Added unit test project for UWP with example tests for MockProvider

UnitTests/UnitTests.UWP/Package.appxmanifest

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Package
+  xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
+  xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
+  xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
+  IgnorableNamespaces="uap mp">
+
+  <Identity Name="c089351a-4c91-4cb0-afa7-b976ac715456"
+            Publisher="CN=shweaver"
+            Version="1.0.0.0" />
+
+  <mp:PhoneIdentity PhoneProductId="c089351a-4c91-4cb0-afa7-b976ac715456" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
+
+  <Properties>
+    <DisplayName>UnitTests.UWP</DisplayName>
+    <PublisherDisplayName>WCT</PublisherDisplayName>
+    <Logo>Assets\StoreLogo.png</Logo>
+  </Properties>
+
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.0.0" MaxVersionTested="10.0.0.0" />
+  </Dependencies>
+
+  <Resources>
+    <Resource Language="x-generate" />
+  </Resources>
+  <Applications>
+    <Application Id="vstest.executionengine.universal.App"
+        Executable="$targetnametoken$.exe"
+        EntryPoint="UnitTests.UWP.App">
+      <uap:VisualElements
+        DisplayName="UnitTests.UWP"
+        Square150x150Logo="Assets\Square150x150Logo.png"
+        Square44x44Logo="Assets\Square44x44Logo.png"
+        Description="UnitTests.UWP"
+        BackgroundColor="transparent">
+        <uap:DefaultTile Wide310x150Logo="Assets\Wide310x150Logo.png"/>
+        <uap:SplashScreen Image="Assets\SplashScreen.png" />
+      </uap:VisualElements>
+    </Application>
+  </Applications>
+  <Capabilities>
+    <Capability Name="internetClientServer" />
+    <Capability Name="privateNetworkClientServer" />
+  </Capabilities>
+</Package>

UnitTests/UnitTests.UWP/Properties/AssemblyInfo.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("UnitTests")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("UnitTests")]
+[assembly: AssemblyCopyright("Copyright ©  2021")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+[assembly: AssemblyMetadata("TargetPlatform", "UAP")]
+
+[assembly: ComVisible(false)]

UnitTests/UnitTests.UWP/Properties/Default.rd.xml

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+<!--
+    This file contains Runtime Directives used by .NET Native. The defaults here are suitable for most
+    developers. However, you can modify these parameters to modify the behavior of the .NET Native
+    optimizer.
+
+    Runtime Directives are documented at https://go.microsoft.com/fwlink/?LinkID=391919
+
+    To fully enable reflection for App1.MyClass and all of its public/private members
+    <Type Name="App1.MyClass" Dynamic="Required All"/>
+
+    To enable dynamic creation of the specific instantiation of AppClass<T> over System.Int32
+    <TypeInstantiation Name="App1.AppClass" Arguments="System.Int32" Activate="Required Public" />
+
+    Using the Namespace directive to apply reflection policy to all the types in a particular namespace
+    <Namespace Name="DataClasses.ViewModels" Serialize="All" />
+-->
+
+<Directives xmlns="http://schemas.microsoft.com/netfx/2013/01/metadata">
+  <Application>
+    <!--
+      An Assembly element with Name="*Application*" applies to all assemblies in
+      the application package. The asterisks are not wildcards.
+    -->
+    <Assembly Name="*Application*" Dynamic="Required All" />
+    <!-- Add your application specific runtime directives here. -->
+
+
+  </Application>
+</Directives>

