Flutter 集成测试不会运行答案

【问题标题】：Flutter integration tests won't runFlutter 集成测试不会运行
【发布时间】：2018-12-31 09:11:56
【问题描述】：

我正在尝试使用基于此处示例的颤振驱动程序编写一些集成测试：https://flutter.io/testing/。我能够部署应用程序，但我得到的只是等待应用程序响应。我真的不知道还能做什么，因为它只是坐着等待。这是我在终端中看到的。

 flutter drive --target=test_driver/home_category_list_scroll.dart
 Using device Sampson's iPhone.
 Starting application: test_driver/home_category_list_scroll.dart
 Automatically signing iOS for device deployment using specified 
 development team in Xcode project: QDCF25JLN2
 Running pod install...                                       7.2s
 Starting Xcode build...                                          
 ├─Assembling Flutter resources...                   13.0s
 └─Compiling, linking and signing...                  7.5s
 Xcode build done.                                           27.6s
 Installing and launching...                                      
 flutter: Observatory listening on http://127.0.0.1:54774/
 00:00 +0: scrolling performance test (setUpAll)
 [info ] FlutterDriver: Connecting to Flutter application at 
 http://127.0.0.1:54270
 [info ] FlutterDriver: Waiting for application to start
 [info ] FlutterDriver: Waiting for application to start
 [info ] FlutterDriver: Waiting for application to start

这是测试的前几行。

void main() {
group('scrolling performance test', () {
FlutterDriver driver;

setUpAll(() async {
  // Connects to the app
  driver = await FlutterDriver.connect(dartVmServiceUrl: 'http://127.0.0.1:54270');
});

tearDownAll(() async {
  if (driver != null) {
    // Closes the connection
    driver.close();
  }
});

test('measure', () async {

Flutter Doctor 输出：

flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel master, v0.5.8-pre.56, on Mac OS X 10.13.4 17E202, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
[✓] iOS toolchain - develop for iOS devices (Xcode 9.4.1)
[✓] Android Studio (version 3.0)
 ✗ Flutter plugin not installed; this adds Flutter specific functionality.
 ✗ Dart plugin not installed; this adds Dart specific functionality.
[✓] IntelliJ IDEA Community Edition (version 2017.1.6)
[!] VS Code (version 1.24.1)
[✓] Connected devices (1 available)

! Doctor found issues in 1 category.

谢谢你能给我的任何想法。

【问题讨论】：

flutter: Observatory listening on http://127.0.0.1:54774/ 但您已将 vm 服务 url 硬编码为 http://127.0.0.1:54270。
感谢您的回复。我一直在为此苦苦挣扎。当我省略硬编码的网址时。获取 url Platform.environment['VM_SERVICE_URL'] 的调用始终返回 null。我一直无法弄清楚 VM_SERVICE_URL 应该是什么。关于 dartVmServiceUrl 应该是什么的任何想法。感谢您提供的任何帮助！
如果你不考虑它会起作用吗？
不，它不起作用。我收到消息：Could not determine URL to connect to application. Either the VM_SERVICE_URL environment variable should be set, or an explicit URL should be provided to the FlutterDriver.connect() method.
driver = await FlutterDriver.connect(); 应该会找到默认的天文台。如果没有，我将作为健全性测试创建一个新的默认项目（计数器应用程序）并确认提供的集成测试运行。然后从那里去。

标签： flutter flutter-test

【解决方案1】：

您能否检查是否设置了可能覆盖目标文件flutter drive 正在运行的 Xcode 构建配置？我找到了一个similar issue，并为他们设置了集成测试。

【讨论】：