dev/integration_tests/web/lib/assertion_test.dart

// Copyright 2014 The Flutter Authors. 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:js_interop';

import 'package:flutter/foundation.dart';
import 'package:web/web.dart' as web;

Future<void> main() async  {
  bool executedAssert = false;
  assert(() {
    executedAssert = true;
    return true;
  }());

  final StringBuffer output = StringBuffer();
  if (executedAssert == kDebugMode) {
    output.write('--- TEST SUCCEEDED ---');
  } else {
    output.write('--- TEST FAILED ---');
  }

  await web.window.fetch(
    '/test-result'.toJS,
    web.RequestInit(
      method: 'POST',
      body: '$output'.toJS,
    )
  ).toDart;
  print(output);
}