Chore: Move the search tests onto the shared indexing fixtures (#14159)

src/documents/tests/conftest.py

@@ -182,3 +182,15 @@ def faker_session_locale():
 @pytest.fixture(scope="session", autouse=True)
 def faker_seed():
     return 12345
+
+
+@pytest.fixture
+def indexed_document(_search_index: None) -> "Document":
+    """One searchable document, for tests about what the search endpoint
+    returns rather than about what it finds.
+    """
+    from documents.search import get_backend
+
+    doc = DocumentFactory.create(title="quarterly invoice", content="acme corp")
+    get_backend().add_or_update(doc)
+    return doc