🚧 Input Injection Test API Tests...

[michael-hawker]

Was initiative started with the initial Sizer controls when in Labs. Prior PR in Labs: CommunityToolkit/Labs-Windows#183

Also needs Tooling Branch: https://github.com/CommunityToolkit/Tooling-Windows-Submodule/tree/llama/input-injection-2025

TODO: More fluent API surface and figuring out how to do a Drag operation instead of just Click... 😅

API: https://learn.microsoft.com/en-us/uwp/api/windows.ui.input.preview.injection.inputinjector.initializetouchinjection

Other docs: https://learn.microsoft.com/en-us/windows/apps/design/input/input-injection

Still, as far as I see all the examples are simple clicks down/up and don't explain drag. 🥲 Doc issue: MicrosoftDocs/windows-dev-docs#3887

Toolkit Tracking issue: CommunityToolkit/Labs-Windows#176

[michael-hawker]

First force-push was for XAML Styling, think I had turned it off elsewhere locally, need to turn it back on.
2nd was for forgetting to remove unneeded namespaces from new XAML file, as we have global usings, so UWP failed as it had the WinUI ones.

[michael-hawker]

Huh, I saw the WinUI 3 input tests pass yesterday, today it's failing:

Failed InputInjection_TestClickButton_SizerInputTestClass_Test [8 s]
Error Message:
Assert.IsTrue failed. Button wasn't clicked.
Stack Trace:
at SizersTests.SizerInputTestClass.InputInjection_TestClickButton(TouchInjectionTest testControl) in D:\a\Windows\Windows\components\Sizers\tests\SizerInputTestClass.cs:line 56
at SizersTests.SizerInputTestClass.<InputInjection_TestClickButton_SizerInputTestClass_Test>b__3_0() in //ProjectHeads/AllComponents/Tests.Wasdk/obj/x64/Release/net9.0-windows10.0.19041.0/win-x64/CommunityToolkit.Tooling.TestGen/CommunityToolkit.Tooling.TestGen.UIThreadTestMethodGenerator/InputInjection_TestClickButton_SizerInputTestClass.g.cs:line 20
at CommunityToolkit.WinUI.DispatcherQueueExtensions.<>c__DisplayClass3_0.<b__1>d.MoveNext() in //components/Extensions/src/Dispatcher/DispatcherQueueExtensions.cs:line 180
--- End of stack trace from previous location ---
at Microsoft.VisualStudio.TestPlatform.MSTestAdapter.PlatformServices.ThreadOperations.ExecuteWithAbortSafety(Action action)

Very odd, not sure what might be up there. 🤔