675 lines
23 KiB
Python
675 lines
23 KiB
Python
# -*- coding: iso-8859-1 -*-
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import unittest, test.support
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import sys, io, os
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import struct
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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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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.assert_(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.assert_(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.assert_("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.assertEquals(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.assertEquals(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.assertEquals(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.assertEquals(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.assertEquals(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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import subprocess
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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 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.assert_(isinstance(sys.getdefaultencoding(), str))
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# testing sys.settrace() is done in test_trace.py
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# testing sys.setprofile() is done in test_profile.py
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def test_setcheckinterval(self):
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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.assertEquals(sys.getcheckinterval(), n)
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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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def test_getwindowsversion(self):
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if hasattr(sys, "getwindowsversion"):
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v = sys.getwindowsversion()
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self.assert_(isinstance(v, tuple))
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self.assertEqual(len(v), 5)
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self.assert_(isinstance(v[0], int))
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self.assert_(isinstance(v[1], int))
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self.assert_(isinstance(v[2], int))
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self.assert_(isinstance(v[3], int))
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self.assert_(isinstance(v[4], str))
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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.assert_(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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def test_refcount(self):
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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.assert_(isinstance(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.assert_(
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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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def current_frames_with_threads(self):
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import threading, _thread
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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(_thread.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 = _thread.get_ident()
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self.assert_(main_id in d)
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self.assert_(thread_id in 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.assert_(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.assert_(sourceline in ["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.assert_(0 in d)
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self.assert_(d[0] is sys._getframe())
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def test_attributes(self):
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self.assert_(isinstance(sys.api_version, int))
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self.assert_(isinstance(sys.argv, list))
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self.assert_(sys.byteorder in ("little", "big"))
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self.assert_(isinstance(sys.builtin_module_names, tuple))
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self.assert_(isinstance(sys.copyright, str))
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self.assert_(isinstance(sys.exec_prefix, str))
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self.assert_(isinstance(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.assert_(isinstance(sys.hexversion, int))
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self.assert_(isinstance(sys.maxsize, int))
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self.assert_(isinstance(sys.maxunicode, int))
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self.assert_(isinstance(sys.platform, str))
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self.assert_(isinstance(sys.prefix, str))
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self.assert_(isinstance(sys.version, str))
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vi = sys.version_info
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self.assert_(isinstance(vi, tuple))
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self.assertEqual(len(vi), 5)
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self.assert_(isinstance(vi[0], int))
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self.assert_(isinstance(vi[1], int))
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self.assert_(isinstance(vi[2], int))
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self.assert_(vi[3] in ("alpha", "beta", "candidate", "final"))
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self.assert_(isinstance(vi[4], int))
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def test_43581(self):
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# Can't use sys.stdout, as this is a StringIO object when
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# the test runs under regrtest.
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self.assertEqual(sys.__stdout__.encoding, sys.__stderr__.encoding)
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def test_intern(self):
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self.assertRaises(TypeError, sys.intern)
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s = "never interned before"
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self.assert_(sys.intern(s) is s)
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s2 = s.swapcase().swapcase()
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self.assert_(sys.intern(s2) is s)
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# Subclasses of string can't be interned, because they
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# provide too much opportunity for insane things to happen.
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# We don't want them in the interned dict and if they aren't
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# actually interned, we don't want to create the appearance
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# that they are by allowing intern() to succeeed.
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class S(str):
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def __hash__(self):
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return 123
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self.assertRaises(TypeError, sys.intern, S("abc"))
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def test_sys_flags(self):
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self.failUnless(sys.flags)
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attrs = ("debug", "division_warning",
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"inspect", "interactive", "optimize", "dont_write_bytecode",
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"no_user_site", "no_site", "ignore_environment", "verbose",
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"bytes_warning")
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for attr in attrs:
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self.assert_(hasattr(sys.flags, attr), attr)
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self.assertEqual(type(getattr(sys.flags, attr)), int, attr)
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self.assert_(repr(sys.flags))
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self.assertEqual(len(sys.flags), len(attrs))
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def test_clear_type_cache(self):
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sys._clear_type_cache()
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def test_ioencoding(self):
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import subprocess,os
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env = dict(os.environ)
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# Test character: cent sign, encoded as 0x4A (ASCII J) in CP424,
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# not representable in ASCII.
