises(ValueError, sys.setrecursionlimit, -42)
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sys.setrecursionlimit(10000)
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self.assertEqual(sys.getrecursionlimit(), 10000)
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sys.setrecursionlimit(oldlimit)
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@unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
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'fatal error if run with a trace function')
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def test_recursionlimit_recovery(self):
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# NOTE: this test is slightly fragile in that it depends on the current
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# recursion count when executing the test being low enough so as to
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# trigger the recursion recovery detection in the _Py_MakeEndRecCheck
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# macro (see ceval.h).
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oldlimit = sys.getrecursionlimit()
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def f():
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f()
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try:
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for i in (50, 1000):
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# Issue #5392: stack overflow after hitting recursion limit twice
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sys.setrecursionlimit(i)
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self.assertRaises(RuntimeError, f)
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self.assertRaises(RuntimeError, f)
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finally:
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sys.setrecursionlimit(oldlimit)
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def test_recursionlimit_fatalerror(self):
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# A fatal error occurs if a second recursion limit is hit when recovering
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# from a first one.
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code = textwrap.dedent("""
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import sys
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def f():
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try:
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f()
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except RuntimeError:
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f()
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sys.setrecursionlimit(%d)
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f()""")
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with test.support.SuppressCrashReport():
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for i in (50, 1000):
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sub = subprocess.Popen([sys.executable, '-c', code % i],
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stderr=subprocess.PIPE)
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err = sub.communicate()[1]
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self.assertTrue(sub.returncode, sub.returncode)
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self.assertIn(
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b"Fatal Python error: Cannot recover from stack overflow",
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err)
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def test_getwindowsversion(self):
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# Raise SkipTest if sys doesn't have getwindowsversion attribute
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test.support.get_attribute(sys, "getwindowsversion")
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v = sys.getwindowsversion()
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self.assertEqual(len(v), 5)
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self.assertIsInstance(v[0], int)
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self.assertIsInstance(v[1], int)
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self.assertIsInstance(v[2], int)
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self.assertIsInstance(v[3], int)
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self.assertIsInstance(v[4], str)
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self.assertRaises(IndexError, operator.getitem, v, 5)
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self.assertIsInstance(v.major, int)
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self.assertIsInstance(v.minor, int)
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self.assertIsInstance(v.build, int)
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self.assertIsInstance(v.platform, int)
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self.assertIsInstance(v.service_pack, str)
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self.assertIsInstance(v.service_pack_minor, int)
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self.assertIsInstance(v.service_pack_major, int)
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self.assertIsInstance(v.suite_mask, int)
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self.assertIsInstance(v.product_type, int)
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self.assertEqual(v[0], v.major)
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self.assertEqual(v[1], v.minor)
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self.assertEqual(v[2], v.build)
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self.assertEqual(v[3], v.platform)
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self.assertEqual(v[4], v.service_pack)
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# This is how platform.py calls it. Make sure tuple
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# still has 5 elements
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maj, min, buildno, plat, csd = sys.getwindowsversion()
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def test_call_tracing(self):
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self.assertRaises(TypeError, sys.call_tracing, type, 2)
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def test_dlopenflags(self):
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if hasattr(sys, "setdlopenflags"):
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self.assertTrue(hasattr(sys, "getdlopenflags"))
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self.assertRaises(TypeError, sys.getdlopenflags, 42)
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oldflags = sys.getdlopenflags()
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self.assertRaises(TypeError, sys.setdlopenflags)
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sys.setdlopenflags(oldflags+1)
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self.assertEqual(sys.getdlopenflags(), oldflags+1)
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sys.setdlopenflags(oldflags)
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@test.support.refcount_test
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def test_refcount(self):
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# n here must be a global in order for this test to pass while
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# tracing with a python function. Tracing calls PyFrame_FastToLocals
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# which will add a copy of any locals to the frame object, causing
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# the reference count to increase by 2 instead of 1.
