Sanic-testing running asgi server doesn't work with sanic extentions

[micschwarz]

Describe the bug When trying to run an integration test with sanic-testing and sanic-extentions, the test fails with the following exception:

.venv/lib/python3.10/site-packages/httpx/_client.py:1842: in post
    return await self.request(
.venv/lib/python3.10/site-packages/sanic_testing/testing.py:364: in request
    await self.sanic_app._startup()  # type: ignore
.venv/lib/python3.10/site-packages/sanic/app.py:1513: in _startup
    self.ext._display()
.venv/lib/python3.10/site-packages/sanic_ext/bootstrap.py:110: in _display
    f"  > {extension.name} {extension.render_label()}"
.venv/lib/python3.10/site-packages/sanic_ext/extensions/base.py:56: in render_label
    label = self.label()
.venv/lib/python3.10/site-packages/sanic_ext/extensions/openapi/extension.py:25: in label
    return self._make_url()
.venv/lib/python3.10/site-packages/sanic_ext/extensions/openapi/extension.py:34: in _make_url
    else self.app.serve_location

Without sanic-ext the test succeeds.

Code snippet

request, response = await app.asgi_client.post(
    "/",
    json={...},
)

Expected behavior The test does not fail

Environment (please complete the following information):

• OS: Ubuntu 22.04.1 LTS
• Python 3.10.4
• sanic 22.6.1
• sanic-testing: 22.6.0
• sanic-ext installed via sanic[ext]

[micschwarz]

Another piece of info: I'm using blueprints for the routes

[ahopkins]

Thanks for reporting. This is a known issue I will be pushing out a patch to v22.6 in the coming days: https://github.com/sanic-org/sanic/pull/2522/files