Python webapp2 模块，RequestHandler() 实例源码

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = client.OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def test_handle_exception_with_error(self):
        class HomeHandler(webapp2.RequestHandler):
            def get(self, **kwargs):
                raise TypeError()

        def handle_exception(request, response, exception):
            raise ValueError()

        app = webapp2.WSGIApplication([
            webapp2.Route('/', HomeHandler, name='home'),
        ], debug=False)
        app.error_handlers[500] = handle_exception

        req = webapp2.Request.blank('/')
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 500)

def test_handle_exception_with_error_debug(self):
        class HomeHandler(webapp2.RequestHandler):
            def get(self, **kwargs):
                raise TypeError()

        def handle_exception(request, response, exception):
            raise ValueError()

        app = webapp2.WSGIApplication([
            webapp2.Route('/', HomeHandler, name='home'),
        ], debug=True)
        app.error_handlers[500] = handle_exception

        req = webapp2.Request.blank('/')
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 500)

def test_custom_method(self):
        class MyHandler(webapp2.RequestHandler):
            def my_method(self):
                self.response.out.write('Hello, custom method world!')

            def my_other_method(self):
                self.response.out.write('Hello again, custom method world!')

        app = webapp2.WSGIApplication([
            webapp2.Route('/', MyHandler, handler_method='my_method'),
            webapp2.Route('/other', MyHandler,
                          handler_method='my_other_method'),
        ])

        req = webapp2.Request.blank('/')
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 200)
        self.assertEqual(rsp.body, b'Hello, custom method world!')

        req = webapp2.Request.blank('/other')
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 200)
        self.assertEqual(rsp.body, b'Hello again, custom method world!')

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = client.OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = client.OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def dispatch(self):
        self.session_store = sessions.get_store(request=self.request)
        if 'credentials' in self.session:
            credentials = oauth2client.client.OAuth2Credentials.from_json(self.session['credentials'])
            if credentials.access_token_expired:
                try:
                    credentials.refresh(httplib2.Http())
                    self.session['credentials'] = credentials.to_json()
                except:
                    self.session.pop('email', None)
                    self.session.pop('user_id', None)
                    self.session.pop('credentials', None)
        try:
            webapp2.RequestHandler.dispatch(self)
        finally:
            self.session_store.save_sessions(self.response)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = client.OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = client.OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def _build_state_value(request_handler, user):
    """Composes the value for the 'state' parameter.

    Packs the current request URI and an XSRF token into an opaque string that
    can be passed to the authentication server via the 'state' parameter.

    Args:
        request_handler: webapp.RequestHandler, The request.
        user: google.appengine.api.users.User, The current user.

    Returns:
        The state value as a string.
    """
    uri = request_handler.request.url
    token = xsrfutil.generate_token(xsrf_secret_key(), user.user_id(),
                                    action_id=str(uri))
    return uri + ':' + token

def _create_flow(self, request_handler):
        """Create the Flow object.

        The Flow is calculated lazily since we don't know where this app is
        running until it receives a request, at which point redirect_uri can be
        calculated and then the Flow object can be constructed.

        Args:
            request_handler: webapp.RequestHandler, the request handler.
        """
        if self.flow is None:
            redirect_uri = request_handler.request.relative_url(
                self._callback_path)  # Usually /oauth2callback
            self.flow = OAuth2WebServerFlow(
                self._client_id, self._client_secret, self._scope,
                redirect_uri=redirect_uri, user_agent=self._user_agent,
                auth_uri=self._auth_uri, token_uri=self._token_uri,
                revoke_uri=self._revoke_uri, **self._kwargs)

def oauth_aware(self, method):
        """Decorator that sets up for OAuth 2.0 dance, but doesn't do it.

        Does all the setup for the OAuth dance, but doesn't initiate it.
        This decorator is useful if you want to create a page that knows
        whether or not the user has granted access to this application.
        From within a method decorated with @oauth_aware the has_credentials()
        and authorize_url() methods can be called.