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global n
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self.assertRaises(TypeError, sys.getrefcount)
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c = sys.getrefcount(None)
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n = None
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self.assertEqual(sys.getrefcount(None), c+1)
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del n
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self.assertEqual(sys.getrefcount(None), c)
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if hasattr(sys, "gettotalrefcount"):
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self.assertIsInstance(sys.gettotalrefcount(), int)
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def test_getframe(self):
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self.assertRaises(TypeError, sys._getframe, 42, 42)
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self.assertRaises(ValueError, sys._getframe, 2000000000)
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self.assertTrue(
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SysModuleTest.test_getframe.__code__ \
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is sys._getframe().f_code
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)
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# sys._current_frames() is a CPython-only gimmick.
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def test_current_frames(self):
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have_threads = True
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try:
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import _thread
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except ImportError:
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have_threads = False
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if have_threads:
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self.current_frames_with_threads()
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else:
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self.current_frames_without_threads()
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# Test sys._current_frames() in a WITH_THREADS build.
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@test.support.reap_threads
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def current_frames_with_threads(self):
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import threading
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import traceback
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# Spawn a thread that blocks at a known place. Then the main
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# thread does sys._current_frames(), and verifies that the frames
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# returned make sense.
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entered_g = threading.Event()
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leave_g = threading.Event()
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thread_info = [] # the thread's id
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def f123():
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g456()
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def g456():
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thread_info.append(threading.get_ident())
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entered_g.set()
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leave_g.wait()
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t = threading.Thread(target=f123)
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t.start()
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entered_g.wait()
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# At this point, t has finished its entered_g.set(), although it's
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# impossible to guess whether it's still on that line or has moved on
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# to its leave_g.wait().
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self.assertEqual(len(thread_info), 1)
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thread_id = thread_info[0]
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d = sys._current_frames()
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main_id = threading.get_ident()
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self.assertIn(main_id, d)
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self.assertIn(thread_id, d)
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# Verify that the captured main-thread frame is _this_ frame.
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frame = d.pop(main_id)
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self.assertTrue(frame is sys._getframe())
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# Verify that the captured thread frame is blocked in g456, called
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# from f123. This is a litte tricky, since various bits of
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# threading.py are also in the thread's call stack.
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frame = d.pop(thread_id)
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stack = traceback.extract_stack(frame)
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for i, (filename, lineno, funcname, sourceline) in enumerate(stack):
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if funcname == "f123":
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break
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else:
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self.fail("didn't find f123() on thread's call stack")
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self.assertEqual(sourceline, "g456()")
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# And the next record must be for g456().
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filename, lineno, funcname, sourceline = stack[i+1]
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self.assertEqual(funcname, "g456")
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self.assertIn(sourceline, ["leave_g.wait()", "entered_g.set()"])
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# Reap the spawned thread.
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leave_g.set()
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t.join()
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# Test sys._current_frames() when thread support doesn't exist.
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def current_frames_without_threads(self):
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# Not much happens here: there is only one thread, with artificial
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# "thread id" 0.
