diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_exceptions.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-2.6.1/Lib/test/test_exceptions.py Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,397 @@ +# Python test set -- part 5, built-in exceptions + +import os +import sys +import unittest +import pickle, cPickle +import warnings + +from test.test_support import TESTFN, unlink, run_unittest, captured_output +from test.test_pep352 import ignore_message_warning + +# XXX This is not really enough, each *operation* should be tested! + +class ExceptionTests(unittest.TestCase): + + def testReload(self): + # Reloading the built-in exceptions module failed prior to Py2.2, while it + # should act the same as reloading built-in sys. + try: + import exceptions + reload(exceptions) + except ImportError, e: + self.fail("reloading exceptions: %s" % e) + + def raise_catch(self, exc, excname): + try: + raise exc, "spam" + except exc, err: + buf1 = str(err) + try: + raise exc("spam") + except exc, err: + buf2 = str(err) + self.assertEquals(buf1, buf2) + self.assertEquals(exc.__name__, excname) + + def testRaising(self): + self.raise_catch(AttributeError, "AttributeError") + self.assertRaises(AttributeError, getattr, sys, "undefined_attribute") + + self.raise_catch(EOFError, "EOFError") + fp = open(TESTFN, 'w') + fp.close() + fp = open(TESTFN, 'r') + savestdin = sys.stdin + try: + try: + sys.stdin = fp + x = raw_input() + except EOFError: + pass + finally: + sys.stdin = savestdin + fp.close() + unlink(TESTFN) + + self.raise_catch(IOError, "IOError") + self.assertRaises(IOError, open, 'this file does not exist', 'r') + + self.raise_catch(ImportError, "ImportError") + self.assertRaises(ImportError, __import__, "undefined_module") + + self.raise_catch(IndexError, "IndexError") + x = [] + self.assertRaises(IndexError, x.__getitem__, 10) + + self.raise_catch(KeyError, "KeyError") + x = {} + self.assertRaises(KeyError, x.__getitem__, 'key') + + self.raise_catch(KeyboardInterrupt, "KeyboardInterrupt") + + self.raise_catch(MemoryError, "MemoryError") + + self.raise_catch(NameError, "NameError") + try: x = undefined_variable + except NameError: pass + + self.raise_catch(OverflowError, "OverflowError") + x = 1 + for dummy in range(128): + x += x # this simply shouldn't blow up + + self.raise_catch(RuntimeError, "RuntimeError") + + self.raise_catch(SyntaxError, "SyntaxError") + try: exec '/\n' + except SyntaxError: pass + + self.raise_catch(IndentationError, "IndentationError") + + self.raise_catch(TabError, "TabError") + # can only be tested under -tt, and is the only test for -tt + #try: compile("try:\n\t1/0\n \t1/0\nfinally:\n pass\n", '', 'exec') + #except TabError: pass + #else: self.fail("TabError not raised") + + self.raise_catch(SystemError, "SystemError") + + self.raise_catch(SystemExit, "SystemExit") + self.assertRaises(SystemExit, sys.exit, 0) + + self.raise_catch(TypeError, "TypeError") + try: [] + () + except TypeError: pass + + self.raise_catch(ValueError, "ValueError") + self.assertRaises(ValueError, chr, 10000) + + self.raise_catch(ZeroDivisionError, "ZeroDivisionError") + try: x = 1/0 + except ZeroDivisionError: pass + + self.raise_catch(Exception, "Exception") + try: x = 1/0 + except Exception, e: pass + + def testSyntaxErrorMessage(self): + # make sure the right exception message is raised for each of + # these code fragments + + def ckmsg(src, msg): + try: + compile(src, '', 'exec') + except SyntaxError, e: + if e.msg != msg: + self.fail("expected %s, got %s" % (msg, e.msg)) + else: + self.fail("failed to get expected SyntaxError") + + s = '''while 1: + try: + pass + finally: + continue''' + + if not sys.platform.startswith('java'): + ckmsg(s, "'continue' not supported inside 'finally' clause") + + s = '''if 1: + try: + continue + except: + pass''' + + ckmsg(s, "'continue' not properly in loop") + ckmsg("continue\n", "'continue' not properly in loop") + + def testSettingException(self): + # test