在运行适用于Android的Xamarin UI测试时,等待ClearAppData2的结果超时

Question

我已经使用Xamarin UITest框架为我的Xamarin应用程序创建了自动Android和iOS UI测试.在本地运行测试时,它们工作正常,但在Bitrise CI上运行时,iOS测试运行正常,但Android UI测试仍然失败,出现以下异常:

StartFirstActivity_WaitForActivity_ExpectButtonToHaveText
SetUp : System.Exception : Timed out waiting for result of ClearAppData2
Stack trace:
  at Xamarin.UITest.Shared.Android.Commands.CommandAdbClearAppData.Execute (IProcessRunner processRunner, IAndroidSdkTools androidSdkTools) <0x38b3e90 + 0x0064b> in <filename unknown>:0 
  at Xamarin.UITest.Shared.Execution.Executor.Execute[TDep1,TDep2] (ICommand2 command) <0x32b6478 + 0x00092> in <filename unknown>:0 
  at Xamarin.UITest.Shared.Android.LocalAndroidAppLifeCycle.EnsureInstalled (Xamarin.UITest.Shared.Android.ApkFile appApkFile, Xamarin.UITest.Shared.Android.ApkFile testServerApkFile) <0x37418c8 + 0x0017a> in <filename unknown>:0 
  at Xamarin.UITest.Android.AndroidApp..ctor (IAndroidAppConfiguration appConfiguration) <0x31a15e8 + 0x0047a> in <filename unknown>:0 
  at Xamarin.UITest.Configuration.AndroidAppConfigurator.StartApp (AppDataMode appDataMode) <0x30b4298 + 0x00063> in <filename unknown>:0 
  at SightPlayer.Core.Test.AppInitializer.StartApp (Platform platform) <0x30b2448 + 0x000ef> in <filename unknown>:0 
  at SightPlayer.Core.Test.Tests.BeforeEachTest () <0x30b23f8 + 0x00013> in <filename unknown>:0 
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) <0x30b2208 + 0x00093> in <filename unknown>:0

Android测试使用Xamarin.UITest 1.3.5版运行.这很重要,因为在版本1.3.3之前似乎存在一个错误.我也尝试忽略失败的测试,但随后测试运行器因其他Android测试而失败.有趣的是,有时单个测试通过.

以前有人遇到过这种行为吗？你对如何解决这个问题有什么建议吗？

在反编译CommandAdbClearAppData(抛出异常)时,我明白了

// ISSUE: reference to a compiler-generated field
string str1 = string.Format("/data/data/{0}/files/calabash_failure.out", (object)executeCAnonStorey0.svr);
// ISSUE: reference to a compiler-generated field
string str2 = string.Format("/data/data/{0}/files/calabash_finished.out", (object)executeCAnonStorey0.svr);
while (DateTime.UtcNow < utcNow + TimeSpan.FromSeconds(10.0))
{
    if (func(string.Format("ls {0}", (object)str1)).Output.Trim().Equals(str1))
        throw new Exception("Clear app data failed with " + func(string.Format("cat {0}", (object)str1)).Output);
    if (func(string.Format("ls {0}", (object)str2)).Output.Trim().Equals(str2) && func(string.Format("cat {0}", (object)str2)).Output.Trim().Equals("SUCCESSFUL"))
        return;
}
throw new Exception("Timed out waiting for result of ClearAppData2");

表示在十秒内无法找到生成的文件.可能是,模拟器太慢了,模拟器创建这些文件的时间超过十秒？

Answer 1

我认为你需要看一些配置

如果您的应用程序没有等待启动测试，您可以实施WaitTimes.

创建一个像这样的类：

public class WaitTimes : IWaitTimes
{
    public TimeSpan GestureWaitTimeout
    {
        get { return TimeSpan.FromMinutes(1); }
    }

    public TimeSpan WaitForTimeout
    {
        get { return TimeSpan.FromMinutes(1); }
    }
}

然后像这样实现它：

_app = ConfigureApp 
    .Android
    .EnableLocalScreenshots()
    .ApkFile(apkFile)
    .DeviceSerial("###")
    .ApiKey("###")
    .Debug()
    .WaitTimes(new WaitTimes()) 
    .StartApp();

否则，您可以等待特定元素加载，如下所示：

_app.WaitForElement(c => c.Marked("Login"), "Time out expired", TimeSpan.FromSeconds(15));
var result = _app.Query(c => c.Marked("Login"));
Assert.AreEqual(1,result.Length);
_app.Screenshot("Test passed with success");

以下是有关 WaitTime 和 WaitForElement 的更多信息，可能会有所帮助。