ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter3/user-memory/test_consolidate_created_at.py

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+import pytest
+from memory_manager import NotesMemoryManager, MemoryNote
+
+def test_consolidate_memories_preserves_earliest_created_at():
+    """Verify deduplicating identical memory notes retains the earliest created_at timestamp."""
+    mgr = NotesMemoryManager(user_id="test_created_at_user")
+    mgr.notes = [
+        MemoryNote(
+            note_id="note_old",
+            content="User prefers Python for AI development",
+            session_id="s1",
+            created_at="2026-01-01T10:00:00",
+            updated_at="2026-01-01T10:00:00",
+            tags=["pref"]
+        ),
+        MemoryNote(
+            note_id="note_new",
+            content="User prefers Python for AI development",
+            session_id="s2",
+            created_at="2026-01-10T15:00:00",
+            updated_at="2026-01-10T15:00:00",
+            tags=["language"]
+        )
+    ]
+
+    report = mgr.consolidate_memories(resolve_conflicts=False)
+
+    assert len(mgr.notes) == 1
+    assert mgr.notes[0].created_at == "2026-01-01T10:00:00"
+    assert mgr.notes[0].updated_at == "2026-01-10T15:00:00"
+    assert mgr.notes[0].tags == ["language", "pref"]