| # -*- coding: iso-8859-1 -*- |
| import unittest, test.test_support |
| import sys, cStringIO |
| |
| class SysModuleTest(unittest.TestCase): |
| |
| def test_original_displayhook(self): |
| import __builtin__ |
| savestdout = sys.stdout |
| out = cStringIO.StringIO() |
| sys.stdout = out |
| |
| dh = sys.__displayhook__ |
| |
| self.assertRaises(TypeError, dh) |
| if hasattr(__builtin__, "_"): |
| del __builtin__._ |
| |
| dh(None) |
| self.assertEqual(out.getvalue(), "") |
| self.assert_(not hasattr(__builtin__, "_")) |
| dh(42) |
| self.assertEqual(out.getvalue(), "42\n") |
| self.assertEqual(__builtin__._, 42) |
| |
| del sys.stdout |
| self.assertRaises(RuntimeError, dh, 42) |
| |
| sys.stdout = savestdout |
| |
| def test_lost_displayhook(self): |
| olddisplayhook = sys.displayhook |
| del sys.displayhook |
| code = compile("42", "<string>", "single") |
| self.assertRaises(RuntimeError, eval, code) |
| sys.displayhook = olddisplayhook |
| |
| def test_custom_displayhook(self): |
| olddisplayhook = sys.displayhook |
| def baddisplayhook(obj): |
| raise ValueError |
| sys.displayhook = baddisplayhook |
| code = compile("42", "<string>", "single") |
| self.assertRaises(ValueError, eval, code) |
| sys.displayhook = olddisplayhook |
| |
| def test_original_excepthook(self): |
| savestderr = sys.stderr |
| err = cStringIO.StringIO() |
| sys.stderr = err |
| |
| eh = sys.__excepthook__ |
| |
| self.assertRaises(TypeError, eh) |
| try: |
| raise ValueError(42) |
| except ValueError, exc: |
| eh(*sys.exc_info()) |
| |
| sys.stderr = savestderr |
| 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_exc_clear(self): |
| self.assertRaises(TypeError, sys.exc_clear, 42) |
| |
| # Verify that exc_info is present and matches exc, then clear it, and |
| # check that it worked. |
| def clear_check(exc): |
| typ, value, traceback = sys.exc_info() |
| self.assert_(typ is not None) |
| self.assert_(value is exc) |
| self.assert_(traceback is not None) |
| |
| sys.exc_clear() |
| |
| typ, value, traceback = sys.exc_info() |
| self.assert_(typ is None) |
| self.assert_(value is None) |
| self.assert_(traceback is None) |
| |
| def clear(): |
| try: |
| raise ValueError, 42 |
| except ValueError, exc: |
| clear_check(exc) |
| |
| # Raise an exception and check that it can be cleared |
| clear() |
| |
| # Verify that a frame currently handling an exception is |
| # unaffected by calling exc_clear in a nested frame. |
| try: |
| raise ValueError, 13 |
| except ValueError, exc: |
| typ1, value1, traceback1 = sys.exc_info() |
| clear() |
| typ2, value2, traceback2 = sys.exc_info() |
| |
| self.assert_(typ1 is typ2) |
| self.assert_(value1 is exc) |
| self.assert_(value1 is value2) |
| self.assert_(traceback1 is traceback2) |
| |
| # Check that an exception can be cleared outside of an except block |
| clear_check(exc) |
| |
| def test_exit(self): |
| self.assertRaises(TypeError, sys.exit, 42, 42) |
| |
| # call without argument |
| try: |
| sys.exit(0) |
| except SystemExit, 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, 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, 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, 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, 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 |
| # both unnormalized... |
| rc = subprocess.call([sys.executable, "-c", |
| "raise SystemExit, 46"]) |
| self.assertEqual(rc, 46) |
| # ... and normalized |
| rc = subprocess.call([sys.executable, "-c", |
| "raise SystemExit(47)"]) |
| self.assertEqual(rc, 47) |
| |
| |
| def test_getdefaultencoding(self): |
| if test.test_support.have_unicode: |
| 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.im_func.func_code \ |
| is sys._getframe().f_code |
| ) |
| |
| 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, basestring)) |
| self.assert_(isinstance(sys.exec_prefix, basestring)) |
| self.assert_(isinstance(sys.executable, basestring)) |
| self.assert_(isinstance(sys.hexversion, int)) |
| self.assert_(isinstance(sys.maxint, int)) |
| if test.test_support.have_unicode: |
| self.assert_(isinstance(sys.maxunicode, int)) |
| self.assert_(isinstance(sys.platform, basestring)) |
| self.assert_(isinstance(sys.prefix, basestring)) |
| self.assert_(isinstance(sys.version, basestring)) |
| 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 cStringIO object when |
| # the test runs under regrtest. |
| self.assert_(sys.__stdout__.encoding == sys.__stderr__.encoding) |
| |
| def test_main(): |
| test.test_support.run_unittest(SysModuleTest) |
| |
| if __name__ == "__main__": |
| test_main() |