pkg/wasm/test/fn_call_error_test.dart

// Copyright (c) 2021, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'dart:typed_data';

// Test error thrown when a function is called with the wrong args.

import 'package:test/test.dart';
import 'package:wasm/wasm.dart';

void main() {
  test('function with wrong arguments', () {
    // int64_t square(int64_t n) { return n * n; }
    var data = Uint8List.fromList([
      0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x06, 0x01, 0x60, //
      0x01, 0x7e, 0x01, 0x7e, 0x03, 0x02, 0x01, 0x00, 0x04, 0x05, 0x01, 0x70,
      0x01, 0x01, 0x01, 0x05, 0x03, 0x01, 0x00, 0x02, 0x06, 0x08, 0x01, 0x7f,
      0x01, 0x41, 0x80, 0x88, 0x04, 0x0b, 0x07, 0x13, 0x02, 0x06, 0x6d, 0x65,
      0x6d, 0x6f, 0x72, 0x79, 0x02, 0x00, 0x06, 0x73, 0x71, 0x75, 0x61, 0x72,
      0x65, 0x00, 0x00, 0x0a, 0x09, 0x01, 0x07, 0x00, 0x20, 0x00, 0x20, 0x00,
      0x7e, 0x0b,
    ]);

    var inst = WasmModule(data).instantiate().build();
    var fn = inst.lookupFunction('square');

    expect(() => fn(), throwsA(isArgumentError));
    expect(() => fn(1, 2, 3), throwsA(isArgumentError));
    expect(() => fn(1.23), throwsA(isArgumentError));
  });
}