Add regression corpus and opt-in catalog test route

tests/test_api.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from fastapi.testclient import TestClient
 
-from app.main import app
+from app.main import app, create_app
 
 client = TestClient(app)
 
@@ -47,3 +47,47 @@ def test_empty_message_list_is_valid() -> None:
 def test_unknown_request_fields_are_rejected() -> None:
     response = client.post("/match", json={"messages": [], "debug": True})
     assert response.status_code == 422
+
+
+def test_opt_in_info_route_returns_catalog_item() -> None:
+    test_app = create_app(enable_test_info_route=True)
+    test_client = TestClient(test_app)
+
+    assert [route.path for route in test_app.routes] == [
+        "/match",
+        "/get_info_by/{sku}",
+    ]
+
+    response = test_client.get("/get_info_by/bit-0073")
+    assert response.status_code == 200
+    assert set(response.json()) == {"sku", "name", "unit", "price"}
+    assert response.json()["sku"] == "BIT-0073"
+    assert response.json()["name"]
+    assert response.json()["unit"]
+    assert float(response.json()["price"]) > 0
+
+
+def test_opt_in_info_route_returns_404_for_unknown_sku() -> None:
+    test_client = TestClient(create_app(enable_test_info_route=True))
+
+    response = test_client.get("/get_info_by/UNKNOWN-0000")
+
+    assert response.status_code == 404
+    assert response.json() == {"detail": "SKU not found"}
+
+
+def test_opt_in_routes_allow_requests_from_local_html_page() -> None:
+    test_client = TestClient(create_app(enable_test_info_route=True))
+    response = test_client.options(
+        "/match",
+        headers={
+            "Origin": "null",
+            "Access-Control-Request-Method": "POST",
+            "Access-Control-Request-Headers": "content-type",
+        },
+    )
+
+    assert response.status_code == 200
+    assert response.headers["access-control-allow-origin"] == "*"
+    assert "POST" in response.headers["access-control-allow-methods"]
+    assert "GET" in response.headers["access-control-allow-methods"]