Add websocket.handler.before/after/exception signals.

docs/conf.py

@@ -19,7 +19,7 @@ import sys
 root_directory = os.path.dirname(os.getcwd())
 sys.path.insert(0, root_directory)
 
-import sanic  # noqa: E402
+import sanic
 
 
 # -- General configuration ------------------------------------------------

examples/amending_request_object.py

@@ -25,6 +25,5 @@ def key_exist_handler(request):
 
     return text("num does not exist in request")
 
-
 if __name__ == "__main__":
     app.run(host="0.0.0.0", port=8000, debug=True)

examples/http_redirect.py

@@ -69,6 +69,5 @@ async def runner(app: Sanic, app_server: AsyncioServer):
         app.is_running = False
         app.is_stopping = True
 
-
 if __name__ == "__main__":
     https.run(port=HTTPS_PORT, debug=True)

examples/request_stream/client.py

@@ -1,6 +1,5 @@
 import requests
 
-
 # Warning: This is a heavy process.
 
 data = ""

examples/run_async_advanced.py

@@ -35,7 +35,6 @@ async def after_server_stop(app, loop):
 async def test(request):
     return response.json({"answer": "42"})
 
-
 if __name__ == "__main__":
     asyncio.set_event_loop(uvloop.new_event_loop())
     serv_coro = app.create_server(

guide/content/en/migrate.py

@@ -1,5 +1,4 @@
 import re
-
 from pathlib import Path
 from textwrap import indent
 

guide/pyproject.toml

@@ -1,7 +0,0 @@
-[tool.ruff]
-extend = "../pyproject.toml"
-
-[tool.ruff.isort]
-known-first-party = ["webapp"]
-lines-after-imports = 1
-lines-between-types = 1

guide/webapp/display/base.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 from html5tagger import Builder, Document  # type: ignore
 
+
 class BaseRenderer:
     def __init__(self, base_title: str):
         self.base_title = base_title

guide/webapp/display/code_style.py

@@ -7,6 +7,7 @@ from pygments.token import (  # Error,; Generic,; Number,; Operator,
     Token,
 )
 
+
 class SanicCodeStyle(Style):
     styles = {
         Token: "#777",

guide/webapp/display/layouts/base.py

@@ -6,6 +6,7 @@ from typing import Generator
 from html5tagger import Builder
 from sanic import Request
 
+
 class BaseLayout:
     def __init__(self, builder: Builder):
         self.builder = builder

guide/webapp/display/layouts/elements/footer.py

@@ -3,6 +3,7 @@ from datetime import datetime
 from html5tagger import Builder, E  # type: ignore
 from sanic import Request
 
+
 def do_footer(builder: Builder, request: Request) -> None:
     builder.footer(
         _pagination(request),

guide/webapp/display/layouts/elements/navbar.py

@@ -1,7 +1,8 @@
+from webapp.display.layouts.models import MenuItem
+
 from html5tagger import Builder, E  # type: ignore
 from sanic import Request
 
-from webapp.display.layouts.models import MenuItem
 
 def do_navbar(builder: Builder, request: Request) -> None:
     navbar_items = [

guide/webapp/display/layouts/elements/sidebar.py

@@ -1,8 +1,9 @@
+from webapp.display.layouts.models import MenuItem
+from webapp.display.text import slugify
+
 from html5tagger import Builder, E  # type: ignore
 from sanic import Request
 
-from webapp.display.layouts.models import MenuItem
-from webapp.display.text import slugify
 
 def do_sidebar(builder: Builder, request: Request) -> None:
     builder.a(class_="burger")(E.span().span().span().span())

guide/webapp/display/layouts/home.py

@@ -8,6 +8,7 @@ from sanic import Request
 
 from .base import BaseLayout
 
+
 class HomeLayout(BaseLayout):
     @contextmanager
     def layout(

guide/webapp/display/layouts/main.py

@@ -1,14 +1,15 @@
 from contextlib import contextmanager
 from typing import Generator
 