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d = sys._current_frames()
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self.assertEqual(len(d), 1)
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self.assertIn(0, d)
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self.assertTrue(d[0] is sys._getframe())
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def test_attributes(self):
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self.assertIsInstance(sys.api_version, int)
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self.assertIsInstance(sys.argv, list)
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self.assertIn(sys.byteorder, ("little", "big"))
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self.assertIsInstance(sys.builtin_module_names, tuple)
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self.assertIsInstance(sys.copyright, str)
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self.assertIsInstance(sys.exec_prefix, str)
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self.assertIsInstance(sys.base_exec_prefix, str)
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self.assertIsInstance(sys.executable, str)
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self.assertEqual(len(sys.float_info), 11)
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self.assertEqual(sys.float_info.radix, 2)
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self.assertEqual(len(sys.int_info), 2)
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self.assertTrue(sys.int_info.bits_per_digit % 5 == 0)
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self.assertTrue(sys.int_info.sizeof_digit >= 1)
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self.assertEqual(type(sys.int_info.bits_per_digit), int)
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self.assertEqual(type(sys.int_info.sizeof_digit), int)
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self.assertIsInstance(sys.hexversion, int)
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self.assertEqual(len(sys.hash_info), 5)
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self.assertLess(sys.hash_info.modulus, 2**sys.hash_info.width)
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# sys.hash_info.modulus should be a prime; we do a quick
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# probable primality test (doesn't exclude the possibility of
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# a Carmichael number)
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for x in range(1, 100):
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self.assertEqual(
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pow(x, sys.hash_info.modulus-1, sys.hash_info.modulus),
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1,
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"sys.hash_info.modulus {} is a non-prime".format(
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sys.hash_info.modulus)
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)
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self.assertIsInstance(sys.hash_info.inf, int)
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self.assertIsInstance(sys.hash_info.nan, int)
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self.assertIsInstance(sys.hash_info.imag, int)
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self.assertIsInstance(sys.maxsize, int)
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self.assertIsInstance(sys.maxunicode, int)
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self.assertEqual(sys.maxunicode, 0x10FFFF)
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self.assertIsInstance(sys.platform, str)
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self.assertIsInstance(sys.prefix, str)
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self.assertIsInstance(sys.base_prefix, str)
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self.assertIsInstance(sys.version, str)
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vi = sys.version_info
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self.assertIsInstance(vi[:], tuple)
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self.assertEqual(len(vi), 5)
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self.assertIsInstance(vi[0], int)
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self.assertIsInstance(vi[1], int)
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self.assertIsInstance(vi[2], int)
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self.assertIn(vi[3], ("alpha", "beta", "candidate", "final"))
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self.assertIsInstance(vi[4], int)
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self.assertIsInstance(vi.major, int)
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self.assertIsInstance(vi.minor, int)
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self.assertIsInstance(vi.micro, int)
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self.assertIn(vi.releaselevel, ("alpha", "beta", "candidate", "final"))
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self.assertIsInstance(vi.serial, int)
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self.assertEqual(vi[0], vi.major)
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self.assertEqual(vi[1], vi.minor)
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self.assertEqual(vi[2], vi.micro)
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self.assertEqual(vi[3], vi.releaselevel)
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self.assertEqual(vi[4], vi.serial)
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self.assertTrue(vi > (1,0,0))
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self.assertIsInstance(sys.float_repr_style, str)
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self.assertIn(sys.float_repr_style, ('short', 'legacy'))
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if not sys.platform.startswith('win'):
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self.assertIsInstance(sys.abiflags, str)
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|
|
@unittest.skipUnless(hasattr(sys, 'thread_info'),
|
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'Threading required for this test.')
|
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def test_thread_info(self):
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info = sys.thread_info
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self.assertEqual(len(info), 3)
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self.assertIn(info.name, ('nt', 'pthread', 'solaris', None))
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self.assertIn(info.lock, ('semaphore', 'mutex+cond', None))
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|
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def test_43581(self):
|
|
# Can't use sys.stdout, as this is a StringIO object when
|
|
# the test runs under regrtest.
|
|
self.assertEqual(sys.__stdout__.encoding, sys.__stderr__.encoding)
|
|
|
|
def test_intern(self):
|
|
global numruns
|
|
numruns += 1
|
|
self.assertRaises(TypeError, sys.intern)
|
|
s = "never interned before" + str(numruns)
|
|
self.assertTrue(sys.intern(s) is s)
|
|
s2 = s.swapcase().swapcase()
|
|
self.assertTrue(sys.intern(s2) is s)
