update

test/db-prepared.test.js

@@ -0,0 +1,44 @@
+'use strict';
+const assert = require('node:assert');
+const fs = require('node:fs');
+const os = require('node:os');
+const path = require('node:path');
+
+const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'clip-stmt-'));
+process.env.USERPROFILE = tmp;
+process.env.HOME = tmp;
+
+const Database = require('better-sqlite3');
+const dbPath = path.join(tmp, 'history.db');
+const db = new Database(dbPath);
+db.exec(`
+  CREATE TABLE IF NOT EXISTS clips (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    type TEXT NOT NULL, text TEXT, image BLOB, preview TEXT,
+    top_at REAL, created_at REAL NOT NULL
+  );
+`);
+
+let passed = 0;
+function check(name, fn) {
+  try { fn(); console.log('  ok -', name); passed++; }
+  catch (e) { console.error('  FAIL -', name, e.message); process.exitCode = 1; }
+}
+
+const cached = {
+  insert: db.prepare('INSERT INTO clips(type, text, preview, top_at, created_at) VALUES(?, ?, ?, ?, ?)'),
+};
+
+check('prepare reuse returns same statement object (sanity)', () => {
+  const a = db.prepare('SELECT 1');
+  const b = db.prepare('SELECT 1');
+  assert.ok(a !== b, 'sanity: each prepare() returns new object');
+});
+
+check('cached insert works repeatedly', () => {
+  for (let i = 0; i < 5; i++) {
+    cached.insert.run('text', `m${i}`, `p${i}`, null, Date.now()/1000);
+  }
+  const n = db.prepare('SELECT COUNT(*) AS n FROM clips').get().n;
+  assert.strictEqual(n, 5);
+});