chore: import upstream snapshot with attribution

showcase/shared/python/tests/test_cross_package_equivalence.py

@@ -0,0 +1,110 @@
+"""Cross-package equivalence test.
+
+Verifies that all showcase packages' backend tools produce structurally
+equivalent outputs when given identical inputs.
+"""
+
+import pytest
+from tools import (
+    get_weather_impl,
+    query_data_impl,
+    manage_sales_todos_impl,
+    get_sales_todos_impl,
+    search_flights_impl,
+    generate_a2ui_impl,
+    schedule_meeting_impl,
+)
+
+# These tests verify the SHARED implementations. Since all 17 packages
+# wrap these same functions, if the shared impls are correct, all
+# packages produce equivalent outputs.
+
+
+class TestToolOutputEquivalence:
+    """All tools return consistent structures regardless of caller."""
+
+    def test_weather_consistent_structure(self):
+        cities = ["Tokyo", "London", "New York", "São Paulo", "Sydney"]
+        for city in cities:
+            result = get_weather_impl(city)
+            assert set(result.keys()) == {
+                "city",
+                "temperature",
+                "humidity",
+                "wind_speed",
+                "feels_like",
+                "conditions",
+            }
+            assert result["city"] == city
+            assert isinstance(result["temperature"], int)
+
+    def test_query_data_consistent_columns(self):
+        for query in ["revenue", "expenses", "all", ""]:
+            result = query_data_impl(query)
+            assert len(result) > 0
+            for row in result:
+                assert "category" in row or "date" in row
+
+    def test_manage_todos_idempotent_structure(self):
+        input_todos = [
+            {"title": "Deal A", "stage": "prospect", "value": 10000},
+            {"title": "Deal B", "stage": "qualified", "value": 50000},
+        ]
+        result = manage_sales_todos_impl(input_todos)
+        assert len(result) == 2
+        for todo in result:
+            assert all(
+                k in todo
+                for k in [
+                    "id",
+                    "title",
+                    "stage",
+                    "value",
+                    "dueDate",
+                    "assignee",
+                    "completed",
+                ]
+            )
+
+    def test_get_todos_none_returns_initial(self):
+        result = get_sales_todos_impl(None)
+        assert len(result) == 3
+        assert all(t["id"].startswith("st-") for t in result)
+
+    def test_search_flights_returns_a2ui_ops(self):
+        flights = [
+            {
+                "airline": "Test",
+                "flightNumber": "T1",
+                "origin": "SFO",
+                "destination": "JFK",
+                "date": "Mon",
+                "departureTime": "08:00",
+                "arrivalTime": "16:00",
+                "duration": "8h",
+                "status": "On Time",
+                "statusColor": "#22c55e",
+                "price": "$300",
+                "currency": "USD",
+                "airlineLogo": "https://example.com/logo.png",
+            }
+        ]
+        result = search_flights_impl(flights)
+        assert "a2ui_operations" in result
+        ops = result["a2ui_operations"]
+        assert any(op["type"] == "create_surface" for op in ops)
+        assert any(op["type"] == "update_components" for op in ops)
+
+    def test_generate_a2ui_returns_prompt_and_schema(self):
+        result = generate_a2ui_impl(
+            messages=[{"role": "user", "content": "show dashboard"}]
+        )
+        assert "system_prompt" in result
+        assert "tool_schema" in result
+        assert result["tool_schema"]["name"] == "render_a2ui"
+
+    def test_schedule_meeting_returns_pending(self):
+        result = schedule_meeting_impl("quarterly review", 45)
+        assert result["status"] == "pending_approval"
+        assert result["reason"] == "quarterly review"
+        assert result["duration_minutes"] == 45