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참고/neo4j-graphrag-python-main/tests/unit/test_message_history.py

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+#  Copyright (c) "Neo4j"
+#  Neo4j Sweden AB [https://neo4j.com]
+#  #
+#  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
+#  #
+#      https://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.
+from unittest.mock import MagicMock
+
+import pytest
+from neo4j_graphrag.message_history import InMemoryMessageHistory, Neo4jMessageHistory
+from neo4j_graphrag.types import LLMMessage
+from pydantic import ValidationError
+
+
+def test_in_memory_message_history_add_message() -> None:
+    message_history = InMemoryMessageHistory()
+    message_history.add_message(
+        LLMMessage(role="user", content="may thy knife chip and shatter")
+    )
+    assert len(message_history.messages) == 1
+    assert message_history.messages[0]["role"] == "user"
+    assert message_history.messages[0]["content"] == "may thy knife chip and shatter"
+
+
+def test_in_memory_message_history_add_messages() -> None:
+    message_history = InMemoryMessageHistory()
+    message_history.add_messages(
+        [
+            LLMMessage(role="user", content="may thy knife chip and shatter"),
+            LLMMessage(
+                role="assistant",
+                content="He who controls the spice controls the universe.",
+            ),
+        ]
+    )
+    assert len(message_history.messages) == 2
+    assert message_history.messages[0]["role"] == "user"
+    assert message_history.messages[0]["content"] == "may thy knife chip and shatter"
+    assert message_history.messages[1]["role"] == "assistant"
+    assert (
+        message_history.messages[1]["content"]
+        == "He who controls the spice controls the universe."
+    )
+
+
+def test_in_memory_message_history_clear() -> None:
+    message_history = InMemoryMessageHistory()
+    message_history.add_messages(
+        [
+            LLMMessage(role="user", content="may thy knife chip and shatter"),
+            LLMMessage(
+                role="assistant",
+                content="He who controls the spice controls the universe.",
+            ),
+        ]
+    )
+    assert len(message_history.messages) == 2
+    message_history.clear()
+    assert len(message_history.messages) == 0
+
+
+def test_neo4j_message_history_invalid_session_id(driver: MagicMock) -> None:
+    with pytest.raises(ValidationError) as exc_info:
+        Neo4jMessageHistory(session_id=1.5, driver=driver, window=1)  # type: ignore[arg-type]
+    assert "Input should be a valid string" in str(exc_info.value)
+
+
+def test_neo4j_message_history_invalid_driver() -> None:
+    with pytest.raises(ValidationError) as exc_info:
+        Neo4jMessageHistory(session_id="123", driver=1.5, window=1)  # type: ignore[arg-type]
+    assert "Input should be an instance of Driver" in str(exc_info.value)
+
+
+def test_neo4j_message_history_invalid_window(driver: MagicMock) -> None:
+    with pytest.raises(ValidationError) as exc_info:
+        Neo4jMessageHistory(session_id="123", driver=driver, window=-1)
+    assert "Input should be greater than 0" in str(exc_info.value)
+
+
+def test_neo4j_message_history_messages_setter(driver: MagicMock) -> None:
+    message_history = Neo4jMessageHistory(session_id="123", driver=driver)
+    with pytest.raises(NotImplementedError) as exc_info:
+        message_history.messages = [
+            LLMMessage(role="user", content="may thy knife chip and shatter"),
+        ]
+    assert (
+        str(exc_info.value)
+        == "Direct assignment to 'messages' is not allowed. Use the 'add_messages' instead."
+    )
+
+
+def test_neo4j_message_history_messages_getter_custom_db(driver: MagicMock) -> None:
+    driver.execute_query.side_effect = [
+        MagicMock(records=[]),
+        MagicMock(
+            records=[{"result": {"data": {"content": "my message"}, "role": "user"}}]
+        ),
+    ]
+    message_history = Neo4jMessageHistory(
+        session_id="123", driver=driver, database="my_db"
+    )
+    messages = message_history.messages
+    assert len(messages) == 1
+    assert messages[0] == LLMMessage(content="my message", role="user")
+    for c in driver.execute_query.call_args_list:
+        assert c.kwargs["database_"] == "my_db"