-from sanic import Request
-
 from webapp.display.layouts.elements.footer import do_footer
 from webapp.display.layouts.elements.navbar import do_navbar
 from webapp.display.layouts.elements.sidebar import do_sidebar
 
+from sanic import Request
+
 from .base import BaseLayout
 
+
 class MainLayout(BaseLayout):
     @contextmanager
     def layout(

guide/webapp/display/layouts/models.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 from msgspec import Struct, field
 
+
 class MenuItem(Struct, kw_only=False, omit_defaults=True):
     label: str
     path: str | None = None

guide/webapp/display/markdown.py

@@ -1,8 +1,6 @@
 import re
-
 from textwrap import dedent
 
-from html5tagger import HTML, Builder, E  # type: ignore
 from mistune import HTMLRenderer, create_markdown, escape
 from mistune.directives import RSTDirective, TableOfContents
 from mistune.util import safe_entity
@@ -10,6 +8,8 @@ from pygments import highlight
 from pygments.formatters import html
 from pygments.lexers import get_lexer_by_name
 
+from html5tagger import HTML, Builder, E  # type: ignore
+
 from .code_style import SanicCodeStyle
 from .plugins.attrs import Attributes
 from .plugins.columns import Column
@@ -20,6 +20,7 @@ from .plugins.span import span
 from .plugins.tabs import Tabs
 from .text import slugify
 
+
 class DocsRenderer(HTMLRenderer):
     def block_code(self, code: str, info: str | None = None):
         builder = Builder("Block")

guide/webapp/display/page/docobject.py

@@ -3,7 +3,6 @@ from __future__ import annotations
 import importlib
 import inspect
 import pkgutil
-
 from collections import defaultdict
 from dataclasses import dataclass, field
 from html import escape
@@ -11,10 +10,12 @@ from html import escape
 from docstring_parser import Docstring, DocstringParam, DocstringRaises
 from docstring_parser import parse as parse_docstring
 from docstring_parser.common import DocstringExample
+
 from html5tagger import HTML, Builder, E  # type: ignore
 
 from ..markdown import render_markdown, slugify
 
+
 @dataclass
 class DocObject:
     name: str

guide/webapp/display/page/renderer.py

@@ -3,14 +3,15 @@ from __future__ import annotations
 from contextlib import contextmanager
 from typing import Type
 
+from webapp.display.base import BaseRenderer
+
 from html5tagger import HTML, Builder  # type: ignore
 from sanic import Request
 
-from webapp.display.base import BaseRenderer
-
 from ..layouts.base import BaseLayout
 from .page import Page
 
+
 class PageRenderer(BaseRenderer):
     def render(self, request: Request, language: str, path: str) -> Builder:
         builder = self.get_builder(

guide/webapp/display/plugins/attrs.py

@@ -2,11 +2,13 @@ from re import Match
 from textwrap import dedent
 from typing import Any
 
-from html5tagger import HTML, E
 from mistune.block_parser import BlockParser
 from mistune.core import BlockState
 from mistune.directives import DirectivePlugin
 
+from html5tagger import HTML, E
+
+
 class Attributes(DirectivePlugin):
     def __call__(self, directive, md):
         directive.register("attrs", self.parse)

guide/webapp/display/plugins/columns.py

@@ -8,6 +8,7 @@ from mistune.core import BlockState
 from mistune.directives import DirectivePlugin, RSTDirective
 from mistune.markdown import Markdown
 
+
 class Column(DirectivePlugin):
     def parse(
         self, block: BlockParser, m: Match, state: BlockState

guide/webapp/display/plugins/hook.py

@@ -2,6 +2,7 @@ from mistune.core import BlockState
 from mistune.directives import DirectivePlugin, RSTDirective
 from mistune.markdown import Markdown
 
