| # -*- coding: iso-8859-1 -*- |
| import unittest, test.support |
| import sys, io, os |
| import struct |
| |
| class SysModuleTest(unittest.TestCase): |
| |
| def setUp(self): |
| self.orig_stdout = sys.stdout |
| self.orig_stderr = sys.stderr |
| self.orig_displayhook = sys.displayhook |
| |
| def tearDown(self): |
| sys.stdout = self.orig_stdout |
| sys.stderr = self.orig_stderr |
| sys.displayhook = self.orig_displayhook |
| |
| def test_original_displayhook(self): |
| import builtins |
| out = io.StringIO() |
| sys.stdout = out |
| |
| dh = sys.__displayhook__ |
| |
| self.assertRaises(TypeError, dh) |
| if hasattr(builtins, "_"): |
| del builtins._ |
| |
| dh(None) |
| self.assertEqual(out.getvalue(), "") |
| self.assert_(not hasattr(builtins, "_")) |
| dh(42) |
| self.assertEqual(out.getvalue(), "42\n") |
| self.assertEqual(builtins._, 42) |
| |
| del sys.stdout |
| self.assertRaises(RuntimeError, dh, 42) |
| |
| def test_lost_displayhook(self): |
| del sys.displayhook |
| code = compile("42", "<string>", "single") |
| self.assertRaises(RuntimeError, eval, code) |
| |
| def test_custom_displayhook(self): |
| def baddisplayhook(obj): |
| raise ValueError |
| sys.displayhook = baddisplayhook |
| code = compile("42", "<string>", "single") |
| self.assertRaises(ValueError, eval, code) |
| |
| def test_original_excepthook(self): |
| err = io.StringIO() |
| sys.stderr = err |
| |
| eh = sys.__excepthook__ |
| |
| self.assertRaises(TypeError, eh) |
| try: |
| raise ValueError(42) |
| except ValueError as exc: |
| eh(*sys.exc_info()) |
| |
| self.assert_(err.getvalue().endswith("ValueError: 42\n")) |
| |
| # FIXME: testing the code for a lost or replaced excepthook in |
| # Python/pythonrun.c::PyErr_PrintEx() is tricky. |
| |
| def test_exit(self): |
| self.assertRaises(TypeError, sys.exit, 42, 42) |
| |
| # call without argument |
| try: |
| sys.exit(0) |
| except SystemExit as exc: |
| self.assertEquals(exc.code, 0) |
| except: |
| self.fail("wrong exception") |
| else: |
| self.fail("no exception") |
| |
| # call with tuple argument with one entry |
| # entry will be unpacked |
| try: |
| sys.exit(42) |
| except SystemExit as exc: |
| self.assertEquals(exc.code, 42) |
| except: |
| self.fail("wrong exception") |
| else: |
| self.fail("no exception") |
| |
| # call with integer argument |
| try: |
| sys.exit((42,)) |
| except SystemExit as exc: |
| self.assertEquals(exc.code, 42) |
| except: |
| self.fail("wrong exception") |
| else: |
| self.fail("no exception") |
| |
| # call with string argument |
| try: |
| sys.exit("exit") |
| except SystemExit as exc: |
| self.assertEquals(exc.code, "exit") |
| except: |
| self.fail("wrong exception") |
| else: |
| self.fail("no exception") |
| |
| # call with tuple argument with two entries |
| try: |
| sys.exit((17, 23)) |
| except SystemExit as exc: |
| self.assertEquals(exc.code, (17, 23)) |
| except: |
| self.fail("wrong exception") |
| else: |
| self.fail("no exception") |
| |
| # test that the exit machinery handles SystemExits properly |
| import subprocess |
| rc = subprocess.call([sys.executable, "-c", |
| "raise SystemExit(47)"]) |
| self.assertEqual(rc, 47) |
| |
| def test_getdefaultencoding(self): |
| self.assertRaises(TypeError, sys.getdefaultencoding, 42) |
| # can't check more than the type, as the user might have changed it |
| self.assert_(isinstance(sys.getdefaultencoding(), str)) |
| |
| # testing sys.settrace() is done in test_trace.py |
| # testing sys.setprofile() is done in test_profile.py |
| |
| def test_setcheckinterval(self): |
| self.assertRaises(TypeError, sys.setcheckinterval) |
| orig = sys.getcheckinterval() |
| for n in 0, 100, 120, orig: # orig last to restore starting state |
| sys.setcheckinterval(n) |
| self.assertEquals(sys.getcheckinterval(), n) |
| |
| def test_recursionlimit(self): |
