`Given_ApplicationDataContainer_When_GetAllKeys` fails on iOS

[MartinZikmund]

Current behavior

Given_ApplicationDataContainer_When_GetAllKeys fails on iOS when run on my device. The problem seems to be the fact, that even after clearing, the NSUserDefaults.StandardUserDefaults contains a ton of weird default settings like:

AppleLanguages, AppleLocale, NSInterfaceStyle, AppleITunesStoreItemKinds, AppleKeyboardsExpanded, PKKeychainVersionKey, ApplePasscodeKeyboards , AppleKeyboards, NSLanguages, NSInterfaceStyle

One of those being a date, which contains :, which Uno, unfortunately, uses as deserialization separator. This makes the DataTypeSerializer crash with exception.

Expected behavior

Runtime tests should run from SamplesApp without issues.

How to reproduce it (as minimally and precisely as possible)

Run Runtime tests via the SamplesApp on iOS.

Environment

Nuget Package:

Package Version(s):

Affected platform(s):

• [x] iOS
• [ ] Android
• [ ] WebAssembly
• [ ] Windows
• [ ] Build tasks

Visual Studio

• [ ] 2017 (version: )
• [x] 2019 (version: 16.2 Preview 3)
• [ ] for Mac (version: )

Relevant plugins

• [ ] Resharper (version: )

Anything else we need to know?

[xperiandri]

Critical bug. Having it you kan only save a fixed set of values keys for which you hardcode in code

[MartinZikmund]

The cause is that these come from the global domain:

https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/UserDefaults/AboutPreferenceDomains/AboutPreferenceDomains.html

We should be able to filter them out, will do that as part of App data changes PR