mirror of https://github.com/python/cpython
Convert test_exceptions to unittest.
This commit is contained in:
Georg Brandl
parent
b0432bc032
commit
cdcede62c0
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@ -1,52 +0,0 @@
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test_exceptions
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5. Built-in exceptions
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spam
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AttributeError
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spam
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EOFError
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spam
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IOError
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spam
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ImportError
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spam
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IndexError
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'spam'
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KeyError
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spam
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KeyboardInterrupt
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(not testable in a script)
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spam
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MemoryError
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(not safe to test)
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spam
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NameError
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spam
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OverflowError
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spam
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RuntimeError
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(not used any more?)
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spam
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SyntaxError
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'continue' not supported inside 'finally' clause
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ok
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'continue' not properly in loop
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ok
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'continue' not properly in loop
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ok
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spam
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IndentationError
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spam
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TabError
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spam
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SystemError
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(hard to reproduce)
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spam
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SystemExit
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spam
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TypeError
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spam
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ValueError
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spam
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ZeroDivisionError
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spam
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Exception
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@ -1,43 +1,40 @@
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# Python test set -- part 5, built-in exceptions
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from test.test_support import TestFailed, TESTFN, unlink
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from types import ClassType
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from test.test_support import TESTFN, unlink, run_unittest
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import warnings
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import sys, traceback, os
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import unittest
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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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class ExceptionTests(unittest.TestCase):
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def testReload(self):
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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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self.fail("reloading exceptions: %s" % e)
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def test_raise_catch(exc):
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def raise_catch(self, exc, excname):
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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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buf1 = 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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buf2 = str(err)
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self.assertEquals(buf1, buf2)
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self.assertEquals(exc.__name__, excname)
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def r(thing):
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test_raise_catch(thing)
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print getattr(thing, '__name__', thing)
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def testRaising(self):
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self.raise_catch(AttributeError, "AttributeError")
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self.assertRaises(AttributeError, getattr, sys, "undefined_attribute")
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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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self.raise_catch(EOFError, "EOFError")
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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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@ -51,120 +48,106 @@ try:
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finally:
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sys.stdin = savestdin
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fp.close()
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unlink(TESTFN)
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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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self.raise_catch(IOError, "IOError")
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self.assertRaises(IOError, open, 'this file does not exist', 'r')
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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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self.raise_catch(ImportError, "ImportError")
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self.assertRaises(ImportError, __import__, "undefined_module")
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r(IndexError)
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self.raise_catch(IndexError, "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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self.assertRaises(IndexError, x.__getitem__, 10)
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r(KeyError)
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self.raise_catch(KeyError, "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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self.assertRaises(KeyError, x.__getitem__, 'key')
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r(KeyboardInterrupt)
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print '(not testable in a script)'
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self.raise_catch(KeyboardInterrupt, "KeyboardInterrupt")
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r(MemoryError)
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print '(not safe to test)'
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self.raise_catch(MemoryError, "MemoryError")
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r(NameError)
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self.raise_catch(NameError, "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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self.raise_catch(OverflowError, "OverflowError")
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x = 1
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for dummy in range(128):
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x += x # this simply shouldn't blow up
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r(RuntimeError)
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print '(not used any more?)'
