chore: import upstream snapshot with attribution

contributing/samples/dummy_services.py

@@ -0,0 +1,96 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Dummy service implementations for testing."""
+
+from __future__ import annotations
+
+from datetime import datetime
+from typing import TYPE_CHECKING
+
+from google.adk.memory.base_memory_service import BaseMemoryService
+from google.adk.memory.base_memory_service import SearchMemoryResponse
+from google.adk.memory.memory_entry import MemoryEntry
+from google.genai import types
+from typing_extensions import override
+
+if TYPE_CHECKING:
+  from google.adk.sessions.session import Session
+
+
+class FooMemoryService(BaseMemoryService):
+  """A dummy memory service that returns a fixed response."""
+
+  def __init__(self, uri: str | None = None, **kwargs):
+    """Initializes the foo memory service.
+
+    Args:
+      uri: The service URI.
+      **kwargs: Additional keyword arguments.
+    """
+    del uri, kwargs  # Unused in this dummy implementation.
+
+  @override
+  async def add_session_to_memory(self, session: Session):
+    print('FooMemoryService.add_session_to_memory')
+
+  @override
+  async def search_memory(
+      self, *, app_name: str, user_id: str, query: str
+  ) -> SearchMemoryResponse:
+    print('FooMemoryService.search_memory')
+    return SearchMemoryResponse(
+        memories=[
+            MemoryEntry(
+                content=types.Content(
+                    parts=[types.Part(text='I love ADK from Foo')]
+                ),
+                author='bot',
+                timestamp=datetime.now().isoformat(),
+            )
+        ]
+    )
+
+
+class BarMemoryService(BaseMemoryService):
+  """A dummy memory service that returns a fixed response."""
+
+  def __init__(self, uri: str | None = None, **kwargs):
+    """Initializes the bar memory service.
+
+    Args:
+      uri: The service URI.
+      **kwargs: Additional keyword arguments.
+    """
+    del uri, kwargs  # Unused in this dummy implementation.
+
+  @override
+  async def add_session_to_memory(self, session: Session):
+    print('BarMemoryService.add_session_to_memory')
+
+  @override
+  async def search_memory(
+      self, *, app_name: str, user_id: str, query: str
+  ) -> SearchMemoryResponse:
+    print('BarMemoryService.search_memory')
+    return SearchMemoryResponse(
+        memories=[
+            MemoryEntry(
+                content=types.Content(
+                    parts=[types.Part(text='I love ADK from Bar')]
+                ),
+                author='bot',
+                timestamp=datetime.now().isoformat(),
+            )
+        ]
+    )