| self.assertRaises(TypeError, sys.getrecursionlimit, 42) |
| oldlimit = sys.getrecursionlimit() |
| self.assertRaises(TypeError, sys.setrecursionlimit) |
| self.assertRaises(ValueError, sys.setrecursionlimit, -42) |
| sys.setrecursionlimit(10000) |
| self.assertEqual(sys.getrecursionlimit(), 10000) |
| sys.setrecursionlimit(oldlimit) |
| |
| def test_getwindowsversion(self): |
| if hasattr(sys, "getwindowsversion"): |
| v = sys.getwindowsversion() |
| self.assert_(isinstance(v, tuple)) |
| self.assertEqual(len(v), 5) |
| self.assert_(isinstance(v[0], int)) |
| self.assert_(isinstance(v[1], int)) |
| self.assert_(isinstance(v[2], int)) |
| self.assert_(isinstance(v[3], int)) |
| self.assert_(isinstance(v[4], str)) |
| |
| def test_dlopenflags(self): |
| if hasattr(sys, "setdlopenflags"): |
| self.assert_(hasattr(sys, "getdlopenflags")) |
| self.assertRaises(TypeError, sys.getdlopenflags, 42) |
| oldflags = sys.getdlopenflags() |
| self.assertRaises(TypeError, sys.setdlopenflags) |
| sys.setdlopenflags(oldflags+1) |
| self.assertEqual(sys.getdlopenflags(), oldflags+1) |
| sys.setdlopenflags(oldflags) |
| |
| def test_refcount(self): |
| self.assertRaises(TypeError, sys.getrefcount) |
| c = sys.getrefcount(None) |
| n = None |
| self.assertEqual(sys.getrefcount(None), c+1) |
| del n |
| self.assertEqual(sys.getrefcount(None), c) |
| if hasattr(sys, "gettotalrefcount"): |
| self.assert_(isinstance(sys.gettotalrefcount(), int)) |
| |
| def test_getframe(self): |
| self.assertRaises(TypeError, sys._getframe, 42, 42) |
| self.assertRaises(ValueError, sys._getframe, 2000000000) |
| self.assert_( |
| SysModuleTest.test_getframe.__code__ \ |
| is sys._getframe().f_code |
| ) |
| |
| # sys._current_frames() is a CPython-only gimmick. |
| def test_current_frames(self): |
| have_threads = True |
| try: |
| import _thread |
| except ImportError: |
| have_threads = False |
| |
| if have_threads: |
| self.current_frames_with_threads() |
| else: |
| self.current_frames_without_threads() |
| |
| # Test sys._current_frames() in a WITH_THREADS build. |
| def current_frames_with_threads(self): |
| import threading, _thread |
| import traceback |
| |
| # Spawn a thread that blocks at a known place. Then the main |
| # thread does sys._current_frames(), and verifies that the frames |
| # returned make sense. |
| entered_g = threading.Event() |
| leave_g = threading.Event() |
| thread_info = [] # the thread's id |
| |
| def f123(): |
| g456() |
| |
| def g456(): |
| thread_info.append(_thread.get_ident()) |
| entered_g.set() |
| leave_g.wait() |
| |
| t = threading.Thread(target=f123) |
| t.start() |
| entered_g.wait() |
| |
| # At this point, t has finished its entered_g.set(), although it's |
| # impossible to guess whether it's still on that line or has moved on |
| # to its leave_g.wait(). |
| self.assertEqual(len(thread_info), 1) |
| thread_id = thread_info[0] |
| |
| d = sys._current_frames() |
| |
| main_id = _thread.get_ident() |
| self.assert_(main_id in d) |
| self.assert_(thread_id in d) |
| |
| # Verify that the captured main-thread frame is _this_ frame. |
| frame = d.pop(main_id) |
| self.assert_(frame is sys._getframe()) |
| |
| # Verify that the captured thread frame is blocked in g456, called |
| # from f123. This is a litte tricky, since various bits of |
| # threading.py are also in the thread's call stack. |
| frame = d.pop(thread_id) |
| stack = traceback.extract_stack(frame) |
| for i, (filename, lineno, funcname, sourceline) in enumerate(stack): |
| if funcname == "f123": |
| break |
| else: |
| self.fail("didn't find f123() on thread's call stack") |
| |
| self.assertEqual(sourceline, "g456()") |
| |
| # And the next record must be for g456(). |
| filename, lineno, funcname, sourceline = stack[i+1] |
| self.assertEqual(funcname, "g456") |
