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the-nexus/nexus/mnemosyne/tests/test_resonance.py
Claude (Opus 4.6) 72d9c1a303
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[claude] Mnemosyne Memory Resonance — latent connection discovery (#1272) (#1274)
2026-04-12 11:18:54 +00:00

139 lines
5.3 KiB
Python

"""Tests for MnemosyneArchive.resonance() — latent connection discovery."""
import tempfile
from pathlib import Path
import pytest
from nexus.mnemosyne.archive import MnemosyneArchive
from nexus.mnemosyne.ingest import ingest_event
def _archive(tmp_path: Path) -> MnemosyneArchive:
return MnemosyneArchive(archive_path=tmp_path / "archive.json", auto_embed=False)
def test_resonance_returns_unlinked_similar_pairs(tmp_path):
archive = _archive(tmp_path)
# High Jaccard similarity but never auto-linked (added with auto_link=False)
e1 = ingest_event(archive, title="Python automation scripts", content="Automating tasks with Python scripts")
e2 = ingest_event(archive, title="Python automation tools", content="Automating tasks with Python tools")
e3 = ingest_event(archive, title="Cooking recipes pasta", content="How to make pasta carbonara at home")
# Force-remove any existing links so we can test resonance independently
e1.links = []
e2.links = []
e3.links = []
archive._save()
pairs = archive.resonance(threshold=0.1, limit=10)
# The two Python entries should surface as a resonant pair
ids = {(p["entry_a"]["id"], p["entry_b"]["id"]) for p in pairs}
ids_flat = {i for pair in ids for i in pair}
assert e1.id in ids_flat and e2.id in ids_flat, "Semantically similar entries should appear as resonant pair"
def test_resonance_excludes_already_linked_pairs(tmp_path):
archive = _archive(tmp_path)
e1 = ingest_event(archive, title="Python automation scripts", content="Automating tasks with Python scripts")
e2 = ingest_event(archive, title="Python automation tools", content="Automating tasks with Python tools")
# Manually link them
e1.links = [e2.id]
e2.links = [e1.id]
archive._save()
pairs = archive.resonance(threshold=0.0, limit=100)
for p in pairs:
a_id = p["entry_a"]["id"]
b_id = p["entry_b"]["id"]
assert not (a_id == e1.id and b_id == e2.id), "Already-linked pair should be excluded"
assert not (a_id == e2.id and b_id == e1.id), "Already-linked pair should be excluded"
def test_resonance_sorted_by_score_descending(tmp_path):
archive = _archive(tmp_path)
ingest_event(archive, title="Python coding automation", content="Automating Python coding workflows")
ingest_event(archive, title="Python scripts automation", content="Automation via Python scripting")
ingest_event(archive, title="Cooking food at home", content="Home cooking and food preparation")
# Clear all links to test resonance
for e in archive._entries.values():
e.links = []
archive._save()
pairs = archive.resonance(threshold=0.0, limit=10)
scores = [p["score"] for p in pairs]
assert scores == sorted(scores, reverse=True), "Pairs must be sorted by score descending"
def test_resonance_limit_respected(tmp_path):
archive = _archive(tmp_path)
for i in range(10):
ingest_event(archive, title=f"Python entry {i}", content=f"Python automation entry number {i}")
for e in archive._entries.values():
e.links = []
archive._save()
pairs = archive.resonance(threshold=0.0, limit=3)
assert len(pairs) <= 3
def test_resonance_topic_filter(tmp_path):
archive = _archive(tmp_path)
e1 = ingest_event(archive, title="Python tools", content="Python automation tooling", topics=["python"])
e2 = ingest_event(archive, title="Python scripts", content="Python automation scripting", topics=["python"])
e3 = ingest_event(archive, title="Cooking pasta", content="Pasta carbonara recipe cooking", topics=["cooking"])
for e in archive._entries.values():
e.links = []
archive._save()
pairs = archive.resonance(threshold=0.0, limit=20, topic="python")
for p in pairs:
a_topics = [t.lower() for t in p["entry_a"]["topics"]]
b_topics = [t.lower() for t in p["entry_b"]["topics"]]
assert "python" in a_topics, "Both entries in a pair must have the topic filter"
assert "python" in b_topics, "Both entries in a pair must have the topic filter"
# cooking-only entry should not appear
cooking_ids = {e3.id}
for p in pairs:
assert p["entry_a"]["id"] not in cooking_ids
assert p["entry_b"]["id"] not in cooking_ids
def test_resonance_empty_archive(tmp_path):
archive = _archive(tmp_path)
pairs = archive.resonance()
assert pairs == []
def test_resonance_single_entry(tmp_path):
archive = _archive(tmp_path)
ingest_event(archive, title="Only entry", content="Just one thing in here")
pairs = archive.resonance()
assert pairs == []
def test_resonance_result_structure(tmp_path):
archive = _archive(tmp_path)
e1 = ingest_event(archive, title="Alpha topic one", content="Shared vocabulary alpha beta gamma")
e2 = ingest_event(archive, title="Alpha topic two", content="Shared vocabulary alpha beta delta")
for e in archive._entries.values():
e.links = []
archive._save()
pairs = archive.resonance(threshold=0.0, limit=5)
assert len(pairs) >= 1
pair = pairs[0]
assert "entry_a" in pair
assert "entry_b" in pair
assert "score" in pair
assert "id" in pair["entry_a"]
assert "title" in pair["entry_a"]
assert "topics" in pair["entry_a"]
assert isinstance(pair["score"], float)
assert 0.0 <= pair["score"] <= 1.0