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ede049b2d3
Add raise_exception() to the _testcapi module. It isn't a test, but the C API exists only to support test_exceptions. raise_exception() takes two arguments -- an exception class and an integer specifying how many arguments it should be called with. test_exceptions uses BadException() to test the interpreter's behavior when there is a problem instantiating the exception. test_capi1() calls it with too many arguments. test_capi2() causes an exception to be raised in the Python code of the constructor.
199 lines
3.9 KiB
Python
199 lines
3.9 KiB
Python
# Python test set -- part 5, built-in exceptions
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from test_support import *
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from types import ClassType
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import warnings
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import sys, traceback
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import _testcapi
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warnings.filterwarnings("error", "", OverflowWarning, __name__)
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print '5. Built-in exceptions'
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# XXX This is not really enough, each *operation* should be tested!
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# Reloading the built-in exceptions module failed prior to Py2.2, while it
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# should act the same as reloading built-in sys.
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try:
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import exceptions
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reload(exceptions)
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except ImportError, e:
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raise TestFailed, e
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def test_raise_catch(exc):
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try:
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raise exc, "spam"
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except exc, err:
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buf = str(err)
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try:
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raise exc("spam")
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except exc, err:
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buf = str(err)
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print buf
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def r(thing):
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test_raise_catch(thing)
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if isinstance(thing, ClassType):
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print thing.__name__
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else:
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print thing
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r(AttributeError)
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import sys
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try: x = sys.undefined_attribute
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except AttributeError: pass
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r(EOFError)
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import sys
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fp = open(TESTFN, 'w')
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fp.close()
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fp = open(TESTFN, 'r')
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savestdin = sys.stdin
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try:
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try:
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sys.stdin = fp
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x = raw_input()
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except EOFError:
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pass
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finally:
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sys.stdin = savestdin
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fp.close()
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r(IOError)
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try: open('this file does not exist', 'r')
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except IOError: pass
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r(ImportError)
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try: import undefined_module
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except ImportError: pass
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r(IndexError)
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x = []
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try: a = x[10]
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except IndexError: pass
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r(KeyError)
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x = {}
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try: a = x['key']
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except KeyError: pass
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r(KeyboardInterrupt)
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print '(not testable in a script)'
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r(MemoryError)
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print '(not safe to test)'
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r(NameError)
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try: x = undefined_variable
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except NameError: pass
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r(OverflowError)
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x = 1
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try:
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while 1: x = x+x
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except OverflowError: pass
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r(RuntimeError)
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print '(not used any more?)'
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r(SyntaxError)
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try: exec '/\n'
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except SyntaxError: pass
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# make sure the right exception message is raised for each of these
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# code fragments:
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def ckmsg(src, msg):
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try:
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compile(src, '<fragment>', 'exec')
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except SyntaxError, e:
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print e.msg
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if e.msg == msg:
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print "ok"
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else:
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print "expected:", msg
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else:
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print "failed to get expected SyntaxError"
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s = '''\
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while 1:
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try:
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pass
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finally:
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continue
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'''
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ckmsg(s, "'continue' not supported inside 'finally' clause")
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s = '''\
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try:
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continue
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except:
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pass
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'''
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ckmsg(s, "'continue' not properly in loop")
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ckmsg("continue\n", "'continue' not properly in loop")
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r(IndentationError)
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r(TabError)
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# can only be tested under -tt, and is the only test for -tt
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#try: compile("try:\n\t1/0\n \t1/0\nfinally:\n pass\n", '<string>', 'exec')
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#except TabError: pass
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#else: raise TestFailed
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r(SystemError)
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print '(hard to reproduce)'
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r(SystemExit)
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import sys
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try: sys.exit(0)
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except SystemExit: pass
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r(TypeError)
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try: [] + ()
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except TypeError: pass
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r(ValueError)
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try: x = chr(10000)
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except ValueError: pass
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r(ZeroDivisionError)
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try: x = 1/0
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except ZeroDivisionError: pass
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r(Exception)
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try: x = 1/0
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except Exception, e: pass
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# test that setting an exception at the C level works even if the
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# exception object can't be constructed.
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class BadException:
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def __init__(self):
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raise RuntimeError, "can't instantiate BadException"
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def test_capi1():
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try:
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_testcapi.raise_exception(BadException, 1)
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except TypeError, err:
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exc, err, tb = sys.exc_info()
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co = tb.tb_frame.f_code
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assert co.co_name == "test_capi1"
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assert co.co_filename.endswith('test_exceptions.py')
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else:
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print "Expected exception"
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test_capi1()
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def test_capi2():
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try:
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_testcapi.raise_exception(BadException, 0)
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except RuntimeError, err:
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exc, err, tb = sys.exc_info()
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co = tb.tb_frame.f_code
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assert co.co_name == "__init__"
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assert co.co_filename.endswith('test_exceptions.py')
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co2 = tb.tb_frame.f_back.f_code
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assert co2.co_name == "test_capi2"
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else:
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print "Expected exception"
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test_capi2()
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unlink(TESTFN)
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