| self.assert_(sourceline in ["leave_g.wait()", "entered_g.set()"]) |
| |
| # Reap the spawned thread. |
| leave_g.set() |
| t.join() |
| |
| # Test sys._current_frames() when thread support doesn't exist. |
| def current_frames_without_threads(self): |
| # Not much happens here: there is only one thread, with artificial |
| # "thread id" 0. |
| d = sys._current_frames() |
| self.assertEqual(len(d), 1) |
| self.assert_(0 in d) |
| self.assert_(d[0] is sys._getframe()) |
| |
| def test_attributes(self): |
| self.assert_(isinstance(sys.api_version, int)) |
| self.assert_(isinstance(sys.argv, list)) |
| self.assert_(sys.byteorder in ("little", "big")) |
| self.assert_(isinstance(sys.builtin_module_names, tuple)) |
| self.assert_(isinstance(sys.copyright, str)) |
| self.assert_(isinstance(sys.exec_prefix, str)) |
| self.assert_(isinstance(sys.executable, str)) |
| self.assertEqual(len(sys.float_info), 11) |
| self.assertEqual(sys.float_info.radix, 2) |
| self.assert_(isinstance(sys.hexversion, int)) |
| self.assert_(isinstance(sys.maxsize, int)) |
| self.assert_(isinstance(sys.maxunicode, int)) |
| self.assert_(isinstance(sys.platform, str)) |
| self.assert_(isinstance(sys.prefix, str)) |
| self.assert_(isinstance(sys.version, str)) |
| vi = sys.version_info |
| self.assert_(isinstance(vi, tuple)) |
| self.assertEqual(len(vi), 5) |
| self.assert_(isinstance(vi[0], int)) |
| self.assert_(isinstance(vi[1], int)) |
| self.assert_(isinstance(vi[2], int)) |
| self.assert_(vi[3] in ("alpha", "beta", "candidate", "final")) |
| self.assert_(isinstance(vi[4], int)) |
| |
| 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): |
| self.assertRaises(TypeError, sys.intern) |
| s = "never interned before" |
| self.assert_(sys.intern(s) is s) |
| s2 = s.swapcase().swapcase() |
| self.assert_(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 succeeed. |
| class S(str): |
| def __hash__(self): |
| return 123 |
| |
| self.assertRaises(TypeError, sys.intern, S("abc")) |
| |
| |
| def test_sys_flags(self): |
| self.failUnless(sys.flags) |
| attrs = ("debug", "division_warning", |
| "inspect", "interactive", "optimize", "dont_write_bytecode", |
| "no_user_site", "no_site", "ignore_environment", "verbose", |
| "bytes_warning") |
| for attr in attrs: |
| self.assert_(hasattr(sys.flags, attr), attr) |
| self.assertEqual(type(getattr(sys.flags, attr)), int, attr) |
| self.assert_(repr(sys.flags)) |
| self.assertEqual(len(sys.flags), len(attrs)) |
| |
| def test_clear_type_cache(self): |
| sys._clear_type_cache() |
| |
| def test_compact_freelists(self): |
| sys._compact_freelists() |
| r = sys._compact_freelists() |
| ## freed blocks shouldn't change |
| #self.assertEqual(r[0][2], 0) |
| ## fill freelists |
| #ints = list(range(10000)) |
| #floats = [float(i) for i in ints] |
| #del ints |
| #del floats |
| ## should free more than 100 blocks |
| #r = sys._compact_freelists() |
| #self.assert_(r[0][1] > 100, r[0][1]) |
| #self.assert_(r[0][2] > 100, r[0][2]) |
| |
| def test_ioencoding(self): |
| import subprocess,os |
| 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.stdout.read() |
| self.assertEqual(out, "\xa2\n".encode("cp424")) |
| |
| env["PYTHONIOENCODING"] = "ascii:replace" |
| p = subprocess.Popen([sys.executable, "-c", 'print(chr(0xa2))'], |
| stdout = subprocess.PIPE, env=env) |
| out = p.stdout.read().strip() |
| self.assertEqual(out, b'?') |
| |
| |
| class SizeofTest(unittest.TestCase): |
| |
| def setUp(self): |
| self.c = len(struct.pack('c', ' ')) |
| self.H = len(struct.pack('H', 0)) |
| self.i = len(struct.pack('i', 0)) |
| self.l = len(struct.pack('l', 0)) |
| self.P = len(struct.pack('P', 0)) |
| # due to missing size_t information from struct, it is assumed that |
| # sizeof(Py_ssize_t) = sizeof(void*) |
| self.header = 'PP' |
| if hasattr(sys, "gettotalrefcount"): |
