test_cookielib.py 文件源码

def test_bad_magic(self):
        from cookielib import LWPCookieJar, MozillaCookieJar, LoadError
        # IOErrors (eg. file doesn't exist) are allowed to propagate
        filename = test_support.TESTFN
        for cookiejar_class in LWPCookieJar, MozillaCookieJar:
            c = cookiejar_class()
            try:
                c.load(filename="for this test to work, a file with this "
                                "filename should not exist")
            except IOError, exc:
                # exactly IOError, not LoadError
                self.assertEqual(exc.__class__, IOError)
            else:
                self.fail("expected IOError for invalid filename")
        # Invalid contents of cookies file (eg. bad magic string)
        # causes a LoadError.
        try:
            f = open(filename, "w")
            f.write("oops\n")
            for cookiejar_class in LWPCookieJar, MozillaCookieJar:
                c = cookiejar_class()
                self.assertRaises(LoadError, c.load, filename)
        finally:
            try: os.unlink(filename)
            except OSError: pass