+
 class Hook(DirectivePlugin):
     def __call__(  # type: ignore
         self, directive: RSTDirective, md: Markdown

guide/webapp/display/plugins/mermaid.py

@@ -3,13 +3,15 @@ from re import Match
 from textwrap import dedent
 from typing import Any
 
-from html5tagger import HTML, E
 from mistune import HTMLRenderer
 from mistune.block_parser import BlockParser
 from mistune.core import BlockState
 from mistune.directives import DirectivePlugin, RSTDirective
 from mistune.markdown import Markdown
 
+from html5tagger import HTML, E
+
+
 class Mermaid(DirectivePlugin):
     def parse(
         self, block: BlockParser, m: Match, state: BlockState

guide/webapp/display/plugins/notification.py

@@ -1,6 +1,8 @@
-from html5tagger import HTML, E
 from mistune.directives import Admonition
 
+from html5tagger import HTML, E
+
+
 class Notification(Admonition):
     SUPPORTED_NAMES = {
         "success",

guide/webapp/display/plugins/span.py

@@ -2,6 +2,7 @@ import re
 
 from mistune.markdown import Markdown
 
+
 def parse_inline_span(inline, m: re.Match, state):
     state.append_token(
         {

guide/webapp/display/plugins/tabs.py

@@ -8,6 +8,7 @@ from mistune.core import BlockState
 from mistune.directives import DirectivePlugin, RSTDirective
 from mistune.markdown import Markdown
 
+
 class Tabs(DirectivePlugin):
     def parse(
         self, block: BlockParser, m: Match, state: BlockState

guide/webapp/display/search/renderer.py

@@ -1,14 +1,15 @@
 from contextlib import contextmanager
 from urllib.parse import unquote
 
+from webapp.display.search.search import Searcher
+
 from html5tagger import Builder, E  # type: ignore
 from sanic import Request
 
-from webapp.display.search.search import Searcher
-
 from ..base import BaseRenderer
 from ..layouts.main import MainLayout
 
+
 class SearchRenderer(BaseRenderer):
     def render(
         self, request: Request, language: str, searcher: Searcher, full: bool

guide/webapp/display/search/search.py

@@ -5,9 +5,9 @@ from pathlib import Path
 from typing import ClassVar
 
 from msgspec import Struct
-
 from webapp.display.page import Page
 
+
 class Stemmer:
     STOP_WORDS: ClassVar[set[str]] = set(
         "a about above after again against all am an and any are aren't as at be because been before being below between both but by can't cannot could couldn't did didn't do does doesn't doing don't down during each few for from further had hadn't has hasn't have haven't having he he'd he'll he's her here here's hers herself him himself his how how's i i'd i'll i'm i've if in into is isn't it it's its itself let's me more most mustn't my myself no nor not of off on once only or other ought our ours ourselves out over own same shan't she she'd she'll she's should shouldn't so some such than that that's the their theirs them themselves then there there's these they they'd they'll they're they've this those through to too under until up very was wasn't we we'd we'll we're we've were weren't what what's when when's where where's which while who who's whom why why's with won't would wouldn't you you'd you'll you're you've your yours yourself yourselves".split()  # noqa: E501

guide/webapp/endpoint/search.py

@@ -1,11 +1,11 @@
 # from urllib.parse import unquote
 
-from sanic import Blueprint, Request, Sanic, html
-
 from webapp.display.page import Page
 from webapp.display.search.renderer import SearchRenderer
 from webapp.display.search.search import Document, Searcher, Stemmer
 
+from sanic import Blueprint, Request, Sanic, html
+
 bp = Blueprint("search", url_prefix="/<language>/search")
 
 

guide/webapp/worker/config.py

@@ -1,9 +1,9 @@
 from pathlib import Path
 
 from msgspec import yaml
-
 from webapp.display.layouts.models import GeneralConfig, MenuItem
 
