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test_sqlmapper_sqlite3.py
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394 lines (353 loc) · 13 KB
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import os
import sqlite3
import tempfile
import unittest
from dataclasses import dataclass
from sqlmapper import Mapper, MappingError
@dataclass
class UserQuery:
min_id: int
max_id: int
status: str
class UserResult:
def __init__(self):
self.id = None
self.name = None
class NewUser:
def __init__(self, id=None, name=None, status=None):
self.id = id
self.name = name
self.status = status
class UserStatusUpdate:
def __init__(self, id, status, updated_at):
self.id = id
self.status = status
self.updated_at = updated_at
class UserDeleteParam:
def __init__(self, id):
self.id = id
class ResultTypeNeedsArg:
def __init__(self, value):
self.value = value
class TestSQLite3Mapper(unittest.TestCase):
def setUp(self):
self.tempdir = tempfile.TemporaryDirectory(prefix="psm_sqlite3_")
self.db_path = os.path.join(self.tempdir.name, "sample.db")
self.mapper = Mapper(sqlite3, database=self.db_path)
self.mapper.execute(
"""
CREATE TABLE departments (
id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT NOT NULL
)
"""
)
self.mapper.execute(
"""
CREATE TABLE users (
id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT NOT NULL,
status TEXT NOT NULL,
updated_at TEXT,
department_id INTEGER,
used_flag INTEGER NOT NULL DEFAULT 0
)
"""
)
self.mapper.execute(
"""
CREATE TABLE accounts (
id INTEGER PRIMARY KEY,
balance INTEGER NOT NULL
)
"""
)
self.mapper.execute(
"""
CREATE TABLE audit_logs (
job_id INTEGER PRIMARY KEY,
processed INTEGER NOT NULL DEFAULT 0
)
"""
)
sales_id = self.mapper.insert("INSERT INTO departments (name) VALUES (:name)", {"name": "Sales"})
engineering_id = self.mapper.insert("INSERT INTO departments (name) VALUES (:name)", {"name": "Engineering"})
self.alice_id = self.mapper.insert(
"""
INSERT INTO users (name, status, updated_at, department_id, used_flag)
VALUES (:name, :status, :updated_at, :department_id, :used_flag)
""",
{
"name": "Alice",
"status": "active",
"updated_at": "2026-03-01 09:00:00",
"department_id": sales_id,
"used_flag": 0,
},
)
self.bob_id = self.mapper.insert(
"""
INSERT INTO users (name, status, updated_at, department_id, used_flag)
VALUES (:name, :status, :updated_at, :department_id, :used_flag)
""",
{
"name": "Bob",
"status": "active",
"updated_at": "2026-03-01 09:00:00",
"department_id": engineering_id,
"used_flag": 1,
},
)
self.mapper.insert(
"INSERT INTO accounts (id, balance) VALUES (:id, :balance)",
{"id": 1, "balance": 5000},
)
self.mapper.insert(
"INSERT INTO accounts (id, balance) VALUES (:id, :balance)",
{"id": 2, "balance": 1000},
)
self.mapper.insert(
"INSERT INTO audit_logs (job_id, processed) VALUES (:job_id, :processed)",
{"job_id": 1, "processed": 0},
)
self.mapper.commit()
def tearDown(self):
self.mapper.close()
self.tempdir.cleanup()
def test_select_all_accepts_dataclass_and_dict(self):
query = UserQuery(min_id=1, max_id=100, status="active")
rows_from_obj = list(
self.mapper.select_all(
"""
SELECT id, name
FROM users
WHERE id BETWEEN :min_id AND :max_id
AND status = :status
""",
query,
)
)
rows_from_dict = list(
self.mapper.select_all(
"""
SELECT id, name
FROM users
WHERE id BETWEEN :min_id AND :max_id
AND status = :status
""",
{"min_id": 1, "max_id": 100, "status": "active"},
)
)
self.assertEqual(len(rows_from_obj), 2)
self.assertEqual(len(rows_from_dict), 2)
def test_select_all_works_with_buffered_true_and_false(self):
rows_buffered = list(
self.mapper.select_all(
"""
SELECT id, name
FROM users
WHERE status = :status
ORDER BY id
""",
{"status": "active"},
array_size=1,
buffered=True,
)
)
rows_unbuffered = list(
self.mapper.select_all(
"""
SELECT id, name
FROM users
WHERE status = :status
ORDER BY id
""",
{"status": "active"},
array_size=1,
buffered=False,
)
)
self.assertEqual([row.id for row in rows_buffered], [row.id for row in rows_unbuffered])
self.assertEqual([row.name for row in rows_buffered], [row.name for row in rows_unbuffered])
def test_select_one_with_result_type_and_join_alias_dynamic_result(self):
user = self.mapper.select_one(
"SELECT id, name FROM users WHERE id = :id",
{"id": self.alice_id},
result_type=UserResult,
)
self.assertEqual(user.id, self.alice_id)
self.assertEqual(user.name, "Alice")
rows = list(
self.mapper.select_all(
"""
SELECT
u.id AS user_id,
u.name AS user_name,
d.name AS dept_name
FROM users u
JOIN departments d ON d.id = u.department_id
WHERE u.status = :status
ORDER BY u.id
""",
{"status": "active"},
)
)
self.assertEqual(rows[0].user_id, self.alice_id)
self.assertEqual(rows[0].user_name, "Alice")
self.assertEqual(rows[0].dept_name, "Sales")
def test_select_one_returns_none_when_no_rows(self):
row = self.mapper.select_one(
