test: add pummel test for oversized sqlite SQL text

Signed-off-by: lazerg <lazerg2@gmail.com>
Assisted-by: Claude Code

Author: lazerg

test/pummel/test-sqlite-sql-text-too-long.js

@@ -0,0 +1,45 @@
+'use strict';
+const common = require('../common');
+common.skipIfSQLiteMissing();
+
+if (!common.enoughTestMem)
+  common.skip('intensive SQL text tests due to memory confinements');
+
+const assert = require('node:assert');
+const { constants } = require('node:buffer');
+const dc = require('node:diagnostics_channel');
+const { Database } = require('node:sqlite');
+
+// 'é' is one byte per character in V8 and two bytes in UTF-8.
+const text = 'é'.repeat((constants.MAX_STRING_LENGTH >>> 1) + 1);
+const tooLong = { code: 'ERR_STRING_TOO_LONG', name: 'Error' };
+
+{
+  using db = new Database(':memory:');
+  using stmt = db.prepare(`SELECT length('${text}') AS len`);
+  assert.throws(() => stmt.sourceSQL, tooLong);
+}
+
+{
+  using db = new Database(':memory:');
+  using stmt = db.prepare(`SELECT length('${text}')`);
+  assert.throws(() => stmt.get(), tooLong);
+  assert.throws(() => stmt.all(), tooLong);
+  assert.throws(() => stmt.iterate().next(), tooLong);
+  assert.throws(() => stmt.columns(), tooLong);
+}
+
+{
+  const handler = common.mustNotCall();
+  dc.subscribe('sqlite.db.query', handler);
+  const sql = `SELECT length('${text}') AS a, length(?) AS b`;
+  using db = new Database(':memory:');
+  db.limits.length = Buffer.byteLength(text);
+  using stmt = db.prepare(sql);
+  assert.deepStrictEqual(
+    stmt.get(Buffer.alloc(1)),
+    { __proto__: null, a: text.length, b: 1 },
+  );
+  assert.throws(() => stmt.expandedSQL, { code: 'ERR_SQLITE_ERROR' });
+  dc.unsubscribe('sqlite.db.query', handler);
+}