+
 def load_menu(path: Path) -> list[MenuItem]:
     loaded = yaml.decode(path.read_bytes(), type=dict[str, list[MenuItem]])
     return loaded["root"]

guide/webapp/worker/factory.py

@@ -1,7 +1,5 @@
 from pathlib import Path
 
-from sanic import Request, Sanic, html, redirect
-
 from webapp.display.layouts.models import MenuItem
 from webapp.display.page import Page, PageRenderer
 from webapp.endpoint.view import bp
@@ -9,6 +7,9 @@ from webapp.worker.config import load_config, load_menu
 from webapp.worker.reload import setup_livereload
 from webapp.worker.style import setup_style
 
+from sanic import Request, Sanic, html, redirect
+
+
 def _compile_sidebar_order(items: list[MenuItem]) -> list[str]:
     order = []
     for item in items:

guide/webapp/worker/reload.py

@@ -8,6 +8,7 @@ import ujson
 
 from sanic import Request, Sanic, Websocket
 
+
 def setup_livereload(app: Sanic) -> None:
     @app.main_process_start
     async def main_process_start(app: Sanic):

guide/webapp/worker/style.py

@@ -1,11 +1,12 @@
 # from scss.compiler import compile_string
 
 from pygments.formatters import html
-from sanic import Sanic
 from sass import compile as compile_scss
-
 from webapp.display.code_style import SanicCodeStyle
 
+from sanic import Sanic
+
+
 def setup_style(app: Sanic) -> None:
     index = app.config.STYLE_DIR / "index.scss"
     style_output = app.config.PUBLIC_DIR / "assets" / "style.css"

pyproject.toml

@@ -2,19 +2,6 @@
 requires = ["setuptools", "wheel"]
 build-backend = "setuptools.build_meta"
 
-[tool.ruff]
-extend-select = ["I"]
-ignore = ["D100", "D101", "D102", "D103", "E402", "E741", "F811", "F821"]
-line-length = 79
-show-source = true
-show-fixes = true
-
-[tool.ruff.isort]
-known-first-party = ["sanic"]
-known-third-party = ["pytest"]
-lines-after-imports = 2
-lines-between-types = 1
-
 [tool.black]
 line-length = 79
 

sanic/app.py

@@ -1369,6 +1369,12 @@ class Sanic(
             protocol = request.transport.get_protocol()
             ws = await protocol.websocket_handshake(request, subprotocols)
 
+        await self.dispatch(
+            "websocket.handler.before",
+            inline=True,
+            context={"request": request, "websocket": ws},
+            fail_not_found=False,
+        )
         # schedule the application handler
         # its future is kept in self.websocket_tasks in case it
         # needs to be cancelled due to the server being stopped
@@ -1377,10 +1383,24 @@ class Sanic(
         cancelled = False
         try:
             await fut
+            await self.dispatch(
+                "websocket.handler.after",
+                inline=True,
+                context={"request": request, "websocket": ws},
+                reverse=True,
+                fail_not_found=False,
+            )
         except (CancelledError, ConnectionClosed):  # type: ignore
             cancelled = True
         except Exception as e:
             self.error_handler.log(request, e)
+            await self.dispatch(
+                "websocket.handler.exception",
+                inline=True,
+                context={"request": request, "websocket": ws, "exception": e},
+                reverse=True,
+                fail_not_found=False,
+            )
         finally:
             self.websocket_tasks.remove(fut)
             if cancelled:

sanic/headers.py

@@ -349,7 +349,8 @@ def parse_content_header(value: str) -> Tuple[str, Options]:
         options: Dict[str, Union[int, str]] = {}
     else:
         options = {
-            m.group(1).lower(): (m.group(2) or m.group(3))
+            m.group(1)
+            .lower(): (m.group(2) or m.group(3))
             .replace("%22", '"')
             .replace("%0D%0A", "\n")
             for m in _param.finditer(value[pos:])

sanic/mixins/exceptions.py

@@ -14,7 +14,7 @@ class ExceptionMixin(metaclass=SanicMeta):
     def exception(
         self,
         *exceptions: Union[Type[Exception], List[Type[Exception]]],
-        apply: bool = True,
+        apply: bool = True
     ) -> Callable:
         """Decorator used to register an exception handler for the current application or blueprint instance.
 

sanic/mixins/middleware.py

@@ -25,7 +25,7 @@ class MiddlewareMixin(metaclass=SanicMeta):
         attach_to: str = "request",
         apply: bool = True,
         *,
-        priority: int = 0,
+        priority: int = 0
     ) -> MiddlewareType:
         ...
 