UnitTests/UnitTests.UWP/Providers/Test_MockProvider.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Microsoft.Toolkit.Graph.Providers;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.Net.Http;
+using System.Threading.Tasks;
+
+namespace UnitTests.UWP.Providers
+{
+    [TestClass]
+    public class Test_MockProvider
+    {
+        /// <summary>
+        /// Create a new instance of the MockProvider and check that is has the proper default state.
+        /// </summary>
+        [TestCategory("Providers")]
+        [TestMethod]
+        public void Test_MockProvider_Default()
+        {
+            IProvider provider = new MockProvider();
+
+            Assert.AreEqual(ProviderState.SignedIn, provider.State);
+        }
+
+        /// <summary>
+        /// Create a new instance of the MockProvider and initiates login.
+        /// The test checks that the appropriate events are fired and that the provider transitions 
+        /// through the different states as expected.
+        /// </summary>
+        [TestCategory("Providers")]
+        [TestMethod]
+        public async Task Test_MockProvider_LoginAsync()
+        {
+            // Create the new provider, pre-signed out.
+            IProvider provider = new MockProvider(false);
+
+            // The newly created provider should be in a logged out state.
+            Assert.AreEqual(ProviderState.SignedOut, provider.State);
+
+            // Listen for changes in the provider state and count them.
+            int eventCount = 0;
+            provider.StateChanged += (s, e) =>
+            {
+                eventCount += 1;
+
+                // Ensure that the states are properly reported through the StateChanged event.
+                switch (e.OldState)
+                {
+                    case ProviderState.SignedOut:
+                        // Login has been initiated, the provider should now be loading.
+                        Assert.AreEqual(ProviderState.Loading, e.NewState);
+
+                        // Loading should be the first event fired.
+                        Assert.AreEqual(eventCount, 1);
+                        break;
+
+                    case ProviderState.Loading:
+                        // The provider has completed login, the provider should now be signed in.
+                        Assert.AreEqual(ProviderState.SignedIn, e.NewState);
+
+                        // SignedIn should be the second event fired.
+                        Assert.AreEqual(eventCount, 2);
+                        break;
+
+                    default:
+                        // This is unexpected, something went wrong during the test.
+                        Assert.Fail("The provider has transitioned from an unexpected state: " + Enum.GetName(typeof(ProviderState), e.OldState));
+                        break;
+                }
+            };
+
+            // Initiate logout.
+            await provider.LoginAsync();
+
+            // Logout has completed, the provider should be signed out.
+            Assert.AreEqual(ProviderState.SignedIn, provider.State);
+
+            // Ensure the proper number of events were fired.
+            Assert.AreEqual(eventCount, 2);
+        }
+
+        /// <summary>
+        /// Create a new instance of the MockProvider and initiates logout.
+        /// The test checks that the appropriate events are fired and that the provider transitions 
+        /// through the different states as expected.
+        /// </summary>
+        [TestCategory("Providers")]
+        [TestMethod]
+        public async Task Test_MockProvider_LogoutAsync()
+        {
+            // Create the new provider, pre-signed in.
+            IProvider provider = new MockProvider(true);
+
+            // The newly created provider should be in a logged in state.
+            Assert.AreEqual(ProviderState.SignedIn, provider.State);
+
+            // Listen for changes in the provider state and count them.
+            int eventCount = 0;
+            provider.StateChanged += (s, e) =>
+            {
+                eventCount += 1;
+
+                // Ensure that the states are properly reported through the StateChanged event.
+                switch (e.OldState)
+                {
+                    case ProviderState.SignedIn:
+                        // Logout has been initiated, the provider should now be loading.
+                        Assert.AreEqual(ProviderState.Loading, e.NewState);
+
+                        // Loading should be the first event fired.
+                        Assert.AreEqual(eventCount, 1);
+                        break;
+
+                    case ProviderState.Loading:
+                        // The provider has completed logout, the provider should now be signed out.
+                        Assert.AreEqual(ProviderState.SignedOut, e.NewState);
+
+                        // SignedOut should be the second event fired.
+                        Assert.AreEqual(eventCount, 2);
+                        break;
+
+                    default:
+                        // This is unexpected, something went wrong during the test.
+                        Assert.Fail("The provider has transitioned from an unexpected state: " + Enum.GetName(typeof(ProviderState), e.OldState));
+                        break;
+                }
+            };
+
+            // Initiate logout.
+            await provider.LogoutAsync();
+
+            // Logout has completed, the provider should be signed out.
+            Assert.AreEqual(ProviderState.SignedOut, provider.State);
+
+            // Ensure the proper number of events were fired.
+            Assert.AreEqual(eventCount, 2);
+        }
+
+        /// <summary>
+        /// Authenticate an empty request and detect that the approapriate headers have been added.
+        /// </summary>
+        [TestCategory("Providers")]
+        [TestMethod]
+        public async Task Test_MockProvider_AuthenticateRequestAsync()
+        {
+            // Create a new instance of the MockProvider.
+            IProvider provider = new MockProvider(true);
+
+            // Create an empty message to authenticate.
+            var message = new HttpRequestMessage();
+
+            // Use the provider to authenticate the message.
+            await provider.AuthenticateRequestAsync(message);
+
+            // Check for the absence of the SdkVersion header value on the empty message.
+            bool sdkVersionHeaderExists = message.Headers.TryGetValues("SdkVersion", out _);
+            Assert.IsFalse(sdkVersionHeaderExists, "SdkVersion header values should not exist on an empty request that does not originate from the SDK.");
+
+            // Check for the authorization header
+            Assert.IsNotNull(message.Headers.Authorization, "Authorization header was not found.");
+            Assert.AreEqual("Bearer", message.Headers.Authorization.Scheme);
+            Assert.AreEqual("{token:https://graph.microsoft.com/}", message.Headers.Authorization.Parameter);
+        }
+    }
+}