|
|
|
|
# Subclasses of string can't be interned, because they
|
|
# provide too much opportunity for insane things to happen.
|
|
# We don't want them in the interned dict and if they aren't
|
|
# actually interned, we don't want to create the appearance
|
|
# that they are by allowing intern() to succeed.
|
|
class S(str):
|
|
def __hash__(self):
|
|
return 123
|
|
|
|
self.assertRaises(TypeError, sys.intern, S("abc"))
|
|
|
|
def test_sys_flags(self):
|
|
self.assertTrue(sys.flags)
|
|
attrs = ("debug",
|
|
"inspect", "interactive", "optimize", "dont_write_bytecode",
|
|
"no_user_site", "no_site", "ignore_environment", "verbose",
|
|
"bytes_warning", "quiet", "hash_randomization", "isolated")
|
|
for attr in attrs:
|
|
self.assertTrue(hasattr(sys.flags, attr), attr)
|
|
self.assertEqual(type(getattr(sys.flags, attr)), int, attr)
|
|
self.assertTrue(repr(sys.flags))
|
|
self.assertEqual(len(sys.flags), len(attrs))
|
|
|
|
def test_clear_type_cache(self):
|
|
sys._clear_type_cache()
|
|
|
|
def test_ioencoding(self):
|
|
env = dict(os.environ)
|
|
|
|
# Test character: cent sign, encoded as 0x4A (ASCII J) in CP424,
|
|
# not representable in ASCII.
|
|
|
|
env["PYTHONIOENCODING"] = "cp424"
|
|
p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'],
|
|
stdout = subprocess.PIPE, env=env)
|
|
out = p.communicate()[0].strip()
|
|
expected = ("\xa2" + os.linesep).encode("cp424")
|
|
self.assertEqual(out, expected)
|
|
|
|
env["PYTHONIOENCODING"] = "ascii:replace"
|
|
p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'],
|
|
stdout = subprocess.PIPE, env=env)
|
|
out = p.communicate()[0].strip()
|
|
self.assertEqual(out, b'?')
|
|
|
|
env["PYTHONIOENCODING"] = "ascii"
|
|
p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'],
|
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
|
|
env=env)
|
|
out, err = p.communicate()
|
|
self.assertEqual(out, b'')
|
|
self.assertIn(b'UnicodeEncodeError:', err)
|
|
self.assertIn(rb"'\xa2'", err)
|
|
|
|
env["PYTHONIOENCODING"] = "ascii:"
|
|
p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'],
|
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
|
|
env=env)
|
|
out, err = p.communicate()
|
|
self.assertEqual(out, b'')
|
|
self.assertIn(b'UnicodeEncodeError:', err)
|
|
self.assertIn(rb"'\xa2'", err)
|
|
|
|
env["PYTHONIOENCODING"] = ":surrogateescape"
|
|
p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xdcbd))'],
|
|
stdout=subprocess.PIPE, env=env)
|
|
out = p.communicate()[0].strip()
|
|
self.assertEqual(out, b'\xbd')
|
|
|
|
@unittest.skipUnless(test.support.FS_NONASCII,
|
|
'requires OS support of non-ASCII encodings')
|
|
def test_ioencoding_nonascii(self):
|
|
env = dict(os.environ)
|
|
|
|
env["PYTHONIOENCODING"] = ""
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'print(%a)' % test.support.FS_NONASCII],
|
|
stdout=subprocess.PIPE, env=env)
|
|
out = p.communicate()[0].strip()
|
|
self.assertEqual(out, os.fsencode(test.support.FS_NONASCII))
|
|
|
|
@unittest.skipIf(sys.base_prefix != sys.prefix,
|
|
'Test is not venv-compatible')
|
|
def test_executable(self):
|
|
# sys.executable should be absolute
|
|
self.assertEqual(os.path.abspath(sys.executable), sys.executable)
