Fix binding integer values

Co-authored-by: msvargas <msvargas97@gmail.com>

Author: simolus3

.changeset/plenty-carrots-breathe.md

@@ -0,0 +1,6 @@
+---
+'tauri-plugin-powersync': patch
+'@powersync/tauri-plugin': patch
+---
+
+Fix integer values being bound as doubles to prepared statements.

packages/tauri/src/commands.rs

@@ -138,6 +138,16 @@ impl<'de> Deserialize<'de> for SqliteValue {
                 Ok(SqliteValue::Integer(v))
             }
 
+            fn visit_u64<E>(self, v: u64) -> std::result::Result<Self::Value, E>
+            where
+                E: Error,
+            {
+                // Wrapping cast (v as i64) would silently corrupt values > i64::MAX.
+                i64::try_from(v)
+                    .map(SqliteValue::Integer)
+                    .map_err(E::custom)
+            }
+
             fn visit_f64<E>(self, v: f64) -> std::result::Result<Self::Value, E>
             where
                 E: Error,

packages/tauri/tests/integration.test.ts

@@ -92,3 +92,17 @@ test('can close instances', async () => {
   const second = openDatabase({ schema });
   expect(await second.getAll('SELECT * FROM users')).toHaveLength(0);
 });
+
+test('can bind integers', async () => {
+  const db = openDatabase({ schema });
+  await db.init();
+
+  await db.execute('INSERT INTO users (id, name) VALUES (uuid(), ?)', ['first']);
+  await db.execute('INSERT INTO users (id, name) VALUES (uuid(), ?)', ['second']);
+
+  const { name } = await db.get<{ name: string }>('SELECT name FROM users ORDER BY name LIMIT ?', [1]);
+  expect(name).toStrictEqual('first');
+
+  const row = await db.get<{ a: string; b: string }>('SELECT typeof(?) as a, typeof(?) as b', [123, 1.23]);
+  expect(row).toStrictEqual({ a: 'integer', b: 'real' });
+});