@@ -36,7 +36,7 @@ class MiddlewareMixin(metaclass=SanicMeta):
         attach_to: str = "request",
         apply: bool = True,
         *,
-        priority: int = 0,
+        priority: int = 0
     ) -> Callable[[MiddlewareType], MiddlewareType]:
         ...
 
@@ -46,7 +46,7 @@ class MiddlewareMixin(metaclass=SanicMeta):
         attach_to: str = "request",
         apply: bool = True,
         *,
-        priority: int = 0,
+        priority: int = 0
     ) -> Union[MiddlewareType, Callable[[MiddlewareType], MiddlewareType]]:
         """Decorator for registering middleware.
 

sanic/models/server_types.py

@@ -44,8 +44,12 @@ class ConnInfo:
         self.server_name = ""
         self.cert: Dict[str, Any] = {}
         self.network_paths: List[Any] = []
-        sslobj: Optional[SSLObject] = transport.get_extra_info("ssl_object")  # type: ignore
+        sslobj: Optional[SSLObject] = transport.get_extra_info(
-        sslctx: Optional[SSLContext] = transport.get_extra_info("ssl_context")  # type: ignore
+            "ssl_object"
+        )  # type: ignore
+        sslctx: Optional[SSLContext] = transport.get_extra_info(
+            "ssl_context"
+        )  # type: ignore
         if sslobj:
             self.ssl = True
             self.server_name = getattr(sslobj, "sanic_server_name", None) or ""

sanic/server/websockets/frame.py

@@ -57,7 +57,9 @@ class WebsocketFrameAssembler:
         self.read_mutex = asyncio.Lock()
         self.write_mutex = asyncio.Lock()
 
-        self.completed_queue = asyncio.Queue(maxsize=1)  # type: asyncio.Queue[Data]
+        self.completed_queue = asyncio.Queue(
+            maxsize=1
+        )  # type: asyncio.Queue[Data]
 
         # put() sets this event to tell get() that a message can be fetched.
         self.message_complete = asyncio.Event()

sanic/signals.py

@@ -38,6 +38,9 @@ class Event(Enum):
     HTTP_LIFECYCLE_SEND = "http.lifecycle.send"
     HTTP_MIDDLEWARE_AFTER = "http.middleware.after"
     HTTP_MIDDLEWARE_BEFORE = "http.middleware.before"
+    WEBSOCKET_HANDLER_AFTER = "websocket.handler.after"
+    WEBSOCKET_HANDLER_BEFORE = "websocket.handler.before"
+    WEBSOCKET_HANDLER_EXCEPTION = "websocket.handler.exception"
 
 
 RESERVED_NAMESPACES = {
@@ -65,6 +68,11 @@ RESERVED_NAMESPACES = {
         Event.HTTP_MIDDLEWARE_AFTER.value,
         Event.HTTP_MIDDLEWARE_BEFORE.value,
     ),
+    "websocket": {
+        Event.WEBSOCKET_HANDLER_AFTER.value,
+        Event.WEBSOCKET_HANDLER_BEFORE.value,
+        Event.WEBSOCKET_HANDLER_EXCEPTION.value,
+    },
 }
 
 

sanic/worker/state.py

@@ -1,6 +1,7 @@
 from collections.abc import Mapping
-from typing import Any, Dict, ItemsView, Iterator, KeysView, List, ValuesView
+from typing import Any, Dict, ItemsView, Iterator, KeysView, List
 from typing import Mapping as MappingType
+from typing import ValuesView
 
 
 dict

scripts/changelog.py

@@ -1,14 +1,12 @@
 #!/usr/bin/env python
 
-import sys
-
 from os import path
-
+import sys
 
 if __name__ == "__main__":
     try:
-        import click
         import towncrier
+        import click
     except ImportError:
         print(
             "Please make sure you have a installed towncrier and click before using this tool"

scripts/release.py

@@ -1,20 +1,17 @@
 #!/usr/bin/env python
 
-import sys
-
 from argparse import ArgumentParser, Namespace
 from collections import OrderedDict
 from configparser import RawConfigParser
 from datetime import datetime
 from json import dumps
-from os import chdir, path
+from os import path, chdir
-from subprocess import PIPE, Popen
+from subprocess import Popen, PIPE
 
-import towncrier
+from jinja2 import Environment, BaseLoader
-
-from jinja2 import BaseLoader, Environment
 from requests import patch
-
+import sys
+import towncrier
 
 GIT_COMMANDS = {
     "get_tag": ["git describe --tags --abbrev=0"],
@@ -81,7 +78,7 @@ def _run_shell_command(command: list):
         output, error = process.communicate()
         return_code = process.returncode
         return output.decode("utf-8"), error, return_code
-    except Exception:
+    except:
         return None, None, -1
 
 

tests/performance/bottle/simple_server.py

@@ -2,7 +2,7 @@
 import bottle
 import ujson
 
-from bottle import route
+from bottle import route, run
 
 
 @route("/")

tests/performance/sanic/http_response.py

@@ -3,6 +3,8 @@ import os
 import sys
 import timeit
 
+import asyncpg
+
 from sanic.response import json
 
 

tests/performance/wheezy/simple_server.py

@@ -4,6 +4,7 @@
 import ujson
 
 from wheezy.http import HTTPResponse, WSGIApplication
+from wheezy.http.response import json_response
 from wheezy.routing import url
 from wheezy.web.handlers import BaseHandler
 from wheezy.web.middleware import (

tests/test_asgi.py

@@ -1,3 +1,4 @@
+import asyncio
 import logging
 
 from collections import deque, namedtuple
@@ -11,7 +12,7 @@ from pytest import MonkeyPatch
 
 from sanic import Sanic
 from sanic.application.state import Mode
-from sanic.asgi import Lifespan, MockTransport
+from sanic.asgi import ASGIApp, Lifespan, MockTransport
 from sanic.exceptions import BadRequest, Forbidden, ServiceUnavailable
 from sanic.request import Request
 from sanic.response import json, text

tests/test_blueprint_group.py

@@ -22,7 +22,7 @@ def test_bp_group_indexing(app: Sanic):
     group = Blueprint.group(blueprint_1, blueprint_2)
     assert group[0] == blueprint_1
 
-    with raises(expected_exception=IndexError):
+    with raises(expected_exception=IndexError) as e:
         _ = group[3]
 
 

tests/test_cancellederror.py

@@ -1,5 +1,9 @@
+import asyncio
+
 from asyncio import CancelledError
 
+import pytest
+
 from sanic import Request, Sanic, json
 
 

tests/test_exceptions_handler.py

@@ -7,7 +7,7 @@ from unittest.mock import Mock
 import pytest
 
 from bs4 import BeautifulSoup
-from pytest import LogCaptureFixture, MonkeyPatch
+from pytest import LogCaptureFixture, MonkeyPatch, WarningsRecorder
 
 from sanic import Sanic, handlers
 from sanic.exceptions import BadRequest, Forbidden, NotFound, ServerError
@@ -169,7 +169,7 @@ def test_exception_handler_lookup(exception_handler_app: Sanic):
         pass
 
     try:
-        ModuleNotFoundError  # noqa: F823
+        ModuleNotFoundError
     except Exception:
 
