# Python test set -- part 5, built-in exceptions from test.test_support import TestFailed, TESTFN, unlink from types import ClassType import warnings import sys, traceback, os print '5. Built-in exceptions' # XXX This is not really enough, each *operation* should be tested! # 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: raise TestFailed, e def test_raise_catch(exc): try: raise exc, "spam" except exc, err: buf = str(err) try: raise exc("spam") except exc, err: buf = str(err) print buf def r(thing): test_raise_catch(thing) print getattr(thing, '__name__', thing) r(AttributeError) import sys try: x = sys.undefined_attribute except AttributeError: pass r(EOFError) import sys 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() r(IOError) try: open('this file does not exist', 'r') except IOError: pass r(ImportError) try: import undefined_module except ImportError: pass r(IndexError) x = [] try: a = x[10] except IndexError: pass r(KeyError) x = {} try: a = x['key'] except KeyError: pass r(KeyboardInterrupt) print '(not testable in a script)' r(MemoryError) print '(not safe to test)' r(NameError) try: x = undefined_variable except NameError: pass r(OverflowError) x = 1 for dummy in range(128): x += x # this simply shouldn't blow up r(RuntimeError) print '(not used any more?)' r(SyntaxError) try: exec '/\n' except SyntaxError: pass # 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: print e.msg if e.msg == msg: print "ok" else: print "expected:", msg else: print "failed to get expected SyntaxError" s = '''\ while 1: try: pass finally: continue ''' if sys.platform.startswith('java'): print "'continue' not supported inside 'finally' clause" print "ok" else: ckmsg(s, "'continue' not supported inside 'finally' clause") s = '''\ try: continue except: pass ''' ckmsg(s, "'continue' not properly in loop") ckmsg("continue\n", "'continue' not properly in loop") r(IndentationError) r(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: raise TestFailed r(SystemError) print '(hard to reproduce)' r(SystemExit) import sys try: sys.exit(0) except SystemExit: pass r(TypeError) try: [] + () except TypeError: pass r(ValueError) try: x = chr(10000) except ValueError: pass r(ZeroDivisionError) try: x = 1/0 except ZeroDivisionError: pass r(Exception) try: x = 1/0 except Exception, e: pass # 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 assert co.co_name == "test_capi1" assert co.co_filename.endswith('test_exceptions'+os.extsep+'py') else: print "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 assert co.co_name == "__init__" assert co.co_filename.endswith('test_exceptions'+os.extsep+'py') co2 = tb.tb_frame.f_back.f_code assert co2.co_name == "test_capi2" else: print "Expected exception" if not sys.platform.startswith('java'): test_capi1() test_capi2() unlink(TESTFN) # test that exception attributes are happy. try: str(u'Hello \u00E1') except Exception, e: sampleUnicodeEncodeError = e try: unicode('\xff') except Exception, e: sampleUnicodeDecodeError = e 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', ), }), ( IOError, ('foo', 'bar'), { 'message' : '', 'args' : ('foo', 'bar'), }), ( IOError, ('foo', 'bar', 'baz'), { 'message' : '', 'args' : ('foo', 'bar'), }), ( EnvironmentError, ('errnoStr', 'strErrorStr', 'filenameStr'), { 'message' : '', 'args' : ('errnoStr', 'strErrorStr'), 'strerror' : 'strErrorStr', 'errno' : 'errnoStr', 'filename' : 'filenameStr' }), ( EnvironmentError, (1, 'strErrorStr', 'filenameStr'), { 'message' : '', 'args' : (1, 'strErrorStr'), 'strerror' : 'strErrorStr', 'errno' : 1, 'filename' : 'filenameStr' }), ( SyntaxError, ('msgStr',), { 'message' : 'msgStr', 'args' : ('msgStr', ), 'print_file_and_line' : None, 'msg' : 'msgStr', 'filename' : None, 'lineno' : None, 'offset' : None, 'text' : None }), ( SyntaxError, ('msgStr', ('filenameStr', 'linenoStr', 'offsetStr', 'textStr')), { 'message' : '', 'args' : ('msgStr', ('filenameStr', 'linenoStr', 'offsetStr', 'textStr' )), 'print_file_and_line' : None, 'msg' : 'msgStr', 'filename' : 'filenameStr', 'lineno' : 'linenoStr', 'offset' : 'offsetStr', 'text' : 'textStr' }), ( SyntaxError, ('msgStr', 'filenameStr', 'linenoStr', 'offsetStr', 'textStr', 'print_file_and_lineStr'), { 'message' : '', 'args' : ('msgStr', 'filenameStr', 'linenoStr', 'offsetStr', 'textStr', 'print_file_and_lineStr'), 'print_file_and_line' : None, 'msg' : 'msgStr', 'filename' : None, 'lineno' : None, 'offset' : None, 'text' : None }), ( UnicodeError, (), { 'message' : '', 'args' : (), }), ( sampleUnicodeEncodeError, { 'message' : '', 'args' : ('ascii', u'Hello \xe1', 6, 7, 'ordinal not in range(128)'), 'encoding' : 'ascii', 'object' : u'Hello \xe1', 'start' : 6, 'reason' : 'ordinal not in range(128)' }), ( sampleUnicodeDecodeError, { 'message' : '', 'args' : ('ascii', '\xff', 0, 1, 'ordinal not in range(128)'), 'encoding' : 'ascii', 'object' : '\xff', 'start' : 0, 'reason' : 'ordinal not in range(128)' }), ( 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', 'errno' : 22, 'filename' : 'filenameStr', 'winerror' : 1 })) except NameError: pass for args in exceptionList: expected = args[-1] try: if len(args) == 2: raise args[0] else: raise apply(args[0], args[1]) except BaseException, e: for checkArgName in expected.keys(): if repr(getattr(e, checkArgName)) != repr(expected[checkArgName]): raise TestFailed('Checking exception arguments, exception ' '"%s", attribute "%s" expected %s got %s.' % ( repr(e), checkArgName, repr(expected[checkArgName]), repr(getattr(e, checkArgName)) ))