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env["PYTHONIOENCODING"] = "cp424"
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p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'],
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stdout = subprocess.PIPE, env=env)
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out = p.stdout.read()
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self.assertEqual(out, "\xa2\n".encode("cp424"))
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env["PYTHONIOENCODING"] = "ascii:replace"
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p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'],
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stdout = subprocess.PIPE, env=env)
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out = p.stdout.read().strip()
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self.assertEqual(out, b'?')
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class SizeofTest(unittest.TestCase):
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TPFLAGS_HAVE_GC = 1<<14
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TPFLAGS_HEAPTYPE = 1<<9
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def setUp(self):
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self.c = len(struct.pack('c', ' '))
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self.H = len(struct.pack('H', 0))
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self.i = len(struct.pack('i', 0))
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self.l = len(struct.pack('l', 0))
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self.P = len(struct.pack('P', 0))
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# due to missing size_t information from struct, it is assumed that
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# sizeof(Py_ssize_t) = sizeof(void*)
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self.header = 'PP'
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self.vheader = self.header + 'P'
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if hasattr(sys, "gettotalrefcount"):
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self.header += '2P'
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self.vheader += '2P'
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import _testcapi
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self.gc_headsize = _testcapi.SIZEOF_PYGC_HEAD
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self.file = open(test.support.TESTFN, 'wb')
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def tearDown(self):
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self.file.close()
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test.support.unlink(test.support.TESTFN)
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def check_sizeof(self, o, size):
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result = sys.getsizeof(o)
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# add GC header size
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if ((type(o) == type) and (o.__flags__ & self.TPFLAGS_HEAPTYPE) or\
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((type(o) != type) and (type(o).__flags__ & self.TPFLAGS_HAVE_GC))):
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size += self.gc_headsize
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msg = 'wrong size for %s: got %d, expected %d' \
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% (type(o), result, size)
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self.assertEqual(result, size, msg)
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def calcsize(self, fmt):
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"""Wrapper around struct.calcsize which enforces the alignment of the
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end of a structure to the alignment requirement of pointer.
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Note: This wrapper should only be used if a pointer member is included
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and no member with a size larger than a pointer exists.
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"""
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return struct.calcsize(fmt + '0P')
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def test_gc_head_size(self):
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# Check that the gc header size is added to objects tracked by the gc.
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h = self.header
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vh = self.vheader
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size = self.calcsize
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gc_header_size = self.gc_headsize
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# bool objects are not gc tracked
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self.assertEqual(sys.getsizeof(True), size(vh) + self.H)
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# but lists are
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self.assertEqual(sys.getsizeof([]), size(vh + 'PP') + gc_header_size)