         class ModuleNotFoundError(ImportError):

tests/test_ext_integration.py

@@ -1,12 +1,14 @@
 import sys
 
+from unittest.mock import MagicMock
+
 import pytest
 
 from sanic import Sanic
 
 
 try:
-    import sanic_ext  # noqa: F401
+    import sanic_ext
 
     SANIC_EXT_IN_ENV = True
 except ImportError:

tests/test_headers.py

@@ -57,7 +57,7 @@ def raised_ceiling():
             # Chrome, Firefox:
             # Content-Disposition: form-data; name="foo%22;bar\"; filename="😀"
             'form-data; name="foo%22;bar\\"; filename="😀"',
-            ("form-data", {"name": 'foo";bar\\', "filename": "😀"}),
+            ("form-data", {"name": 'foo";bar\\', "filename": "😀"})
             # cgi: ('form-data', {'name': 'foo%22;bar"; filename="😀'})
             # werkzeug (pre 2.3.0): ('form-data', {'name': 'foo%22;bar"; filename='})
         ),

tests/test_multiprocessing.py

@@ -14,6 +14,7 @@ from sanic_testing.testing import HOST, PORT
 from sanic import Blueprint, text
 from sanic.compat import use_context
 from sanic.log import logger
+from sanic.server.socket import configure_socket
 
 
 @pytest.mark.skipif(

tests/test_request_stream.py

@@ -573,7 +573,7 @@ def test_streaming_echo():
 
     async def client(app, reader, writer):
         # Unfortunately httpx does not support 2-way streaming, so do it by hand.
-        host = "host: localhost:8000\r\n".encode()
+        host = f"host: localhost:8000\r\n".encode()
         writer.write(
             b"POST /echo HTTP/1.1\r\n" + host + b"content-length: 2\r\n"
             b"content-type: text/plain; charset=utf-8\r\n"
@@ -581,7 +581,7 @@ def test_streaming_echo():
         )
         # Read response
         res = b""
-        while b"\r\n\r\n" not in res:
+        while not b"\r\n\r\n" in res:
             res += await reader.read(4096)
         assert res.startswith(b"HTTP/1.1 200 OK\r\n")
         assert res.endswith(b"\r\n\r\n")
@@ -589,7 +589,7 @@ def test_streaming_echo():
 
         async def read_chunk():
             nonlocal buffer
-            while b"\r\n" not in buffer:
+            while not b"\r\n" in buffer:
                 data = await reader.read(4096)
                 assert data
                 buffer += data
@@ -618,6 +618,6 @@ def test_streaming_echo():
         assert res == b"-"
 
         res = await read_chunk()
-        assert res is None
+        assert res == None
 
     app.run(access_log=False, single_process=True)

tests/test_requests.py

@@ -2011,11 +2011,11 @@ def test_server_name_and_url_for(app):
     app.config.SERVER_NAME = "my-server"  # This means default port
     assert app.url_for("handler", _external=True) == "http://my-server/foo"
     request, response = app.test_client.get("/foo")
-    assert request.url_for("handler") == "http://my-server/foo"
+    assert request.url_for("handler") == f"http://my-server/foo"
 
     app.config.SERVER_NAME = "https://my-server/path"
     request, response = app.test_client.get("/foo")
-    url = "https://my-server/path/foo"
+    url = f"https://my-server/path/foo"
     assert app.url_for("handler", _external=True) == url
     assert request.url_for("handler") == url
 
@@ -2180,7 +2180,7 @@ def test_safe_method_with_body_ignored(app):
     )
 
     assert request.body == b""
-    assert request.json is None
+    assert request.json == None
     assert response.body == b"OK"
 
 

tests/test_response.py

@@ -610,7 +610,7 @@ def test_multiple_responses(
 
     @app.get("/4")
     async def handler4(request: Request):
-        await request.respond(headers={"one": "one"})
+        response = await request.respond(headers={"one": "one"})
         return json({"foo": "bar"}, headers={"one": "two"})
 
