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tests/test_database.py
======================
Unit tests for database/db.py — SQLite persistence layer.
"""
import sqlite3
import pytest
from database.db import DatabaseManager
@pytest.fixture
def db():
"""Provide a fresh in-memory database for each test."""
manager = DatabaseManager(":memory:")
yield manager
manager.close()
# ---------------------------------------------------------------------------
# User operations
# ---------------------------------------------------------------------------
class TestUserOperations:
def test_create_and_get_user(self, db):
uid = db.create_user("alice", "$2b$12$fakehash")
assert uid is not None
user = db.get_user("alice")
assert user is not None
assert user["username"] == "alice"
assert user["password_hash"] == "$2b$12$fakehash"
assert user["encrypted_history"] is None
assert user["created_at"] > 0
def test_user_exists(self, db):
assert db.user_exists("alice") is False
db.create_user("alice", "$2b$12$hash")
assert db.user_exists("alice") is True
def test_duplicate_username_raises(self, db):
db.create_user("alice", "$2b$12$hash1")
with pytest.raises(sqlite3.IntegrityError):
db.create_user("alice", "$2b$12$hash2")
def test_get_nonexistent_user_returns_none(self, db):
assert db.get_user("nobody") is None
def test_update_encrypted_history(self, db):
db.create_user("alice", "$2b$12$hash")
assert db.get_user("alice")["encrypted_history"] is None
db.update_encrypted_history("alice", "encrypted-blob-123")
user = db.get_user("alice")
assert user["encrypted_history"] == "encrypted-blob-123"
def test_multiple_users_independent(self, db):
db.create_user("alice", "$2b$hash1")
db.create_user("bob", "$2b$hash2")
alice = db.get_user("alice")
bob = db.get_user("bob")
assert alice["id"] != bob["id"]
assert alice["username"] == "alice"
assert bob["username"] == "bob"
# ---------------------------------------------------------------------------
# Session operations
# ---------------------------------------------------------------------------
class TestSessionOperations:
def _create_user(self, db, username="testuser"):
db.create_user(username, "$2b$12$fakehash")
def test_save_and_get_session(self, db):
self._create_user(db)
sid = db.save_session(
username="testuser",
stress_score=0.75,
stress_label="stress",
temporal_data={"velocity": 0.1, "threshold": 0.6},
interventions=[{"title": "Deep breathing", "category": "breathing"}],
is_crisis=False,
crisis_message=None,
matched_triggers=["work", "stress"],
attention_weights=[0.1, 0.5, 0.3],
)
assert sid is not None
sessions = db.get_sessions("testuser")
assert len(sessions) == 1
s = sessions[0]
assert s["stress_score"] == 0.75
assert s["stress_label"] == "stress"
assert s["temporal_data"] == {"velocity": 0.1, "threshold": 0.6}
assert s["interventions"] == [
{"title": "Deep breathing", "category": "breathing"}
]
assert s["is_crisis"] is False
assert s["crisis_message"] is None
assert s["matched_triggers"] == ["work", "stress"]
assert s["attention_weights"] == [0.1, 0.5, 0.3]
assert s["created_at"] > 0
def test_sessions_ordered_newest_first(self, db):
self._create_user(db)
for i in range(3):
db.save_session(
username="testuser",
stress_score=i * 0.1,
stress_label="no_stress",
temporal_data={},
interventions=[],
is_crisis=False,
crisis_message=None,
matched_triggers=[],
attention_weights=[],
)
sessions = db.get_sessions("testuser")
assert len(sessions) == 3
# newest first (higher id = newer insertion)
assert sessions[0]["id"] > sessions[1]["id"]
assert sessions[1]["id"] > sessions[2]["id"]
def test_get_sessions_pagination(self, db):
self._create_user(db)
for i in range(5):
db.save_session(
username="testuser",
stress_score=i * 0.1,
stress_label="no_stress",
temporal_data={},
interventions=[],
is_crisis=False,
crisis_message=None,
matched_triggers=[],
attention_weights=[],
)
page1 = db.get_sessions("testuser", limit=2, offset=0)
assert len(page1) == 2
page2 = db.get_sessions("testuser", limit=2, offset=2)
assert len(page2) == 2
page3 = db.get_sessions("testuser", limit=2, offset=4)
assert len(page3) == 1
def test_get_session_count(self, db):
self._create_user(db)
assert db.get_session_count("testuser") == 0
db.save_session(
username="testuser",
stress_score=0.5,
stress_label="stress",
temporal_data={},
interventions=[],
is_crisis=False,
crisis_message=None,
matched_triggers=[],
attention_weights=[],
)
assert db.get_session_count("testuser") == 1
def test_sessions_isolated_per_user(self, db):
self._create_user(db, "alice")
self._create_user(db, "bob")
db.save_session(
username="alice",
stress_score=0.9,
stress_label="stress",
temporal_data={},
interventions=[],
is_crisis=False,
crisis_message=None,
matched_triggers=[],
attention_weights=[],
)
assert db.get_session_count("alice") == 1
assert db.get_session_count("bob") == 0
assert db.get_sessions("bob") == []
def test_save_session_nonexistent_user_raises(self, db):
with pytest.raises(ValueError, match="not found"):
db.save_session(
username="nobody",
stress_score=0.5,
stress_label="stress",
temporal_data={},
interventions=[],
is_crisis=False,
crisis_message=None,
matched_triggers=[],
attention_weights=[],
)
def test_get_sessions_nonexistent_user_returns_empty(self, db):
assert db.get_sessions("nobody") == []
def test_get_session_count_nonexistent_user_returns_zero(self, db):
assert db.get_session_count("nobody") == 0
def test_session_crisis_data(self, db):
self._create_user(db)
db.save_session(
username="testuser",
stress_score=0.99,
stress_label="stress",
temporal_data={},
interventions=[],
is_crisis=True,
crisis_message="Please call 988",
matched_triggers=["suicide"],
attention_weights=[0.9],
)
sessions = db.get_sessions("testuser")
assert len(sessions) == 1
assert sessions[0]["is_crisis"] is True
assert sessions[0]["crisis_message"] == "Please call 988"
# ---------------------------------------------------------------------------
# Database lifecycle
# ---------------------------------------------------------------------------
class TestDatabaseLifecycle:
def test_file_based_database(self, tmp_path):
db_path = str(tmp_path / "test.db")
db1 = DatabaseManager(db_path)
db1.create_user("alice", "$2b$hash")
db1.save_session(
username="alice",
stress_score=0.5,
stress_label="stress",
temporal_data={"key": "value"},
interventions=[],
is_crisis=False,
crisis_message=None,
matched_triggers=[],
attention_weights=[],
)
db1.close()
# Re-open the same database — data should persist
db2 = DatabaseManager(db_path)
user = db2.get_user("alice")
assert user is not None
sessions = db2.get_sessions("alice")
assert len(sessions) == 1
assert sessions[0]["stress_score"] == 0.5
db2.close()
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