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def test_default(self):
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h = self.header
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vh = self.vheader
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size = self.calcsize
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self.assertEqual(sys.getsizeof(True), size(vh) + self.H)
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self.assertEqual(sys.getsizeof(True, -1), size(vh) + self.H)
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def test_objecttypes(self):
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# check all types defined in Objects/
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h = self.header
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vh = self.vheader
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size = self.calcsize
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check = self.check_sizeof
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# bool
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check(True, size(vh) + self.H)
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# buffer
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# XXX
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# builtin_function_or_method
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check(len, size(h + '3P'))
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# bytearray
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samples = [b'', b'u'*100000]
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for sample in samples:
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x = bytearray(sample)
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check(x, size(vh + 'iPP') + x.__alloc__() * self.c)
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# bytearray_iterator
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check(iter(bytearray()), size(h + 'PP'))
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# cell
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def get_cell():
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x = 42
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def inner():
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return x
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return inner
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check(get_cell().__closure__[0], size(h + 'P'))
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# code
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check(get_cell().__code__, size(h + '5i8Pi2P'))
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# complex
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check(complex(0,1), size(h + '2d'))
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# method_descriptor (descriptor object)
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check(str.lower, size(h + '2PP'))
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# classmethod_descriptor (descriptor object)
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# XXX
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# member_descriptor (descriptor object)
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import datetime
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check(datetime.timedelta.days, size(h + '2PP'))
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# getset_descriptor (descriptor object)
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import collections
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check(collections.defaultdict.default_factory, size(h + '2PP'))
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# wrapper_descriptor (descriptor object)
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check(int.__add__, size(h + '2P2P'))
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# method-wrapper (descriptor object)
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check({}.__iter__, size(h + '2P'))
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# dict
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check({}, size(h + '3P2P' + 8*'P2P'))
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longdict = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8}
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check(longdict, size(h + '3P2P' + 8*'P2P') + 16*size('P2P'))
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# dictionary-keyiterator
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check({}.keys(), size(h + 'P'))
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# dictionary-valueiterator
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check({}.values(), size(h + 'P'))
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# dictionary-itemiterator
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check({}.items(), size(h + 'P'))
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# dictproxy
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class C(object): pass
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check(C.__dict__, size(h + 'P'))