     @app.get("/5")
@@ -641,6 +641,10 @@ def test_multiple_responses(
         "been responded to."
     )
 
+    error_msg3 = (
+        "Response stream was ended, no more "
+        "response data is allowed to be sent."
+    )
 
     with caplog.at_level(ERROR):
         _, response = app.test_client.get("/1")
@@ -765,7 +769,7 @@ def test_file_response_headers(
     assert (
         "cache-control" in headers
         and f"max-age={test_max_age}" in headers.get("cache-control")
-        and "public" in headers.get("cache-control")
+        and f"public" in headers.get("cache-control")
     )
     assert (
         "expires" in headers
@@ -796,14 +800,14 @@ def test_file_response_headers(
 
     _, response = app.test_client.get(f"/files/no_cache/{file_name}")
     headers = response.headers
-    assert "cache-control" in headers and "no-cache" == headers.get(
+    assert "cache-control" in headers and f"no-cache" == headers.get(
         "cache-control"
     )
     assert response.status == 200
 
     _, response = app.test_client.get(f"/files/no_store/{file_name}")
     headers = response.headers
-    assert "cache-control" in headers and "no-store" == headers.get(
+    assert "cache-control" in headers and f"no-store" == headers.get(
         "cache-control"
     )
     assert response.status == 200

tests/test_ws_handlers.py

@@ -54,3 +54,65 @@ def test_ws_handler_async_for(
     )
     assert ws_proxy.client_sent == ["test 1", "test 2", ""]
     assert ws_proxy.client_received == ["test 1", "test 2"]
+
+
+def signalapp(app):
+    @app.signal("websocket.handler.before")
+    async def ws_before(request: Request, websocket: Websocket):
+        app.ctx.seq.append("before")
+        print("before")
+        await websocket.send("before: " + await websocket.recv())
+        print("before2")
+
+    @app.signal("websocket.handler.after")
+    async def ws_after(request: Request, websocket: Websocket):
+        app.ctx.seq.append("after")
+        await websocket.send("after: " + await websocket.recv())
+        await websocket.recv()
+
+    @app.signal("websocket.handler.exception")
+    async def ws_exception(
+        request: Request, websocket: Websocket, exception: Exception
+    ):
+        app.ctx.seq.append("exception")
+        await websocket.send(f"exception: {exception}")
+        await websocket.recv()
+
+    @app.websocket("/ws")
+    async def ws_handler(request: Request, ws: Websocket):
+        app.ctx.seq.append("ws")
+
+    @app.websocket("/wserror")
+    async def ws_error(request: Request, ws: Websocket):
+        print("wserr")
+        app.ctx.seq.append("wserror")
+        raise Exception(await ws.recv())
+        print("wserr2")
+
+
+def test_ws_signals(
+    app: Sanic,
+    simple_ws_mimic_client: MimicClientType,
+):
+    signalapp(app)
+
+    app.ctx.seq = []
+    _, ws_proxy = app.test_client.websocket(
+        "/ws", mimic=simple_ws_mimic_client
+    )
+    assert ws_proxy.client_received == ["before: test 1", "after: test 2"]
+    assert app.ctx.seq == ["before", "ws", "after"]
+
+
+def test_ws_signals_exception(
+    app: Sanic,
+    simple_ws_mimic_client: MimicClientType,
+):
+    signalapp(app)
+
+    app.ctx.seq = []
+    _, ws_proxy = app.test_client.websocket(
+        "/wserror", mimic=simple_ws_mimic_client
+    )
+    assert ws_proxy.client_received == ["before: test 1", "exception: test 2"]
+    assert app.ctx.seq == ["before", "wserror", "exception"]

tests/typing/test_typing.py

@@ -1,6 +1,7 @@
 # flake8: noqa: E501
 
 import subprocess
+import sys
 
 from pathlib import Path
 from typing import List, Tuple