Python test.test_support.check_warnings() Examples

def test_main():
    # Check the doctest cases in doctest itself:
    test_support.run_doctest(doctest, verbosity=True)

    from test import test_doctest

    # Ignore all warnings about the use of class Tester in this module.
    deprecations = []
    if __debug__:
        deprecations.append(("class Tester is deprecated", DeprecationWarning))
    if sys.py3kwarning:
        deprecations += [("backquote not supported", SyntaxWarning),
                         ("execfile.. not supported", DeprecationWarning)]
    with test_support.check_warnings(*deprecations):
        # Check the doctest cases defined here:
        test_support.run_doctest(test_doctest, verbosity=True) 

def test_main():
    # Check the doctest cases in doctest itself:
    test_support.run_doctest(doctest, verbosity=True)

    from test import test_doctest

    # Ignore all warnings about the use of class Tester in this module.
    deprecations = []
    if __debug__:
        deprecations.append(("class Tester is deprecated", DeprecationWarning))
    if sys.py3kwarning:
        deprecations += [("backquote not supported", SyntaxWarning),
                         ("execfile.. not supported", DeprecationWarning)]
    with test_support.check_warnings(*deprecations):
        # Check the doctest cases defined here:
        test_support.run_doctest(test_doctest, verbosity=True) 

def __init__(self, quiet=False):
        if sys.flags.optimize >= 2:
            # under -OO, doctests cannot be run and therefore not all warnings
            # will be emitted
            quiet = True
        deprecations = (
            # Search behaviour is broken if search path starts with "/".
            ("This search is broken in 1.3 and earlier, and will be fixed "
             "in a future version.  If you rely on the current behaviour, "
             "change it to '.+'", FutureWarning),
            # Element.getchildren() and Element.getiterator() are deprecated.
            ("This method will be removed in future versions.  "
             "Use .+ instead.", DeprecationWarning),
            ("This method will be removed in future versions.  "
             "Use .+ instead.", PendingDeprecationWarning),
            # XMLParser.doctype() is deprecated.
            ("This method of XMLParser is deprecated.  Define doctype.. "
             "method on the TreeBuilder target.", DeprecationWarning))
        self.checkwarnings = test_support.check_warnings(*deprecations,
                                                         quiet=quiet) 

def test_basic_auth_with_unquoted_realm(self):
        opener = OpenerDirector()
        password_manager = MockPasswordManager()
        auth_handler = urllib2.HTTPBasicAuthHandler(password_manager)
        realm = "ACME Widget Store"
        http_handler = MockHTTPHandler(
            401, 'WWW-Authenticate: Basic realm=%s\r\n\r\n' % realm)
        opener.add_handler(auth_handler)
        opener.add_handler(http_handler)
        msg = "Basic Auth Realm was unquoted"
        with test_support.check_warnings((msg, UserWarning)):
            self._test_basic_auth(opener, auth_handler, "Authorization",
                                  realm, http_handler, password_manager,
                                  "http://acme.example.com/protected",
                                  "http://acme.example.com/protected"
                                 ) 

def test_format(self):
        buf = create_string_buffer(' ' * 100)

        tests = [
            ('%f', 100.0),
            ('%g', 100.0),
            ('%#g', 100.0),
            ('%#.2g', 100.0),
            ('%#.2g', 123.4567),
            ('%#.2g', 1.234567e200),
            ('%e', 1.234567e200),
            ('%e', 1.234),
            ('%+e', 1.234),
            ('%-e', 1.234),
            ]

        with check_warnings(('PyOS_ascii_formatd is deprecated',
                             DeprecationWarning)):
            for format, val in tests:
                PyOS_ascii_formatd(byref(buf), sizeof(buf), format,
                                   c_double(val))
                self.assertEqual(buf.value, format % val) 

def check_all(self, modname):
        names = {}
        with support.check_warnings((".* (module|package)",
                                     DeprecationWarning), quiet=True):
            try:
                exec "import %s" % modname in names
            except:
                # Silent fail here seems the best route since some modules
                # may not be available or not initialize properly in all
                # environments.
                raise FailedImport(modname)
        if not hasattr(sys.modules[modname], "__all__"):
            raise NoAll(modname)
        names = {}
        try:
            exec "from %s import *" % modname in names
        except Exception as e:
            # Include the module name in the exception string
            self.fail("__all__ failure in {}: {}: {}".format(
                      modname, e.__class__.__name__, e))
        if "__builtins__" in names:
            del names["__builtins__"]
        keys = set(names)
        all = set(sys.modules[modname].__all__)
        self.assertEqual(keys, all) 

def test_format(self):
        buf = create_string_buffer(' ' * 100)

