46 lines
2.0 KiB
TypeScript
46 lines
2.0 KiB
TypeScript
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
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import { newFixture, type Fixture } from '../helpers/fixture.js';
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let fixture: Fixture;
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beforeEach(async () => {
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vi.resetModules();
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fixture = await newFixture([]);
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});
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afterEach(async () => { await fixture.cleanup(); });
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describe('prepared statement caching', () => {
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it('reuses statements with fresh parameters and remains usable after rollback', async () => {
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const { db } = await import('../../src/lib/server/db/index.js');
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const insertSql = 'INSERT INTO settings (key, value) VALUES (?, ?)';
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const selectSql = 'SELECT value FROM settings WHERE key = ?';
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const insert = db().prepare(insertSql);
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const select = db().prepare(selectSql);
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insert.run('cache-first', 'one');
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expect(() => db().transaction(() => {
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db().prepare(insertSql).run('cache-rollback', 'discarded');
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throw new Error('rollback');
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})()).toThrow('rollback');
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db().prepare(insertSql).run('cache-second', 'two');
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expect(db().prepare(insertSql)).toBe(insert);
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expect(db().prepare(selectSql)).toBe(select);
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expect(select.get('cache-first')).toEqual({ value: 'one' });
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expect(select.get('cache-second')).toEqual({ value: 'two' });
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expect(select.get('cache-rollback')).toBeUndefined();
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});
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it('prepares fresh statements when the connection is reopened', async () => {
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const { db, closeDb } = await import('../../src/lib/server/db/index.js');
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const sql = 'SELECT value FROM settings WHERE key = ?';
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const oldStatement = db().prepare(sql);
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db().prepare('INSERT INTO settings (key, value) VALUES (?, ?)').run('cache-persisted', 'saved');
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closeDb();
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const statement = db().prepare(sql);
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expect(statement).not.toBe(oldStatement);
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expect(statement.database).not.toBe(oldStatement.database);
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expect(statement.get('cache-persisted')).toEqual({ value: 'saved' });
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expect(db().prepare(sql)).toBe(statement);
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});
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});
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