|
|
|
|
# Issue #7774: Ensure that sys.executable is an empty string if argv[0]
|
|
# has been set to an non existent program name and Python is unable to
|
|
# retrieve the real program name
|
|
|
|
# For a normal installation, it should work without 'cwd'
|
|
# argument. For test runs in the build directory, see #7774.
|
|
python_dir = os.path.dirname(os.path.realpath(sys.executable))
|
|
p = subprocess.Popen(
|
|
["nonexistent", "-c",
|
|
'import sys; print(sys.executable.encode("ascii", "backslashreplace"))'],
|
|
executable=sys.executable, stdout=subprocess.PIPE, cwd=python_dir)
|
|
stdout = p.communicate()[0]
|
|
executable = stdout.strip().decode("ASCII")
|
|
p.wait()
|
|
self.assertIn(executable, ["b''", repr(sys.executable.encode("ascii", "backslashreplace"))])
|
|
|
|
def check_fsencoding(self, fs_encoding, expected=None):
|
|
self.assertIsNotNone(fs_encoding)
|
|
codecs.lookup(fs_encoding)
|
|
if expected:
|
|
self.assertEqual(fs_encoding, expected)
|
|
|
|
def test_getfilesystemencoding(self):
|
|
fs_encoding = sys.getfilesystemencoding()
|
|
if sys.platform == 'darwin':
|
|
expected = 'utf-8'
|
|
elif sys.platform == 'win32':
|
|
expected = 'mbcs'
|
|
else:
|
|
expected = None
|
|
self.check_fsencoding(fs_encoding, expected)
|
|
|
|
def test_implementation(self):
|
|
# This test applies to all implementations equally.
|
|
|
|
levels = {'alpha': 0xA, 'beta': 0xB, 'candidate': 0xC, 'final': 0xF}
|
|
|
|
self.assertTrue(hasattr(sys.implementation, 'name'))
|
|
self.assertTrue(hasattr(sys.implementation, 'version'))
|
|
self.assertTrue(hasattr(sys.implementation, 'hexversion'))
|
|
self.assertTrue(hasattr(sys.implementation, 'cache_tag'))
|
|
|
|
version = sys.implementation.version
|
|
self.assertEqual(version[:2], (version.major, version.minor))
|
|
|
|
hexversion = (version.major << 24 | version.minor << 16 |
|
|
version.micro << 8 | levels[version.releaselevel] << 4 |
|
|
version.serial << 0)
|
|
self.assertEqual(sys.implementation.hexversion, hexversion)
|
|
|
|
# PEP 421 requires that .name be lower case.
|
|
self.assertEqual(sys.implementation.name,
|
|
sys.implementation.name.lower())
|
|
|
|
def test_debugmallocstats(self):
|
|
# Test sys._debugmallocstats()
|
|
from test.script_helper import assert_python_ok
|
|
args = ['-c', 'import sys; sys._debugmallocstats()']
|
|
ret, out, err = assert_python_ok(*args)
|
|
self.assertIn(b"free PyDictObjects", err)
|
|
|
|
@unittest.skipUnless(hasattr(sys, "getallocatedblocks"),
|
|
"sys.getallocatedblocks unavailable on this build")
|
|
def test_getallocatedblocks(self):
|
|
# Some sanity checks
|
|
with_pymalloc = sysconfig.get_config_var('WITH_PYMALLOC')
|
|
a = sys.getallocatedblocks()
|
|
self.assertIs(type(a), int)
|
|
if with_pymalloc:
|
|
self.assertGreater(a, 0)
|
|
else:
|
|
# When WITH_PYMALLOC isn't available, we don't know anything
|
|
# about the underlying implementation: the function might
|
|
# return 0 or something greater.
|
|
self.assertGreaterEqual(a, 0)
|
|
try:
|
|
# While we could imagine a Python session where the number of
|
|
# multiple buffer objects would exceed the sharing of references,
|
|
# it is unlikely to happen in a normal test run.
|
|
self.assertLess(a, sys.gettotalrefcount())
|
|
except AttributeError:
|
|
# gettotalrefcount() not available
|
|
pass
|
|
gc.collect()
|
|
b = sys.getallocatedblocks()
|
|
self.assertLessEqual(b, a)
|
|
gc.collect()
|
|
c = sys.getallocatedblocks()
|
|
self.assertIn(c, range(b - 50, b + 50))
|
|
|
|
|
|
class SizeofTest(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
self.P = struct.calcsize('P')
|
|
self.longdigit = sys.int_info.sizeof_digit
|
|
import _testcapi
|
|
self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD
|
|
self.file = open(test.support.TESTFN, 'wb')
|
|
|
|
def tearDown(self):
|
|
self.file.close()
|
|
test.support.unlink(test.support.TESTFN)
|
|
|
|
check_sizeof = test.support.check_sizeof
|
|
|
|
def test_gc_head_size(self):