        tests = [
            ('%f', 100.0),
            ('%g', 100.0),
            ('%#g', 100.0),
            ('%#.2g', 100.0),
            ('%#.2g', 123.4567),
            ('%#.2g', 1.234567e200),
            ('%e', 1.234567e200),
            ('%e', 1.234),
            ('%+e', 1.234),
            ('%-e', 1.234),
            ]

        with check_warnings(('PyOS_ascii_formatd is deprecated',
                             DeprecationWarning)):
            for format, val in tests:
                PyOS_ascii_formatd(byref(buf), sizeof(buf), format,
                                   c_double(val))
                self.assertEqual(buf.value, format % val) 

def test_exclude(self):
        tempdir = os.path.join(TEMPDIR, "exclude")
        os.mkdir(tempdir)
        try:
            for name in ("foo", "bar", "baz"):
                name = os.path.join(tempdir, name)
                open(name, "wb").close()

            exclude = os.path.isfile

            tar = tarfile.open(tmpname, self.mode, encoding="iso8859-1")
            with test_support.check_warnings(("use the filter argument",
                                              DeprecationWarning)):
                tar.add(tempdir, arcname="empty_dir", exclude=exclude)
            tar.close()

            tar = tarfile.open(tmpname, "r")
            self.assertEqual(len(tar.getmembers()), 1)
            self.assertEqual(tar.getnames()[0], "empty_dir")
        finally:
            shutil.rmtree(tempdir) 

def test_basic_auth_with_unquoted_realm(self):
        opener = OpenerDirector()
        password_manager = MockPasswordManager()
        auth_handler = urllib2.HTTPBasicAuthHandler(password_manager)
        realm = "ACME Widget Store"
        http_handler = MockHTTPHandler(
            401, 'WWW-Authenticate: Basic realm=%s\r\n\r\n' % realm)
        opener.add_handler(auth_handler)
        opener.add_handler(http_handler)
        msg = "Basic Auth Realm was unquoted"
        with test_support.check_warnings((msg, UserWarning)):
            self._test_basic_auth(opener, auth_handler, "Authorization",
                                  realm, http_handler, password_manager,
                                  "http://acme.example.com/protected",
                                  "http://acme.example.com/protected"
                                 ) 

def check_all(self, modname):
        names = {}
        with support.check_warnings((".* (module|package)",
                                     DeprecationWarning), quiet=True):
            try:
                exec "import %s" % modname in names
            except:
                # Silent fail here seems the best route since some modules
                # may not be available or not initialize properly in all
                # environments.
                raise FailedImport(modname)
        if not hasattr(sys.modules[modname], "__all__"):
            raise NoAll(modname)
        names = {}
        try:
            exec "from %s import *" % modname in names
        except Exception as e:
            # Include the module name in the exception string
            self.fail("__all__ failure in {}: {}: {}".format(
                      modname, e.__class__.__name__, e))
        if "__builtins__" in names:
            del names["__builtins__"]
        keys = set(names)
        all = set(sys.modules[modname].__all__)
        self.assertEqual(keys, all) 

def test_constructor_max_buffer_size_deprecation(self):
        with support.check_warnings(("max_buffer_size is deprecated",
                                     DeprecationWarning)):
            self.tp(self.MockRawIO(), self.MockRawIO(), 8, 12) 

def testImpWrapper(self):
        i = ImpWrapper()
        sys.meta_path.append(i)
        sys.path_hooks.append(ImpWrapper)
        mnames = ("colorsys", "urlparse", "distutils.core", "compiler.misc")
        for mname in mnames:
            parent = mname.split(".")[0]
            for n in sys.modules.keys():
                if n.startswith(parent):
                    del sys.modules[n]
        with test_support.check_warnings(("The compiler package is deprecated "
                                          "and removed", DeprecationWarning)):
            for mname in mnames:
                m = __import__(mname, globals(), locals(), ["__dummy__"])
                m.__loader__  # to make sure we actually handled the import 

def test_main():
    run_unittest(CookieTests)
    if Cookie.__doc__ is not None:
        with check_warnings(('.+Cookie class is insecure; do not use it',
                             DeprecationWarning)):
            run_doctest(Cookie) 

def assertOldResultWarning(self, test, failures):
        with test_support.check_warnings(("TestResult has no add.+ method,",
                                          RuntimeWarning)):
            result = OldResult()
            test.run(result)
            self.assertEqual(len(result.failures), failures) 

def test_ushort_max(self):
        with test_support.check_warnings(('', RuntimeWarning)):
            ts.T_USHORT = USHRT_MAX+1 

def test_check_metadata_deprecated(self):
        # makes sure make_metadata is deprecated
        dist, cmd = self.get_cmd()
        with check_warnings() as w:
            warnings.simplefilter("always")
            cmd.check_metadata()
            self.assertEqual(len(w.warnings), 1) 

def test_compress_deprecated(self):
        tmpdir, tmpdir2, base_name =  self._create_files()

