Bug 25688 - Debug.Assert not doing anything
Summary: Debug.Assert not doing anything
Status: RESOLVED ANSWERED
Alias: None
Product: iOS
Classification: Xamarin
Component: Debugger ()
Version: XI 8.2.0
Hardware: PC Mac OS
: Normal normal
Target Milestone: Untriaged
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2015-01-02 16:39 UTC by Ian
Modified: 2015-01-05 05:34 UTC (History)
3 users (show)

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

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Status:
RESOLVED ANSWERED

Description Ian 2015-01-02 16:39:54 UTC
To reproduce:

Create a Xamarin Forms app, set the MainPage to:

    public class TestPage : ContentPage
    {
        public TestPage()
        {

           this.Appearing += async (sender, args) =>
           {
               Debug.Assert(false,"I am being ignored");
           };
        }

 
    }
Comment 1 Tajinder Singh 2015-01-05 01:56:50 UTC
we are getting same the behavior as we are seeing 'Debug Assert failed' in application output.

Screencast:  http://screencast.com/t/20TzNQSe

Supplement info:
IDE Log: https://gist.github.com/saurabh360/6bdb0d41b96ed64dfac4
Application output: https://gist.github.com/saurabh360/b637646aad1c28bc26a4

Environment Info:
Xamarin Studio
Version 5.5.4 (build 15)
Installation UUID: d6f15b80-470e-4e50-9aba-38a45c556680
Runtime:
	Mono 3.10.0 ((detached/92c4884)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 310000031

Xamarin.Android
Version: 4.20.0.28 (Business Edition)
Android SDK: /Users/360logica/Desktop/android-sdk-macosx
	Supported Android versions:
		2.1    (API level 7)
		2.2    (API level 8)
		2.3    (API level 10)
		3.1    (API level 12)
		3.2    (API level 13)
		4.0    (API level 14)
		4.0.3  (API level 15)
		4.1    (API level 16)
		4.2    (API level 17)
		4.3    (API level 18)
		4.4    (API level 19)
		4.4.87 (API level 20)
		5.0    (API level 21)
Java SDK: /usr
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)

Apple Developer Tools
Xcode 6.2 (6736)
Build 6C86e

Xamarin.iOS
Version: 8.4.0.47 (Business Edition)
Hash: 7244769
Branch: 
Build date: 2014-12-11 14:54:30-0500

Xamarin.Mac
Version:

Build Information
Release ID: 505040015
Git revision: f93940a35458a18052f1a25e106e62ca970d9c40
Build date: 2014-11-19 15:32:41-05
Xamarin addins: dc23cbd91a3a0e1d326328e1229e86c942a49ec8

Operating System
Mac OS X 10.10.0
Darwin 360Logicas-MacBook-Pro.local 14.0.0 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 2 Rolf Bjarne Kvinge [MSFT] 2015-01-05 05:34:16 UTC
It is by design to only show written output to the Application Output.

You can customize this behavior in your app (to show a dialog if you wish) by adding custom trace listeners to the Debug.Listeners collection.