        Args:
            method: callable, to be decorated method of a webapp.RequestHandler
                    instance.
        """

        def setup_oauth(request_handler, *args, **kwargs):
            if self._in_error:
                self._display_error_message(request_handler)
                return

            user = users.get_current_user()
            # Don't use @login_decorator as this could be used in a
            # POST request.
            if not user:
                request_handler.redirect(users.create_login_url(
                    request_handler.request.uri))
                return

            self._create_flow(request_handler)

            self.flow.params['state'] = _build_state_value(request_handler,
                                                           user)
            self.credentials = self._storage_class(
                self._credentials_class, None,
                self._credentials_property_name, user=user).get()
            try:
                resp = method(request_handler, *args, **kwargs)
            finally:
                self.credentials = None
            return resp
        return setup_oauth

def has_credentials(self):
        """True if for the logged in user there are valid access Credentials.

        Must only be called from with a webapp.RequestHandler subclassed method
        that had been decorated with either @oauth_required or @oauth_aware.
        """
        return self.credentials is not None and not self.credentials.invalid

def callback_application(self):
        """WSGI application for handling the OAuth 2.0 redirect callback.

        If you need finer grained control use `callback_handler` which returns
        just the webapp.RequestHandler.

        Returns:
            A webapp.WSGIApplication that handles the redirect back from the
            server during the OAuth 2.0 dance.
        """
        return webapp.WSGIApplication([
            (self.callback_path, self.callback_handler())
        ])

def initialize(self, *a, **kw):
        """
            This methods gets executed for each page and
            verfies user login status, using oookie information.
        """
        webapp2.RequestHandler.initialize(self, *a, **kw)
        uid = self.read_secure_cookie('user_id')
        self.user = uid and User.by_id(int(uid))

def oauth_aware(self, method):
        """Decorator that sets up for OAuth 2.0 dance, but doesn't do it.

        Does all the setup for the OAuth dance, but doesn't initiate it.
        This decorator is useful if you want to create a page that knows
        whether or not the user has granted access to this application.
        From within a method decorated with @oauth_aware the has_credentials()
        and authorize_url() methods can be called.

        Args:
            method: callable, to be decorated method of a webapp.RequestHandler
                    instance.
        """

        def setup_oauth(request_handler, *args, **kwargs):
            if self._in_error:
                self._display_error_message(request_handler)
                return

            user = users.get_current_user()
            # Don't use @login_decorator as this could be used in a
            # POST request.
            if not user:
                request_handler.redirect(users.create_login_url(
                    request_handler.request.uri))
                return

            self._create_flow(request_handler)

            self.flow.params['state'] = _build_state_value(request_handler,
                                                           user)
            self.credentials = self._storage_class(
                self._credentials_class, None,
                self._credentials_property_name, user=user).get()
            try:
                resp = method(request_handler, *args, **kwargs)
            finally:
                self.credentials = None
            return resp
        return setup_oauth

def has_credentials(self):
        """True if for the logged in user there are valid access Credentials.

        Must only be called from with a webapp.RequestHandler subclassed method
        that had been decorated with either @oauth_required or @oauth_aware.
        """
        return self.credentials is not None and not self.credentials.invalid

def callback_application(self):
        """WSGI application for handling the OAuth 2.0 redirect callback.

        If you need finer grained control use `callback_handler` which returns
        just the webapp.RequestHandler.

        Returns:
            A webapp.WSGIApplication that handles the redirect back from the
            server during the OAuth 2.0 dance.
        """
        return webapp.WSGIApplication([
            (self.callback_path, self.callback_handler())
        ])

def get(self):
        setTemplate(self, {"indexPage":True}, 'index.html')

# class Error(webapp2.RequestHandler):
#     def get(self):
#         setTemplate(self, {}, 'error.html', _templateFolder='_templates/')
#         # self.redirect('/error.html', permanent=True)

def __init__(self, request, response):
        self.response = response
        response.write('I am not a RequestHandler but I work.')

def test_escaping(self):
        def get_req(uri):
            req = webapp2.Request.blank(uri)
            app.set_globals(app=app, request=req)
            handler = webapp2.RequestHandler(req, None)
            handler.app = req.app = app
            return req, handler

        req, handler = get_req('http://localhost:80/')
        uri = webapp2.uri_for('escape', name='with space')
        req, handler = get_req(uri)
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 200)
        self.assertEqual(rsp.body, b'with space')

        req, handler = get_req('http://localhost:80/')
        uri = webapp2.uri_for('escape', name='with+plus')
        req, handler = get_req(uri)
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 200)
        self.assertEqual(rsp.body, b'with plus')

        req, handler = get_req('http://localhost:80/')
        uri = webapp2.uri_for('escape', name='with/slash')
        req, handler = get_req(uri)
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 200)
        self.assertEqual(rsp.body, b'with/slash')

def test_encoding(self):
        class PostHandler(webapp2.RequestHandler):
            def post(self):
                foo = self.request.POST['foo']
                if not foo:
                    foo = 'empty'

                self.response.write(foo)

        app = webapp2.WSGIApplication([
            webapp2.Route('/', PostHandler),
        ], debug=True)

        # foo with umlauts in the vowels.
        value = b'f\xc3\xb6\xc3\xb6'

        rsp = app.get_response(
            '/',
            POST={'foo': value},
            headers=[('Content-Type',
                      'application/x-www-form-urlencoded; charset=utf-8')]
        )
        self.assertEqual(rsp.unicode_body, u'föö')
        self.assertEqual(rsp.body, value)

        rsp = app.get_response(
            '/',
            POST={'foo': value},
            headers=[('Content-Type', 'application/x-www-form-urlencoded')]
        )
        self.assertEqual(rsp.unicode_body, u'föö')
        self.assertEqual(rsp.body, value)

def test_handle_exception_that_returns_response(self):
        class HomeHandler(webapp2.RequestHandler):
            def get(self, **kwargs):
                raise TypeError()

        app = webapp2.WSGIApplication([
            webapp2.Route('/', HomeHandler, name='home'),
        ])
        app.error_handlers[500] = 'tests.resources.handlers.handle_exception'

        req = webapp2.Request.blank('/')
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 200)
        self.assertEqual(rsp.body, b'Hello, custom response world!')

def test_return_is_not_wsgi_app(self):
        class HomeHandler(webapp2.RequestHandler):
            def get(self, **kwargs):
                return ''

        app = webapp2.WSGIApplication([
            webapp2.Route('/', HomeHandler, name='home'),
        ], debug=False)

        req = webapp2.Request.blank('/')
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 500)

def test_old_app_new_handler(self):
        req = webapp2.Request.blank('/test/foo')
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 200)
        self.assertEqual(rsp.body, 'foo')

        req = webapp2.Request.blank('/test/bar')
        rsp = req.get_response(app)
        self.assertEqual(rsp.status_int, 200)
        self.assertEqual(rsp.body, 'bar')

        self.assertTrue(issubclass(OldStyleHandler, webapp.RequestHandler))

def oauth_aware(self, method):
        """Decorator that sets up for OAuth 2.0 dance, but doesn't do it.

        Does all the setup for the OAuth dance, but doesn't initiate it.
        This decorator is useful if you want to create a page that knows
        whether or not the user has granted access to this application.
        From within a method decorated with @oauth_aware the has_credentials()
        and authorize_url() methods can be called.

        Args:
            method: callable, to be decorated method of a webapp.RequestHandler
                    instance.
        """

        def setup_oauth(request_handler, *args, **kwargs):
            if self._in_error:
                self._display_error_message(request_handler)
                return

            user = users.get_current_user()
            # Don't use @login_decorator as this could be used in a
            # POST request.
            if not user:
                request_handler.redirect(users.create_login_url(
                    request_handler.request.uri))
                return

            self._create_flow(request_handler)

            self.flow.params['state'] = _build_state_value(request_handler,
                                                           user)
            self.credentials = self._storage_class(
                self._credentials_class, None,
                self._credentials_property_name, user=user).get()
            try:
                resp = method(request_handler, *args, **kwargs)
            finally:
                self.credentials = None
            return resp
        return setup_oauth

def authorize_url(self):
        """Returns the URL to start the OAuth dance.

        Must only be called from with a webapp.RequestHandler subclassed method
        that had been decorated with either @oauth_required or @oauth_aware.
        """
        url = self.flow.step1_get_authorize_url()
        return str(url)