|
|
# Check that the gc header size is added to objects tracked by the gc.
|
|
vsize = test.support.calcvobjsize
|
|
gc_header_size = self.gc_headsize
|
|
# bool objects are not gc tracked
|
|
self.assertEqual(sys.getsizeof(True), vsize('') + self.longdigit)
|
|
# but lists are
|
|
self.assertEqual(sys.getsizeof([]), vsize('Pn') + gc_header_size)
|
|
|
|
def test_default(self):
|
|
size = test.support.calcvobjsize
|
|
self.assertEqual(sys.getsizeof(True), size('') + self.longdigit)
|
|
self.assertEqual(sys.getsizeof(True, -1), size('') + self.longdigit)
|
|
|
|
def test_objecttypes(self):
|
|
# check all types defined in Objects/
|
|
size = test.support.calcobjsize
|
|
vsize = test.support.calcvobjsize
|
|
check = self.check_sizeof
|
|
# bool
|
|
check(True, vsize('') + self.longdigit)
|
|
# buffer
|
|
# XXX
|
|
# builtin_function_or_method
|
|
check(len, size('3P')) # XXX check layout
|
|
# bytearray
|
|
samples = [b'', b'u'*100000]
|
|
for sample in samples:
|
|
x = bytearray(sample)
|
|
check(x, vsize('n2Pi') + x.__alloc__())
|
|
# bytearray_iterator
|
|
check(iter(bytearray()), size('nP'))
|
|
# cell
|
|
def get_cell():
|
|
x = 42
|
|
def inner():
|
|
return x
|
|
return inner
|
|
check(get_cell().__closure__[0], size('P'))
|
|
# code
|
|
check(get_cell().__code__, size('5i9Pi3P'))
|
|
check(get_cell.__code__, size('5i9Pi3P'))
|
|
def get_cell2(x):
|
|
def inner():
|
|
return x
|
|
return inner
|
|
check(get_cell2.__code__, size('5i9Pi3P') + 1)
|
|
# complex
|
|
check(complex(0,1), size('2d'))
|
|
# method_descriptor (descriptor object)
|
|
check(str.lower, size('3PP'))
|
|
# classmethod_descriptor (descriptor object)
|
|
# XXX
|
|
# member_descriptor (descriptor object)
|
|
import datetime
|
|
check(datetime.timedelta.days, size('3PP'))
|
|
# getset_descriptor (descriptor object)
|
|
import collections
|
|
check(collections.defaultdict.default_factory, size('3PP'))
|
|
# wrapper_descriptor (descriptor object)
|
|
check(int.__add__, size('3P2P'))
|
|
# method-wrapper (descriptor object)
|
|
check({}.__iter__, size('2P'))
|
|
# dict
|
|
check({}, size('n2P' + '2nPn' + 8*'n2P'))
|
|
longdict = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8}
|
|
check(longdict, size('n2P' + '2nPn') + 16*struct.calcsize('n2P'))
|
|
# dictionary-keyiterator
|
|
check({}.keys(), size('P'))
|
|
# dictionary-valueiterator
|
|
check({}.values(), size('P'))
|
|
# dictionary-itemiterator
|
|
check({}.items(), size('P'))
|
|
# dictionary iterator
|
|
check(iter({}), size('P2nPn'))
|
|
# dictproxy
|
|
class C(object): pass
|
|
check(C.__dict__, size('P'))
|
|
# BaseException
|
|
check(BaseException(), size('5Pb'))
|
|
# UnicodeEncodeError
|
|
check(UnicodeEncodeError("", "", 0, 0, ""), size('5Pb 2P2nP'))
|
|
# UnicodeDecodeError
|
|
check(UnicodeDecodeError("", b"", 0, 0, ""), size('5Pb 2P2nP'))
|
|
# UnicodeTranslateError
|
|
check(UnicodeTranslateError("", 0, 1, ""), size('5Pb 2P2nP'))
|
|
# ellipses
|
|
check(Ellipsis, size(''))
|
