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svn+ssh://pythondev@svn.python.org/python/trunk ........ r60679 | raymond.hettinger | 2008-02-09 02:18:42 +0100 (Sat, 09 Feb 2008) | 1 line Make ABC containers inherit as documented. ........ r60684 | raymond.hettinger | 2008-02-09 04:34:52 +0100 (Sat, 09 Feb 2008) | 1 line Merge with r60683. ........ r60687 | raymond.hettinger | 2008-02-09 05:37:49 +0100 (Sat, 09 Feb 2008) | 1 line Add -3 warnings that set.copy(), dict.copy(), and defaultdict.copy() will go away in Py3.x ........ r60689 | raymond.hettinger | 2008-02-09 11:04:19 +0100 (Sat, 09 Feb 2008) | 1 line Metaclass declaration is inherited ........ r60691 | raymond.hettinger | 2008-02-09 11:06:20 +0100 (Sat, 09 Feb 2008) | 1 line Temporarily disable this test. It's been broken for a week. ........ r60695 | nick.coghlan | 2008-02-09 16:28:09 +0100 (Sat, 09 Feb 2008) | 1 line Issue 2021: Allow NamedTemporaryFile and SpooledTemporaryFile to be used as context managers. (The NamedTemporaryFile fix should be considered for backporting to 2.5) ........
355 lines
12 KiB
Python
355 lines
12 KiB
Python
# -*- coding: iso-8859-1 -*-
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import unittest, test.test_support
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import sys, io
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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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# 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_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 cStringIO 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_site", "ignore_environment", "tabcheck", "verbose")
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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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def test_clear_type_cache(self):
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sys._clear_type_cache()
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def test_compact_freelists(self):
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sys._compact_freelists()
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r = sys._compact_freelists()
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## freed blocks shouldn't change
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#self.assertEqual(r[0][2], 0)
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## fill freelists
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#ints = list(range(10000))
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#floats = [float(i) for i in ints]
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#del ints
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#del floats
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## should free more than 100 blocks
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#r = sys._compact_freelists()
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#self.assert_(r[0][1] > 100, r[0][1])
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#self.assert_(r[0][2] > 100, r[0][2])
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def test_main():
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test.test_support.run_unittest(SysModuleTest)
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if __name__ == "__main__":
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test_main()
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