ci: add integration tests

Author: wellwelwel

test/integration/regressions/test-#4126.test.mts

@@ -0,0 +1,83 @@
+import type { ResultSetHeader, RowDataPacket } from '../../../index.js';
+import { describe, it, strict } from 'poku';
+import { createConnection, createPool } from '../../common.test.mjs';
+
+type DomainRow = RowDataPacket & { id: number; domain: string };
+type DocRow = RowDataPacket & { id: number; foo: string; hasModified: number };
+
+await describe('Regression #4126 — object placeholders expand in SET assignment lists', async () => {
+  await describe('client-side formatting', async () => {
+    const connection = createConnection();
+
+    it('should expand ?? and ? object inside SET STATEMENT ... FOR INSERT', () => {
+      strict.equal(
+        connection.format(
+          'SET STATEMENT max_statement_time=15 FOR INSERT INTO ?? SET ?',
+          ['domains', { id: 1, domain: 'test.com' }]
+        ),
+        "SET STATEMENT max_statement_time=15 FOR INSERT INTO `domains` SET `id` = 1, `domain` = 'test.com'"
+      );
+    });
+
+    it('should expand ? object after UTC_TIMESTAMP() in an UPDATE SET list', () => {
+      strict.equal(
+        connection.format(
+          'UPDATE docs SET modified = UTC_TIMESTAMP(), ? WHERE id = ?',
+          [{ foo: 'bar' }, 123]
+        ),
+        "UPDATE docs SET modified = UTC_TIMESTAMP(), `foo` = 'bar' WHERE id = 123"
+      );
+    });
+
+    connection.end();
+  });
+
+  await describe('end-to-end execution', async () => {
+    const pool = createPool({ connectionLimit: 1 }).promise();
+
+    await it('should insert via object-form query with ??, ? object and timeout', async () => {
+      await pool.query(
+        'CREATE TEMPORARY TABLE domains (id INT PRIMARY KEY, domain VARCHAR(255))'
+      );
+
+      const [result] = await pool.query<ResultSetHeader>({
+        sql: 'INSERT INTO ?? SET ?',
+        values: ['domains', { id: 1, domain: 'test.com' }],
+        timeout: 16000,
+      });
+
+      strict.equal(result.affectedRows, 1);
+
+      const [rows] = await pool.query<DomainRow[]>(
+        'SELECT id, domain FROM domains'
+      );
+      strict.equal(rows.length, 1);
+      strict.equal(rows[0].id, 1);
+      strict.equal(rows[0].domain, 'test.com');
+    });
+
+    await it('should update via ? object mixed with UTC_TIMESTAMP()', async () => {
+      await pool.query(
+        'CREATE TEMPORARY TABLE docs (id INT PRIMARY KEY, foo VARCHAR(50), modified DATETIME)'
+      );
+      await pool.query('INSERT INTO docs (id, foo) VALUES (123, ?)', ['old']);
+
+      const [result] = await pool.query<ResultSetHeader>(
+        'UPDATE docs SET modified = UTC_TIMESTAMP(), ? WHERE id = ?',
+        [{ foo: 'bar' }, 123]
+      );
+
+      strict.equal(result.affectedRows, 1);
+
+      const [rows] = await pool.query<DocRow[]>(
+        'SELECT id, foo, modified IS NOT NULL AS hasModified FROM docs'
+      );
+
+      strict.equal(rows.length, 1);
+      strict.equal(rows[0].foo, 'bar');
+      strict.equal(rows[0].hasModified, 1);
+    });
+
+    await pool.end();
+  });
+});