Add test on better handling for unicode in JS-side prepared statement

packages/duckdb-wasm/test/regression/github_1833.test.ts

@@ -0,0 +1,36 @@
+import * as duckdb from '../../src';
+
+// https://github.com/duckdb/duckdb-wasm/issues/1833
+export function test1833(db: () => duckdb.AsyncDuckDB): void {
+    let conn: duckdb.AsyncDuckDBConnection;
+    beforeEach(async () => {
+        await db().flushFiles();
+        conn = await db().connect();
+    });
+    afterEach(async () => {
+        await conn.close();
+        await db().flushFiles();
+        await db().dropFiles();
+    });
+    describe('GitHub issues', () => {
+        it('1833', async () => {
+        await conn.query(`
+          CREATE TABLE "Test" (value VARCHAR)
+        `);
+        const stmt = await conn.prepare(`
+          INSERT INTO "Test" (value)
+          VALUES (?)
+        `);
+        await stmt.query('🦆🦆🦆🦆🦆');
+        await stmt.query('goo␀se');
+        await stmt.query('goo\u0000se');
+        const result = await conn.query(`
+          SELECT * FROM "Test"
+        `);
+            expect(result.schema.fields.length).toBe(1);
+            expect(result.schema.fields[0].name).toBe('value');
+            expect(result.toArray().length).toEqual(3);
+            expect(result.toArray()[2].value.length).toEqual(6);
+        });
+    });
+}

packages/duckdb-wasm/test/regression/index.ts

@@ -6,6 +6,7 @@ import { test448 } from './github_448.test';
 import { test470 } from './github_470.test';
 import { test477 } from './github_477.test';
 import { test1467 } from './github_1467.test';
+import { test1833 } from './github_1833.test';
 
 export function testRegressionAsync(adb: () => duckdb.AsyncDuckDB): void {
     test332(adb);
@@ -15,4 +16,5 @@ export function testRegressionAsync(adb: () => duckdb.AsyncDuckDB): void {
     test470(adb);
     test477(adb);
     test1467(adb);
+    test1833(adb);
 }