        # using compress and testing the PendingDeprecationWarning
        old_dir = os.getcwd()
        os.chdir(tmpdir)
        try:
            with check_warnings() as w:
                warnings.simplefilter("always")
                make_tarball(base_name, 'dist', compress='compress')
        finally:
            os.chdir(old_dir)
        tarball = base_name + '.tar.Z'
        self.assertTrue(os.path.exists(tarball))
        self.assertEqual(len(w.warnings), 1)

        # same test with dry_run
        os.remove(tarball)
        old_dir = os.getcwd()
        os.chdir(tmpdir)
        try:
            with check_warnings() as w:
                warnings.simplefilter("always")
                make_tarball(base_name, 'dist', compress='compress',
                             dry_run=True)
        finally:
            os.chdir(old_dir)
        self.assertFalse(os.path.exists(tarball))
        self.assertEqual(len(w.warnings), 1) 

def test_max_buffer_size_deprecation(self):
        with support.check_warnings(("max_buffer_size is deprecated",
                                     DeprecationWarning)):
            self.tp(self.MockRawIO(), 8, 12) 

def testWarnings(self):
        with check_warnings(quiet=True) as w:
            self.assertEqual(w.warnings, [])
            self.assertRaises(TypeError, _FileIO, [])
            self.assertEqual(w.warnings, [])
            self.assertRaises(ValueError, _FileIO, "/some/invalid/name", "rt")
            self.assertEqual(w.warnings, []) 

def test_short_min(self):
        with test_support.check_warnings(('', RuntimeWarning)):
            ts.T_SHORT = SHRT_MIN-1 

def test_short_max(self):
        with test_support.check_warnings(('', RuntimeWarning)):
            ts.T_SHORT = SHRT_MAX+1 

def test_byte_min(self):
        with test_support.check_warnings(('', RuntimeWarning)):
            ts.T_BYTE = CHAR_MIN-1 

def test_byte_max(self):
        with test_support.check_warnings(('', RuntimeWarning)):
            ts.T_BYTE = CHAR_MAX+1 

def test_main():
    deprecations = [(r'complex divmod\(\), // and % are deprecated$',
                     DeprecationWarning)]
    if sys.py3kwarning:
        deprecations += [
            ("classic (int|long) division", DeprecationWarning),
            ("coerce.. not supported", DeprecationWarning),
            (".+__(get|set|del)slice__ has been removed", DeprecationWarning)]
    with test_support.check_warnings(*deprecations):
        # Run all local test cases, with PTypesLongInitTest first.
        test_support.run_unittest(PTypesLongInitTest, OperatorsTest,
                                  ClassPropertiesAndMethods, DictProxyTests) 

def test_message_deprecation(self):
        # As of Python 2.6, BaseException.message is deprecated.
        with check_warnings(("", DeprecationWarning)):
            BaseException().message 

def ignore_deprecation_warnings(func):
    """Ignore the known DeprecationWarnings."""
    def wrapper(*args, **kw):
        with check_warnings(*_deprecations, quiet=True):
            return func(*args, **kw)
    return wrapper 

def test_main():
    with test_support.check_warnings(("With-statements now directly support "
                                      "multiple context managers",
                                      DeprecationWarning)):
        test_support.run_unittest(__name__) 

def test_main():
    with check_warnings(("complex divmod.., // and % are deprecated",
                         DeprecationWarning),
                        ("classic (int|long) division", DeprecationWarning),
                        quiet=True):
        run_unittest(CoercionTest) 

def testImpWrapper(self):
        i = ImpWrapper()
        sys.meta_path.append(i)
        sys.path_hooks.append(ImpWrapper)
        mnames = ("colorsys", "urlparse", "distutils.core", "compiler.misc")
        for mname in mnames:
            parent = mname.split(".")[0]
            for n in sys.modules.keys():
                if n.startswith(parent):
                    del sys.modules[n]
        with test_support.check_warnings(("The compiler package is deprecated "
                                          "and removed", DeprecationWarning)):
            for mname in mnames:
                m = __import__(mname, globals(), locals(), ["__dummy__"])
                m.__loader__  # to make sure we actually handled the import 

def test_constructor_max_buffer_size_deprecation(self):
        with support.check_warnings(("max_buffer_size is deprecated",
                                     DeprecationWarning)):
            self.tp(self.MockRawIO(), self.MockRawIO(), 8, 12)