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self.raise_catch(RuntimeError, "RuntimeError")
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r(SyntaxError)
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self.raise_catch(SyntaxError, "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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self.raise_catch(IndentationError, "IndentationError")
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self.raise_catch(TabError, "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: self.fail("TabError not raised")
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self.raise_catch(SystemError, "SystemError")
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self.raise_catch(SystemExit, "SystemExit")
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self.assertRaises(SystemExit, sys.exit, 0)
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self.raise_catch(TypeError, "TypeError")
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try: [] + ()
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except TypeError: pass
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self.raise_catch(ValueError, "ValueError")
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self.assertRaises(ValueError, chr, 10000)
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self.raise_catch(ZeroDivisionError, "ZeroDivisionError")
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try: x = 1/0
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except ZeroDivisionError: pass
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self.raise_catch(Exception, "Exception")
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try: x = 1/0
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except Exception, e: pass
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def testSyntaxErrorMessage(self):
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"""make sure the right exception message is raised for each of
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these 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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if e.msg != msg:
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self.fail("expected %s, got %s" % (msg, e.msg))
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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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self.fail("failed to get expected SyntaxError")
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s = '''\
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while 1:
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s = '''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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if sys.platform.startswith('java'):
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print "'continue' not supported inside 'finally' clause"
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print "ok"
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else:
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continue'''
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if not sys.platform.startswith('java'):
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ckmsg(s, "'continue' not supported inside 'finally' clause")
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s = '''\
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s = '''if 1:
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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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pass'''
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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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def testSettingException(self):
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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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def __init__(self_):
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raise RuntimeError, "can't instantiate BadException"
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def test_capi1():
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@ -174,10 +157,10 @@ def test_capi1():
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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'+os.extsep+'py')
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self.assertEquals(co.co_name, "test_capi1")
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self.assert_(co.co_filename.endswith('test_exceptions'+os.extsep+'py'))
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else:
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print "Expected exception"
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self.fail("Expected exception")
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def test_capi2():
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import _testcapi
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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'+os.extsep+'py')
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self.assertEquals(co.co_name, "__init__")
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self.assert_(co.co_filename.endswith('test_exceptions'+os.extsep+'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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self.assertEquals(co2.co_name, "test_capi2")
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else:
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print "Expected exception"
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self.fail("Expected exception")
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if not sys.platform.startswith('java'):
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test_capi1()
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test_capi2()
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unlink(TESTFN)
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# test that exception attributes are happy.
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def testAttributes(self):
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"""test that exception attributes are happy."""
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try: str(u'Hello \u00E1')
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except Exception, e: sampleUnicodeEncodeError = e
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try: unicode('\xff')
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except Exception, e: sampleUnicodeDecodeError = e
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exceptionList = [
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( BaseException, (), { 'message' : '', 'args' : () }),
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( BaseException, (1, ), { 'message' : 1, 'args' : ( 1, ) }),
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@ -279,27 +263,33 @@ for args in exceptionList:
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else: raise apply(args[0], args[1])
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except BaseException, e:
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for checkArgName in expected.keys():
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if repr(getattr(e, checkArgName)) != repr(expected[checkArgName]):
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raise TestFailed('Checking exception arguments, exception '
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'"%s", attribute "%s" expected %s got %s.' %
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( repr(e), checkArgName,
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self.assertEquals(repr(getattr(e, checkArgName)),
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repr(expected[checkArgName]),
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repr(getattr(e, checkArgName)) ))
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'exception "%s", attribute "%s"' %
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(repr(e), checkArgName))
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# test for pickling support
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new = pickle.loads(pickle.dumps(e, random.randint(0, 2)))
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for checkArgName in expected.keys():
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if repr(getattr(e, checkArgName)) != repr(expected[checkArgName]):
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raise TestFailed('Checking unpickled exception arguments, '
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'exception '
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'"%s", attribute "%s" expected %s got %s.' %
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( repr(e), checkArgName,
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self.assertEquals(repr(getattr(e, checkArgName)),
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repr(expected[checkArgName]),
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repr(getattr(e, checkArgName)) ))
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'pickled exception "%s", attribute "%s' %
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(repr(e), checkArgName))
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try:
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BaseException(a=1)
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except TypeError:
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pass
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else:
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raise TestFailed("BaseException shouldn't take keyword args")
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def testKeywordArgs(self):
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"""test that builtin exception don't take keyword args,
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but user-defined subclasses can if they want"""
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self.assertRaises(TypeError, BaseException, a=1)
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class DerivedException(BaseException):
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def __init__(self, fancy_arg):
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BaseException.__init__(self)
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self.fancy_arg = fancy_arg
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x = DerivedException(fancy_arg=42)
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self.assertEquals(x.fancy_arg, 42)
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def test_main():
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run_unittest(ExceptionTests)
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if __name__ == '__main__':
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test_main()
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