|
# EncodingMap
|
|
import codecs, encodings.iso8859_3
|
|
x = codecs.charmap_build(encodings.iso8859_3.decoding_table)
|
|
check(x, size('32B2iB'))
|
|
# enumerate
|
|
check(enumerate([]), size('n3P'))
|
|
# reverse
|
|
check(reversed(''), size('nP'))
|
|
# float
|
|
check(float(0), size('d'))
|
|
# sys.floatinfo
|
|
check(sys.float_info, vsize('') + self.P * len(sys.float_info))
|
|
# frame
|
|
import inspect
|
|
CO_MAXBLOCKS = 20
|
|
x = inspect.currentframe()
|
|
ncells = len(x.f_code.co_cellvars)
|
|
nfrees = len(x.f_code.co_freevars)
|
|
extras = x.f_code.co_stacksize + x.f_code.co_nlocals +\
|
|
ncells + nfrees - 1
|
|
check(x, vsize('13P3ic' + CO_MAXBLOCKS*'3i' + 'P' + extras*'P'))
|
|
# function
|
|
def func(): pass
|
|
check(func, size('12P'))
|
|
class c():
|
|
@staticmethod
|
|
def foo():
|
|
pass
|
|
@classmethod
|
|
def bar(cls):
|
|
pass
|
|
# staticmethod
|
|
check(foo, size('PP'))
|
|
# classmethod
|
|
check(bar, size('PP'))
|
|
# generator
|
|
def get_gen(): yield 1
|
|
check(get_gen(), size('Pb2P'))
|
|
# iterator
|
|
check(iter('abc'), size('lP'))
|
|
# callable-iterator
|
|
import re
|
|
check(re.finditer('',''), size('2P'))
|
|
# list
|
|
samples = [[], [1,2,3], ['1', '2', '3']]
|
|
for sample in samples:
|
|
check(sample, vsize('Pn') + len(sample)*self.P)
|
|
# sortwrapper (list)
|
|
# XXX
|
|
# cmpwrapper (list)
|
|
# XXX
|
|
# listiterator (list)
|
|
check(iter([]), size('lP'))
|
|
# listreverseiterator (list)
|
|
check(reversed([]), size('nP'))
|
|
# int
|
|
check(0, vsize(''))
|
|
check(1, vsize('') + self.longdigit)
|
|
check(-1, vsize('') + self.longdigit)
|
|
PyLong_BASE = 2**sys.int_info.bits_per_digit
|
|
check(int(PyLong_BASE), vsize('') + 2*self.longdigit)
|
|
check(int(PyLong_BASE**2-1), vsize('') + 2*self.longdigit)
|
|
check(int(PyLong_BASE**2), vsize('') + 3*self.longdigit)
|
|
# memoryview
|
|
check(memoryview(b''), size('Pnin 2P2n2i5P 3cPn'))
|
|
# module
|
|
check(unittest, size('PnPPP'))
|
|
# None
|
|
check(None, size(''))
|
|
# NotImplementedType
|
|
check(NotImplemented, size(''))
|
|
# object
|
|
check(object(), size(''))
|
|
# property (descriptor object)
|
|
class C(object):
|
|
def getx(self): return self.__x
|
|
def setx(self, value): self.__x = value
|
|
def delx(self): del self.__x
|
|
x = property(getx, setx, delx, "")
|
|
check(x, size('4Pi'))
|
|
# PyCapsule
|
|
# XXX
|
|
# rangeiterator
|
|
check(iter(range(1)), size('4l'))
|
|
# reverse
|
|
check(reversed(''), size('nP'))
|
|
# range
|
|
check(range(1), size('4P'))
|
|
check(range(66000), size('4P'))
|
|
# set
|
|
# frozenset
|
|
PySet_MINSIZE = 8
|
|
samples = [[], range(10), range(50)]
|
|
s = size('3n2P' + PySet_MINSIZE*'nP' + 'nP')
|
|
for sample in samples:
|
|
minused = len(sample)
|
|
if minused == 0: tmp = 1
|
|
# the computation of minused is actually a bit more complicated
|
|
# but this suffices for the sizeof test
|
|
minused = minused*2
|
|
newsize = PySet_MINSIZE
|
|
while newsize <= minused:
|
|
