move workaround to conftest for other test files

Author: bjoaquinc

tests/conftest.py

@@ -1,6 +1,45 @@
+import anyio
 import pytest
+import sse_starlette
+from packaging import version
 
 
 @pytest.fixture
 def anyio_backend():
     return "asyncio"
+
+
+SSE_STARLETTE_VERSION = version.parse(sse_starlette.__version__)
+NEEDS_RESET = SSE_STARLETTE_VERSION < version.parse("3.0.0")
+
+
+@pytest.fixture(autouse=True)
+def reset_sse_app_status():
+    """Reset sse-starlette's global AppStatus singleton before each test.
+
+    AppStatus.should_exit_event is a global asyncio.Event that gets bound to
+    an event loop. This ensures each test gets a fresh Event and prevents
+    RuntimeError("bound to a different event loop") during parallel test
+    execution with pytest-xdist.
+
+    NOTE: This fixture is only necessary for sse-starlette < 3.0.0.
+    Version 3.0+ eliminated the global state issue entirely by using
+    context-local events instead of module-level singletons, providing
+    automatic test isolation without manual cleanup.
+
+    See <https://github.com/sysid/sse-starlette/pull/141> for more details.
+    """
+    if not NEEDS_RESET:
+        yield
+        return
+
+    # lazy import to avoid import errors
+    from sse_starlette.sse import AppStatus
+
+    # Setup: Reset before test
+    AppStatus.should_exit_event = anyio.Event()  # type: ignore[attr-defined]
+
+    yield
+
+    # Teardown: Reset after test to prevent contamination
+    AppStatus.should_exit_event = anyio.Event()  # type: ignore[attr-defined]

tests/shared/test_sse.py

@@ -5,10 +5,8 @@
 import anyio
 import httpx
 import pytest
-import sse_starlette
 from anyio.abc import TaskGroup
 from inline_snapshot import snapshot
-from packaging import version
 from pydantic import AnyUrl
 from starlette.applications import Starlette
 from starlette.requests import Request
@@ -34,42 +32,6 @@
     Tool,
 )
 
-SSE_STARLETTE_VERSION = version.parse(sse_starlette.__version__)
-NEEDS_RESET = SSE_STARLETTE_VERSION < version.parse("3.0.0")
-
-
-@pytest.fixture(autouse=True)
-def reset_sse_app_status():
-    """Reset sse-starlette's global AppStatus singleton before each test.
-
-    AppStatus.should_exit_event is a global asyncio.Event that gets bound to
-    an event loop. This ensures each test gets a fresh Event and prevents
-    RuntimeError("bound to a different event loop") during parallel test
-    execution with pytest-xdist.
-
-    NOTE: This fixture is only necessary for sse-starlette < 3.0.0.
-    Version 3.0+ eliminated the global state issue entirely by using
-    context-local events instead of module-level singletons, providing
-    automatic test isolation without manual cleanup.
-
-    See <https://github.com/sysid/sse-starlette/pull/141> for more details.
-    """
-    if not NEEDS_RESET:
-        yield
-        return
-
-    # lazy import to avoid import errors
-    from sse_starlette.sse import AppStatus
-
-    # Setup: Reset before test
-    AppStatus.should_exit_event = anyio.Event()  # type: ignore[attr-defined]
-
-    yield
-
-    # Teardown: Reset after test to prevent contamination
-    AppStatus.should_exit_event = anyio.Event()  # type: ignore[attr-defined]
-
-
 SERVER_NAME = "test_server_for_SSE"
 TEST_SERVER_HOST = "testserver"
 TEST_SERVER_BASE_URL = f"http://{TEST_SERVER_HOST}"