| self.header += '2P' |
| self.file = open(test.support.TESTFN, 'wb') |
| |
| def tearDown(self): |
| self.file.close() |
| test.support.unlink(test.support.TESTFN) |
| |
| def check_sizeof(self, o, size, size2=None): |
| """Check size of o. Possible are size and optionally size2).""" |
| result = sys.getsizeof(o) |
| msg = 'wrong size for %s: got %d, expected ' % (type(o), result) |
| if (size2 != None) and (result != size): |
| self.assertEqual(result, size2, msg + str(size2)) |
| else: |
| self.assertEqual(result, size, msg + str(size)) |
| |
| def calcsize(self, fmt): |
| """Wrapper around struct.calcsize which enforces the alignment of the |
| end of a structure to the alignment requirement of pointer. |
| |
| Note: This wrapper should only be used if a pointer member is included |
| and no member with a size larger than a pointer exists. |
| """ |
| return struct.calcsize(fmt + '0P') |
| |
| def test_standardtypes(self): |
| h = self.header |
| size = self.calcsize |
| # cell |
| def get_cell(): |
| x = 42 |
| def inner(): |
| return x |
| return inner |
| self.check_sizeof(get_cell().__closure__[0], size(h + 'P')) |
| # code |
| self.check_sizeof(get_cell().__code__, size(h + '5i8Pi2P')) |
| # complex |
| self.check_sizeof(complex(0,1), size(h + '2d')) |
| # enumerate |
| self.check_sizeof(enumerate([]), size(h + 'l3P')) |
| # reverse |
| self.check_sizeof(reversed(''), size(h + 'PP')) |
| # float |
| self.check_sizeof(float(0), size(h + 'd')) |
| # function |
| def func(): pass |
| self.check_sizeof(func, size(h + '11P')) |
| class c(): |
| @staticmethod |
| def foo(): |
| pass |
| @classmethod |
| def bar(cls): |
| pass |
| # staticmethod |
| self.check_sizeof(foo, size(h + 'P')) |
| # classmethod |
| self.check_sizeof(bar, size(h + 'P')) |
| # generator |
| def get_gen(): yield 1 |
| self.check_sizeof(get_gen(), size(h + 'Pi2P')) |
| # builtin_function_or_method |
| self.check_sizeof(abs, size(h + '3P')) |
| # module |
| self.check_sizeof(unittest, size(h + '3P')) |
| # range |
| self.check_sizeof(range(1), size(h + '3P')) |
| # slice |
| self.check_sizeof(slice(0), size(h + '3P')) |
| |
| h += 'P' |
| # bool |
| self.check_sizeof(True, size(h + 'H')) |
| # new-style class |
| class class_newstyle(object): |
| def method(): |
| pass |
| # type (PyTypeObject + PyNumberMethods + PyMappingMethods + |
| # PySequenceMethods + PyBufferProcs) |
| self.check_sizeof(class_newstyle, size(h + 'P2P15Pl4PP9PP11PI') +\ |
| size('16Pi17P 3P 10P 2P 2P')) |
| |
| def test_specialtypes(self): |
| h = self.header |
| size = self.calcsize |
| # dict |
| self.check_sizeof({}, size(h + '3P2P') + 8*size('P2P')) |
| longdict = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8} |
| self.check_sizeof(longdict, size(h + '3P2P') + (8+16)*size('P2P')) |
| # 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) |
| defenc = bytes(s, 'ascii') |
| self.check_sizeof(s, basicsize, |
| size2=basicsize + sys.getsizeof(defenc)) |
| # trigger caching encoded version as bytes object |
| try: |
| getattr(sys, s) |
| except AttributeError: |
| pass |
| finally: |
| self.check_sizeof(s, basicsize + sys.getsizeof(defenc)) |
| |
| h += 'P' |
| # list |
| self.check_sizeof([], size(h + 'PP')) |
| self.check_sizeof([1, 2, 3], size(h + 'PP') + 3*self.P) |
| # long |
| self.check_sizeof(0, size(h + 'H')) |
| self.check_sizeof(1, size(h + 'H')) |
| self.check_sizeof(-1, size(h + 'H')) |
| self.check_sizeof(32768, size(h + 'H') + self.H) |
| self.check_sizeof(32768*32768-1, size(h + 'H') + self.H) |
| self.check_sizeof(32768*32768, size(h + 'H') + 2*self.H) |
| # tuple |
| self.check_sizeof((), size(h)) |
| self.check_sizeof((1,2,3), size(h) + 3*self.P) |
| |
| |
| def test_main(): |
| test.support.run_unittest(SysModuleTest, SizeofTest) |
| |
| if __name__ == "__main__": |
| test_main() |