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# BaseException
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check(BaseException(), size(h + '5P'))
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# UnicodeEncodeError
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check(UnicodeEncodeError("", "", 0, 0, ""), size(h + '5P 2P2PP'))
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# UnicodeDecodeError
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# XXX
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# check(UnicodeDecodeError("", "", 0, 0, ""), size(h + '5P2PP'))
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# UnicodeTranslateError
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check(UnicodeTranslateError("", 0, 1, ""), size(h + '5P 2P2PP'))
|
|
# ellipses
|
|
check(Ellipsis, size(h + ''))
|
|
# EncodingMap
|
|
import codecs, encodings.iso8859_3
|
|
x = codecs.charmap_build(encodings.iso8859_3.decoding_table)
|
|
check(x, size(h + '32B2iB'))
|
|
# enumerate
|
|
check(enumerate([]), size(h + 'l3P'))
|
|
# reverse
|
|
check(reversed(''), size(h + 'PP'))
|
|
# float
|
|
check(float(0), size(h + 'd'))
|
|
# sys.floatinfo
|
|
check(sys.float_info, size(vh) + 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, size(vh + '12P3i' + CO_MAXBLOCKS*'3i' + 'P' + extras*'P'))
|
|
# function
|
|
def func(): pass
|
|
check(func, size(h + '11P'))
|
|
class c():
|
|
@staticmethod
|
|
def foo():
|
|
pass
|
|
@classmethod
|
|
def bar(cls):
|
|
pass
|
|
# staticmethod
|
|
check(foo, size(h + 'P'))
|
|
# classmethod
|
|
check(bar, size(h + 'P'))
|
|
# generator
|
|
def get_gen(): yield 1
|
|
check(get_gen(), size(h + 'Pi2P'))
|
|
# iterator
|
|
check(iter('abc'), size(h + 'lP'))
|
|
# callable-iterator
|
|
import re
|
|
check(re.finditer('',''), size(h + '2P'))
|
|
# list
|
|
samples = [[], [1,2,3], ['1', '2', '3']]
|
|
for sample in samples:
|
|
check(sample, size(vh + 'PP') + len(sample)*self.P)
|
|
# sortwrapper (list)
|
|
# XXX
|
|
# cmpwrapper (list)
|
|
# XXX
|
|
# listiterator (list)
|
|
check(iter([]), size(h + 'lP'))
|
|
# listreverseiterator (list)
|
|
check(reversed([]), size(h + 'lP'))
|
|
# long
|
|
check(0, size(vh))
|
|
check(1, size(vh) + self.H)
|
|
check(-1, size(vh) + self.H)
|
|
check(32768, size(vh) + 2*self.H)
|
|
check(32768*32768-1, size(vh) + 2*self.H)
|
|
check(32768*32768, size(vh) + 3*self.H)
|
|
# memory
|
|
check(memoryview(b''), size(h + 'P PP2P2i7P'))
|
|
# module
|
|
check(unittest, size(h + '3P'))
|
|
# None
|
|
check(None, size(h + ''))
|
|
# NotImplementedType
|
|
check(NotImplemented, size(h))
|
|
# object
|
|
check(object(), size(h + ''))
|
|
# 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(h + '4Pi'))
|
|
# PyCObject
|
|
# XXX
|
|
# rangeiterator
|
|
check(iter(range(1)), size(h + '4l'))
|
|
# reverse
|
|
check(reversed(''), size(h + 'PP'))
|
|
# range
|
|
check(range(1), size(h + '3P'))
|
|
check(range(66000), size(h + '3P'))
|
|
# set
|
|
# frozenset
|
|
PySet_MINSIZE = 8
|
|
samples = [[], range(10), range(50)]
|
|
s = size(h + '3P2P' + PySet_MINSIZE*'lP' + 'lP')
|
|
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('lP'))
|
|
check(frozenset(sample), s + newsize*struct.calcsize('lP'))
|
|
# setiterator
|
|
check(iter(set()), size(h + 'P3P'))
|
|
# slice
|
|
check(slice(0), size(h + '3P'))
|
|
# super
|
|
check(super(int), size(h + '3P'))
|
|
# tuple
|
|
check((), size(vh))
|
|
check((1,2,3), size(vh) + 3*self.P)
|
|
# type
|
|
# (PyTypeObject + PyNumberMethods + PyMappingMethods +
|
|
# PySequenceMethods + PyBufferProcs)
|
|
s = size(vh + 'P2P15Pl4PP9PP11PI') + size('16Pi17P 3P 10P 2P 2P')
|
|
check(int, s)
|
|
# class
|
|
class newstyleclass(object): pass
|
|
check(newstyleclass, s)
|
|
# unicode
|
|
usize = len('\0'.encode('unicode-internal'))
|
|
samples = ['', '1'*100]
|
|
# we need to test for both sizes, because we don't know if the string
|
|
# has been cached
|
|
for s in samples:
|
|
basicsize = size(h + 'PPliP') + usize * (len(s) + 1)
|
|
check(s, basicsize)
|
|
# weakref
|
|
import weakref
|
|
check(weakref.ref(int), size(h + '2Pl2P'))
|
|
# weakproxy
|
|
# XXX
|
|
# weakcallableproxy
|
|
check(weakref.proxy(int), size(h + '2Pl2P'))
|
|
|
|
def test_pythontypes(self):
|
|
# check all types defined in Python/
|
|
h = self.header
|
|
vh = self.vheader
|
|
size = self.calcsize
|
|
check = self.check_sizeof
|
|
# _ast.AST
|
|
import _ast
|
|
check(_ast.AST(), size(h + ''))
|
|
# imp.NullImporter
|
|
import imp
|
|
check(imp.NullImporter(self.file.name), size(h + ''))
|
|
try:
|
|
raise TypeError
|
|
except TypeError:
|
|
tb = sys.exc_info()[2]
|
|
# traceback
|
|
if tb != None:
|
|
check(tb, size(h + '2P2i'))
|
|
# symtable entry
|
|
# XXX
|
|
# sys.flags
|
|
check(sys.flags, size(vh) + self.P * len(sys.flags))
|
|
|
|
def test_setfilesystemencoding(self):
|
|
old = sys.getfilesystemencoding()
|
|
sys.setfilesystemencoding("iso-8859-1")
|
|
self.assertEqual(sys.getfilesystemencoding(), "iso-8859-1")
|
|
sys.setfilesystemencoding(old)
|
|
|
|
def test_main():
|
|
test.support.run_unittest(SysModuleTest, SizeofTest)
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|