newsize = newsize << 1
|
|
if newsize <= 8:
|
|
check(set(sample), s)
|
|
check(frozenset(sample), s)
|
|
else:
|
|
check(set(sample), s + newsize*struct.calcsize('nP'))
|
|
check(frozenset(sample), s + newsize*struct.calcsize('nP'))
|
|
# setiterator
|
|
check(iter(set()), size('P3n'))
|
|
# slice
|
|
check(slice(0), size('3P'))
|
|
# super
|
|
check(super(int), size('3P'))
|
|
# tuple
|
|
check((), vsize(''))
|
|
check((1,2,3), vsize('') + 3*self.P)
|
|
# type
|
|
# static type: PyTypeObject
|
|
s = vsize('P2n15Pl4Pn9Pn11PIP')
|
|
check(int, s)
|
|
# (PyTypeObject + PyNumberMethods + PyMappingMethods +
|
|
# PySequenceMethods + PyBufferProcs + 4P)
|
|
s = vsize('P2n15Pl4Pn9Pn11PIP') + struct.calcsize('34P 3P 10P 2P 4P')
|
|
# Separate block for PyDictKeysObject with 4 entries
|
|
s += struct.calcsize("2nPn") + 4*struct.calcsize("n2P")
|
|
# class
|
|
class newstyleclass(object): pass
|
|
check(newstyleclass, s)
|
|
# dict with shared keys
|
|
check(newstyleclass().__dict__, size('n2P' + '2nPn'))
|
|
# unicode
|
|
# each tuple contains a string and its expected character size
|
|
# don't put any static strings here, as they may contain
|
|
# wchar_t or UTF-8 representations
|
|
samples = ['1'*100, '\xff'*50,
|
|
'\u0100'*40, '\uffff'*100,
|
|
'\U00010000'*30, '\U0010ffff'*100]
|
|
asciifields = "nnbP"
|
|
compactfields = asciifields + "nPn"
|
|
unicodefields = compactfields + "P"
|
|
for s in samples:
|
|
maxchar = ord(max(s))
|
|
if maxchar < 128:
|
|
L = size(asciifields) + len(s) + 1
|
|
elif maxchar < 256:
|
|
L = size(compactfields) + len(s) + 1
|
|
elif maxchar < 65536:
|
|
L = size(compactfields) + 2*(len(s) + 1)
|
|
else:
|
|
L = size(compactfields) + 4*(len(s) + 1)
|
|
check(s, L)
|
|
# verify that the UTF-8 size is accounted for
|
|
s = chr(0x4000) # 4 bytes canonical representation
|
|
check(s, size(compactfields) + 4)
|
|
# compile() will trigger the generation of the UTF-8
|
|
# representation as a side effect
|
|
compile(s, "<stdin>", "eval")
|
|
check(s, size(compactfields) + 4 + 4)
|
|
# TODO: add check that forces the presence of wchar_t representation
|
|
# TODO: add check that forces layout of unicodefields
|
|
# weakref
|
|
import weakref
|
|
check(weakref.ref(int), size('2Pn2P'))
|
|
# weakproxy
|
|
# XXX
|
|
# weakcallableproxy
|
|
check(weakref.proxy(int), size('2Pn2P'))
|
|
|
|
def test_pythontypes(self):
|
|
# check all types defined in Python/
|
|
size = test.support.calcobjsize
|
|
vsize = test.support.calcvobjsize
|
|
check = self.check_sizeof
|
|
# _ast.AST
|
|
import _ast
|
|
check(_ast.AST(), size('P'))
|
|
try:
|
|
raise TypeError
|
|
except TypeError:
|
|
tb = sys.exc_info()[2]
|
|
# traceback
|
|
if tb is not None:
|
|
check(tb, size('2P2i'))
|
|
# symtable entry
|
|
# XXX
|
|
# sys.flags
|
|
check(sys.flags, vsize('') + self.P * len(sys.flags))
|
|
|
|
|
|
def test_main():
|
|
test.support.run_unittest(SysModuleTest, SizeofTest)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|