"SELECT id, name FROM users WHERE id = :id",
{"id": 999999},
)
self.assertIsNone(row)
def test_select_one_raises_mapping_error_when_multiple_rows(self):
with self.assertRaises(MappingError):
self.mapper.select_one(
"SELECT id, name FROM users WHERE status = :status",
{"status": "active"},
)
def test_select_one_raises_mapping_error_when_result_type_missing_attribute(self):
with self.assertRaises(MappingError):
self.mapper.select_one(
"SELECT id, status FROM users WHERE id = :id",
{"id": self.alice_id},
result_type=UserResult,
)
def test_select_one_raises_mapping_error_when_bind_variable_missing(self):
with self.assertRaises(MappingError):
self.mapper.select_one(
"SELECT id, name FROM users WHERE id = :id AND status = :status",
{"id": self.alice_id},
)
def test_select_one_raises_mapping_error_when_result_type_requires_args(self):
with self.assertRaises(MappingError):
self.mapper.select_one(
"SELECT id, name FROM users WHERE id = :id",
{"id": self.alice_id},
result_type=ResultTypeNeedsArg,
)
def test_insert_returns_lastrowid_usable_as_model_id(self):
new_user = NewUser(name="Carol", status="active")
new_user.id = self.mapper.insert(
"INSERT INTO users (name, status) VALUES (:name, :status)",
new_user,
)
self.mapper.commit()
self.assertIsInstance(new_user.id, int)
def test_insert_without_rowid_table_can_return_none_or_zero(self):
with tempfile.TemporaryDirectory(prefix="psm_sqlite3_no_rowid_") as tempdir:
db_path = os.path.join(tempdir, "no_rowid.db")
with Mapper(sqlite3, database=db_path) as mapper:
mapper.execute(
"""
CREATE TABLE external_keys (
code TEXT PRIMARY KEY
) WITHOUT ROWID
"""
)
lastrowid = mapper.insert(
"INSERT INTO external_keys (code) VALUES (:code)",
{"code": "A001"},
)
mapper.commit()
self.assertEqual(lastrowid, 0)
def test_update_returns_rowcount_for_optimistic_lock_check(self):
updated_ok = self.mapper.update(
"""
UPDATE users
SET status = :status
WHERE id = :id
AND updated_at = :updated_at
""",
UserStatusUpdate(self.alice_id, "inactive", "2026-03-01 09:00:00"),
)
updated_ng = self.mapper.update(
"""
UPDATE users
SET status = :status
WHERE id = :id
AND updated_at = :updated_at
""",
UserStatusUpdate(self.alice_id, "active", "2099-01-01 00:00:00"),
)
self.mapper.commit()
self.assertEqual(updated_ok, 1)
self.assertEqual(updated_ng, 0)
def test_delete_returns_rowcount_with_business_condition(self):
deleted_bob = self.mapper.delete(
"DELETE FROM users WHERE id = :id AND used_flag = 0",
UserDeleteParam(self.bob_id),
)
deleted_alice = self.mapper.delete(
"DELETE FROM users WHERE id = :id AND used_flag = 0",
UserDeleteParam(self.alice_id),
)
self.mapper.commit()
self.assertEqual(deleted_bob, 0)
self.assertEqual(deleted_alice, 1)
def test_execute_can_run_special_sql(self):
self.mapper.execute("ALTER TABLE users ADD COLUMN profile TEXT")
self.mapper.commit()
columns = list(self.mapper.select_all("PRAGMA table_info(users)"))
self.assertTrue(any(column.name == "profile" for column in columns))
def test_transaction_commit_and_explicit_rollback_on_reused_mapper(self):
self.mapper.update(
"UPDATE accounts SET balance = balance - :amount WHERE id = :from_id",
{"amount": 1000, "from_id": 1},
)
self.mapper.update(
"UPDATE accounts SET balance = balance + :amount WHERE id = :to_id",
{"amount": 1000, "to_id": 2},
)
self.mapper.commit()
jobs = [{"user_id": self.bob_id, "job_id": 1}]
for job in jobs:
try:
self.mapper.update(
"UPDATE users SET status = :status WHERE id = :id",
{"id": job["user_id"], "status": "inactive"},
)
self.mapper.update(
"UPDATE audit_logs SET processed = 1 WHERE job_id = :job_id",
{"job_id": job["job_id"]},
)
raise RuntimeError("simulate failure")
except Exception:
self.mapper.rollback()
account1 = self.mapper.select_one(
"SELECT id, balance FROM accounts WHERE id = :id",
{"id": 1},
)
account2 = self.mapper.select_one(
"SELECT id, balance FROM accounts WHERE id = :id",
{"id": 2},
)
bob = self.mapper.select_one(
"SELECT id, status FROM users WHERE id = :id",
{"id": self.bob_id},
)
log = self.mapper.select_one(
"SELECT job_id, processed FROM audit_logs WHERE job_id = :job_id",
{"job_id": 1},
)
self.assertEqual(account1.balance, 4000)
self.assertEqual(account2.balance, 2000)
self.assertEqual(bob.status, "active")
self.assertEqual(log.processed, 0)
def test_uncommitted_changes_are_rolled_back_when_exiting_with_by_exception(self):
with self.assertRaises(RuntimeError):
with Mapper(sqlite3, database=self.db_path) as mapper:
mapper.update(
"UPDATE users SET status = :status WHERE id = :id",
{"id": self.bob_id, "status": "inactive"},
)
raise RuntimeError("simulate failure")
with Mapper(sqlite3, database=self.db_path) as checker:
user = checker.select_one(
"SELECT id, status FROM users WHERE id = :id",
{"id": self.bob_id},
)
self.assertEqual(user.status, "active")
if __name__ == "__main__":
unittest.main()