Bug 25176 - UITest freezes and fails with "System.Web.Exception: The operation has timed out" when there is large string trace to Debug.WriteLine or Console.WriteLine
Summary: UITest freezes and fails with "System.Web.Exception: The operation has timed ...
Status: NEW
Alias: None
Product: TestCloud
Classification: Xamarin
Component: General ()
Version: unspecified
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2014-12-09 06:51 UTC by Seifer
Modified: 2014-12-09 06:55 UTC (History)
1 user (show)

Is this bug a regression?: ---
Last known good build:

A project with reproduce of UITest freeze (10.03 KB, application/zip)
2014-12-09 06:51 UTC, Seifer

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Description Seifer 2014-12-09 06:51:05 UTC
Created attachment 9002 [details]
A project with reproduce of UITest freeze


Steps to reproduce:

1. Make sure there is a trace of a large string (more then 10.000 characters) to Debug.WriteLine or Console.WriteLine in one of Core or UI project's method that is going to be tested
2. Add a UITest so that a method with Debug.WriteLine is used

Expected result:
- Test should pass

Actual result:
- freeze of UITest

Possible time of the fail: 5 minutes 15 seconds

Possible stack trace of the fail:

  at Xamarin.UITest.Utils.ErrorReporting.With (System.Action func, System.Object[] args, System.String memberName) [0x00000] in <filename unknown>:0 
  at Xamarin.UITest.iOS.iOSApp.Tap (System.Func`2 query) [0x00000] in <filename unknown>:0 
  at UITestFreeze.UITest.Test.Freeze () [0x0006d] in /Users/admin/Projects/Playgard/UITestFreeze/UITestFreeze.UITest/Test.cs:34 
  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) [0x00054] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.Reflection/MonoMethod.cs:230 
  at System.Net.WebConnectionStream.Read (System.Byte[] buffer, Int32 offset, Int32 size) [0x00055] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/System/System.Net/WebConnectionStream.cs:337 
  at System.IO.StreamReader.ReadBuffer () [0x0000e] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.IO/StreamReader.cs:395 
  at System.IO.StreamReader.ReadToEnd () [0x0002c] in /private/tmp/source-mono-mac-3.10.0-branch/bockbuild-mono-3.10.0-branch/profiles/mono-mac-xamarin/build-root/mono-3.10.0/mcs/class/corlib/System.IO/StreamReader.cs:583 
  at Xamarin.UITest.Shared.Http.HttpClient.Post (System.String endpoint, System.String arguments, ExceptionPolicy exceptionPolicy, Nullable`1 timeOut) [0x00000] in <filename unknown>:0 


Check a project with the reproduce in the attachment.

Check RootViewController.cs->BigTrace() method for freeze and a few comments


Xamarin Studio
Version 5.5.4 (build 15)
	Mono 3.10.0 ((detached/92c4884)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 310000031

Version: (Business Edition)
Android SDK: /Users/admin/Library/Developer/Xamarin/android-sdk-mac_x86
	Supported Android versions:
		2.1    (API level 7)
		2.2    (API level 8)
		2.3    (API level 10)
		3.1    (API level 12)
		4.0    (API level 14)
		4.0.3  (API level 15)
		4.1    (API level 16)
		4.4    (API level 19)
		4.4.87 (API level 20)
		5.0    (API level 21)
Java SDK: /usr
java version "1.7.0_55"
Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)

Apple Developer Tools
Xcode 6.1.1 (6611)
Build 6A2008a

Version: (Business Edition)
Hash: 840a925
Build date: 2014-11-16 21:03:22-0500


Build Information
Release ID: 505040015
Build date: 2014-11-19 15:32:41-05

Operating System
Mac OS X 10.10.1
Darwin Kernel Version 14.0.0
    Fri Sep 19 00:26:44 PDT 2014
    root:xnu-2782.1.97~2/RELEASE_X86_64 x86_64
Comment 1 Seifer 2014-12-09 06:54:13 UTC
Maybe the issue described on the Forum somehow related: