test: simplify mocks and localize test fixtures

Replace shared HTTPX and DNS fixtures with targeted unittest.mock
patches close to the tests that need them.

Keep conftest focused on application and client setup, while moving
receiver-specific helpers into the receiver test module.

1 files changed, 1 insertions, 121 deletions

diff --git a/tests/conftest.py b/tests/conftest.py
index f1ef4b5..45658b4 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,8 +1,5 @@
-import uuid
-from collections.abc import Callable, Iterator
-from types import ModuleType
+from collections.abc import Iterator
 
-import httpx
 import pytest
 from flask import Flask
 from flask.testing import FlaskClient
@@ -10,29 +7,10 @@ from flask.testing import FlaskClient
 from webmentions_ssg import DATABASE as db
 from webmentions_ssg import create_app
 from webmentions_ssg.config import TestingConfig
-from webmentions_ssg.models import ReceivedWebmention
-
-HTTPHandler = Callable[
-    [httpx.Request],
-    httpx.Response,
-]
-
-
-class FakeHostAnswers:
-    def __init__(self, *addresses: str):
-        self._addresses = addresses
-
-    def addresses(self):
-        return iter(self._addresses)
 
 
 @pytest.fixture
 def app() -> Iterator[Flask]:
-    """
-    Create a new Flask application and in-memory database
-    for every test.
-    """
-
     application = create_app(TestingConfig)
 
     with application.app_context():
@@ -49,101 +27,3 @@ def app() -> Iterator[Flask]:
 @pytest.fixture
 def client(app: Flask) -> FlaskClient:
     return app.test_client()
-
-
-@pytest.fixture
-def receiver_module(app: Flask) -> ModuleType:
-    """
-    Ensure the application and Huey extension are initialized
-    before retrieving the tasks module.
-    """
-
-    from webmentions_ssg.tasks import receiver
-
-    return receiver
-
-
-@pytest.fixture
-def views_module(app: Flask) -> ModuleType:
-    from webmentions_ssg import views
-
-    return views
-
-
-@pytest.fixture
-def make_webmention(
-    app: Flask,
-) -> Callable[..., uuid.UUID]:
-    def create(
-        *,
-        source: str = "https://source.example/post",
-        target: str = ("https://dennisfink.me/blog/example/"),
-        status: str = "received",
-        failure_reason: str | None = None,
-    ) -> uuid.UUID:
-        identifier = uuid.uuid7()
-
-        with app.app_context():
-            webmention = ReceivedWebmention(
-                uuid=identifier,
-                source=source,
-                target=target,
-                status=status,
-                failure_reason=failure_reason,
-            )
-
-            db.session.add(webmention)
-            db.session.commit()
-
-        return identifier
-
-    return create
-
-
-@pytest.fixture
-def install_httpx_mock(
-    monkeypatch: pytest.MonkeyPatch,
-    receiver_module: ModuleType,
-) -> Callable[[HTTPHandler], None]:
-    """
-    Replace the HTTPX transport without replacing HTTPX itself.
-    """
-
-    monkeypatch.setattr(
-        receiver_module,
-        "ensure_public_url",
-        lambda url: None,
-    )
-
-    real_client = httpx.Client
-
-    def install(handler: HTTPHandler) -> None:
-        transport = httpx.MockTransport(handler)
-
-        def create_client(
-            *args,
-            **kwargs,
-        ) -> httpx.Client:
-            return real_client(
-                *args,
-                transport=transport,
-                **kwargs,
-            )
-
-        monkeypatch.setattr(
-            receiver_module.httpx,
-            "Client",
-            create_client,
-        )
-
-    return install
-
-
-@pytest.fixture
-def public_dns(
-    monkeypatch: pytest.MonkeyPatch,
-) -> None:
-    monkeypatch.setattr(
-        "webmentions_ssg.url_security.dns.resolver.resolve_name",
-        lambda hostname: FakeHostAnswers("93.184.216.34"),
-    )