that setting an exception at the C level works even if the + # exception object can't be constructed. + + class BadException: + def __init__(self_): + raise RuntimeError, "can't instantiate BadException" + + def test_capi1(): + import _testcapi + try: + _testcapi.raise_exception(BadException, 1) + except TypeError, err: + exc, err, tb = sys.exc_info() + co = tb.tb_frame.f_code + self.assertEquals(co.co_name, "test_capi1") + self.assert_(co.co_filename.endswith('test_exceptions'+os.extsep+'py')) + else: + self.fail("Expected exception") + + def test_capi2(): + import _testcapi + try: + _testcapi.raise_exception(BadException, 0) + except RuntimeError, err: + exc, err, tb = sys.exc_info() + co = tb.tb_frame.f_code + self.assertEquals(co.co_name, "__init__") + self.assert_(co.co_filename.endswith('test_exceptions'+os.extsep+'py')) + co2 = tb.tb_frame.f_back.f_code + self.assertEquals(co2.co_name, "test_capi2") + else: + self.fail("Expected exception") + + if not sys.platform.startswith('java'): + test_capi1() + test_capi2() + + def test_WindowsError(self): + try: + WindowsError + except NameError: + pass + else: + self.failUnlessEqual(str(WindowsError(1001)), + "1001") + self.failUnlessEqual(str(WindowsError(1001, "message")), + "[Error 1001] message") + self.failUnlessEqual(WindowsError(1001, "message").errno, 22) + self.failUnlessEqual(WindowsError(1001, "message").winerror, 1001) + + def testAttributes(self): + # test that exception attributes are happy + + exceptionList = [ + (BaseException, (), {'message' : '', 'args' : ()}), + (BaseException, (1, ), {'message' : 1, 'args' : (1,)}), + (BaseException, ('foo',), + {'message' : 'foo', 'args' : ('foo',)}), + (BaseException, ('foo', 1), + {'message' : '', 'args' : ('foo', 1)}), + (SystemExit, ('foo',), + {'message' : 'foo', 'args' : ('foo',), 'code' : 'foo'}), + (IOError, ('foo',), + {'message' : 'foo', 'args' : ('foo',), 'filename' : None, + 'errno' : None, 'strerror' : None}), + (IOError, ('foo', 'bar'), + {'message' : '', 'args' : ('foo', 'bar'), 'filename' : None, + 'errno' : 'foo', 'strerror' : 'bar'}), + (IOError, ('foo', 'bar', 'baz'), + {'message' : '', 'args' : ('foo', 'bar'), 'filename' : 'baz', + 'errno' : 'foo', 'strerror' : 'bar'}), + (IOError, ('foo', 'bar', 'baz', 'quux'), + {'message' : '', 'args' : ('foo', 'bar', 'baz', 'quux')}), + (EnvironmentError, ('errnoStr', 'strErrorStr', 'filenameStr'), + {'message' : '', 'args' : ('errnoStr', 'strErrorStr'), + 'strerror' : 'strErrorStr', 'errno' : 'errnoStr', + 'filename' : 'filenameStr'}), + (EnvironmentError, (1, 'strErrorStr', 'filenameStr'), + {'message' : '', 'args' : (1, 'strErrorStr'), 'errno' : 1, + 'strerror' : 'strErrorStr', 'filename' : 'filenameStr'}), + (SyntaxError, (), {'message' : '', 'msg' : None, 'text' : None, + 'filename' : None, 'lineno' : None, 'offset' : None, + 'print_file_and_line' : None}), + (SyntaxError, ('msgStr',), + {'message' : 'msgStr', 'args' : ('msgStr',), 'text' : None, + 'print_file_and_line' : None, 'msg' : 'msgStr', + 'filename' : None, 'lineno' : None, 'offset' : None}), + (SyntaxError, ('msgStr', ('filenameStr', 'linenoStr', 'offsetStr', + 'textStr')), + {'message' : '', 'offset' : 'offsetStr', 'text' : 'textStr', + 'args' : ('msgStr', ('filenameStr', 'linenoStr', + 'offsetStr', 'textStr')), + 'print_file_and_line' : None, 'msg' : 'msgStr', + 'filename' : 'filenameStr', 'lineno' : 'linenoStr'}), + (SyntaxError, ('msgStr', 'filenameStr', 'linenoStr', 'offsetStr', + 'textStr', 'print_file_and_lineStr'), + {'message' : '', 'text' : None, + 'args' : ('msgStr', 'filenameStr', 'linenoStr', 'offsetStr', + 'textStr', 'print_file_and_lineStr'), + 'print_file_and_line' : None, 'msg' : 'msgStr', + 'filename' : None, 'lineno' : None, 'offset' : None}), + (UnicodeError, (), {'message' : '', 'args' : (),}), + (UnicodeEncodeError, ('ascii', u'a', 0, 1, 'ordinal not in range'), + {'message' : '', 'args' : ('ascii', u'a', 0, 1, + 'ordinal not in range'), + 'encoding' : 'ascii', 'object' : u'a', + 'start' : 0, 'reason' : 'ordinal not in range'}), + (UnicodeDecodeError, ('ascii', '\xff', 0, 1, 'ordinal not in range'), + {'message' : '', 'args' : ('ascii', '\xff', 0, 1, + 'ordinal not in range'), + 'encoding' : 'ascii', 'object' : '\xff', + 'start' : 0, 'reason' : 'ordinal not in range'}), + (UnicodeTranslateError, (u"\u3042", 0, 1, "ouch"), + {'message' : '', 'args' : (u'\u3042', 0, 1, 'ouch'), + 'object' : u'\u3042', 'reason' : 'ouch', + 'start' : 0, 'end' : 1}), + ] + try: + exceptionList.append( + (WindowsError, (1, 'strErrorStr', 'filenameStr'), + {'message' : '', 'args' : (1, 'strErrorStr'), + 'strerror' : 'strErrorStr', 'winerror' : 1, + 'errno' : 22, 'filename' : 'filenameStr'}) + ) + except NameError: + pass + + with warnings.catch_warnings(): + ignore_message_warning() + for exc, args, expected in exceptionList: + try: + raise exc(*args) + except BaseException, e: + if type(e) is not exc: + raise + # Verify module name + self.assertEquals(type(e).__module__, 'exceptions') + # Verify no ref leaks in Exc_str() + s = str(e) + for checkArgName in expected: + self.assertEquals(repr(getattr(e, checkArgName)), + repr(expected[checkArgName]), + 'exception "%s", attribute "%s"' % + (repr(e), checkArgName)) + + # test for pickling support + for p in pickle, cPickle: + for protocol in range(p.HIGHEST_PROTOCOL + 1): + new = p.loads(p.dumps(e, protocol)) + for checkArgName in expected: + got = repr(getattr(new, checkArgName)) + want = repr(expected[checkArgName]) + self.assertEquals(got, want, + 'pickled "%r", attribute "%s"' % + (e, checkArgName)) + + def testSlicing(self): + # Test that you can slice an exception directly instead of requiring + # going through the 'args' attribute. + args = (1, 2, 3) + exc = BaseException(*args) + self.failUnlessEqual(exc[:], args) + + def testKeywordArgs(self): + # test that builtin exception don't take keyword args, + # but user-defined subclasses can if they want + self.assertRaises(TypeError, BaseException, a=1) + + class DerivedException(BaseException): + def __init__(self, fancy_arg): + BaseException.__init__(self) + self.fancy_arg = fancy_arg + + x = DerivedException(fancy_arg=42) + self.assertEquals(x.fancy_arg, 42) + + def testInfiniteRecursion(self): + def f(): + return f() + self.assertRaises(RuntimeError, f) + + def g(): + try: + return g() + except ValueError: + return -1 + + # The test prints an unraisable recursion error when + # doing "except ValueError", this is because subclass + # checking has recursion checking too. + with captured_output("stderr"): + try: + g() + except RuntimeError: + pass + except: + self.fail("Should have raised KeyError") + else: + self.fail("Should have raised KeyError") + + def testUnicodeStrUsage(self): + # Make sure both instances and classes have a str and unicode + # representation. + self.failUnless(str(Exception)) + self.failUnless(unicode(Exception)) + self.failUnless(str(Exception('a'))) + self.failUnless(unicode(Exception(u'a'))) + self.failUnless(unicode(Exception(u'\xe1'))) + + def test_badisinstance(self): + # Bug #2542: if issubclass(e, MyException) raises an exception, + # it should be ignored + class Meta(type): + def __subclasscheck__(cls, subclass): + raise ValueError() + + class MyException(Exception): + __metaclass__ = Meta + pass + + with captured_output("stderr") as stderr: + try: + raise KeyError() + except MyException, e: + self.fail("exception should not be a MyException") + except KeyError: + pass + except: + self.fail("Should have raised KeyError") + else: + self.fail("Should have raised KeyError") + + with captured_output("stderr") as stderr: + def g(): + try: + return g() + except RuntimeError: + return sys.exc_info() + e, v, tb = g() + self.assert_(e is RuntimeError, e) + self.assert_("maximum recursion depth exceeded" in str(v), v) + + +def test_main(): + run_unittest(ExceptionTests) + +if __name__ == '__main__': + test_main()