UnitTests/UnitTests.UWP/SmokeTest.cs

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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace UnitTests.UWP
+{
+    /// <summary>
+    /// A super basic dummy test to make sure the test harness is prepared properly and ready for more tests.
+    /// </summary>
+    [TestClass]
+    public class SmokeTest
+    {
+        [TestCategory("SmokeTest")]
+        [TestMethod]
+        public void TrueIsTrue()
+        {
+            Assert.IsTrue(true);
+        }
+    }
+}

UnitTests/UnitTests.UWP/UnitTestApp.xaml

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+<Application
+    x:Class="UnitTests.UWP.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:UnitTests.UWP">
+
+</Application>

UnitTests/UnitTests.UWP/UnitTestApp.xaml.cs

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+using System;
+using Windows.ApplicationModel;
+using Windows.ApplicationModel.Activation;
+using Windows.ApplicationModel.Core;
+using Windows.System;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Navigation;
+
+namespace UnitTests.UWP
+{
+    /// <summary>
+    /// Provides application-specific behavior to supplement the default Application class.
+    /// </summary>
+    public partial class App : Application
+    {
+        // Holder for test content to abstract Window.Current.Content
+        public static FrameworkElement ContentRoot
+        {
+            get
+            {
+                var rootFrame = Window.Current.Content as Frame;
+                return rootFrame.Content as FrameworkElement;
+            }
+
+            set
+            {
+                var rootFrame = Window.Current.Content as Frame;
+                rootFrame.Content = value;
+            }
+        }
+
+        // Abstract CoreApplication.MainView.DispatcherQueue
+        public static DispatcherQueue DispatcherQueue
+        {
+            get
+            {
+                return CoreApplication.MainView.DispatcherQueue;
+            }
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="App"/> class.
+        /// Initializes the singleton application object.  This is the first line of authored code
+        /// executed, and as such is the logical equivalent of main() or WinMain().
+        /// </summary>
+        public App()
+        {
+            InitializeComponent();
+            Suspending += OnSuspending;
+        }
+
+        /// <summary>
+        /// Invoked when the application is launched normally by the end user.  Other entry points
+        /// will be used such as when the application is launched to open a specific file.
+        /// </summary>
+        /// <param name="e">Details about the launch request and process.</param>
+        protected override void OnLaunched(LaunchActivatedEventArgs e)
+        {
+#if DEBUG
+            if (System.Diagnostics.Debugger.IsAttached)
+            {
+                DebugSettings.EnableFrameRateCounter = true;
+            }
+
+#endif
+
+            Frame rootFrame = Window.Current.Content as Frame;
+
+            // Do not repeat app initialization when the Window already has content,
+            // just ensure that the window is active
+            if (rootFrame == null)
+            {
+                // Create a Frame to act as the navigation context and navigate to the first page
+                rootFrame = new Frame()
+                {
+                    CacheSize = 0 // Prevent any test pages from being cached
+                };
+
+                rootFrame.NavigationFailed += OnNavigationFailed;
+
+                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
+                {
+                    // TODO: Load state from previously suspended application
+                }
+
+                // Place the frame in the current Window
+                Window.Current.Content = rootFrame;
+            }
+
+            Microsoft.VisualStudio.TestPlatform.TestExecutor.UnitTestClient.CreateDefaultUI();
+
+            // Ensure the current window is active
+            Window.Current.Activate();
+
+            Microsoft.VisualStudio.TestPlatform.TestExecutor.UnitTestClient.Run(e.Arguments);
+        }
+
+        /// <summary>
+        /// Invoked when Navigation to a certain page fails
+        /// </summary>
+        /// <param name="sender">The Frame which failed navigation</param>
+        /// <param name="e">Details about the navigation failure</param>
+        private void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
+        {
+            throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
+        }
+
+        /// <summary>
+        /// Invoked when application execution is being suspended.  Application state is saved
+        /// without knowing whether the application will be terminated or resumed with the contents
+        /// of memory still intact.
+        /// </summary>
+        /// <param name="sender">The source of the suspend request.</param>
+        /// <param name="e">Details about the suspend request.</param>
+        private void OnSuspending(object sender, SuspendingEventArgs e)
+        {
+            var deferral = e.SuspendingOperation.GetDeferral();
+
+            // TODO: Save application state and stop any background activity
+            deferral.Complete();
+        }
+    }
+}

UnitTests/UnitTests.UWP/UnitTests.UWP.csproj

@@ -0,0 +1,205 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProjectGuid>{6B33B26C-008B-4ADB-B317-EF996CD6755B}</ProjectGuid>
+    <OutputType>AppContainerExe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>UnitTests.UWP</RootNamespace>
+    <AssemblyName>UnitTests.UWP</AssemblyName>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <TargetPlatformIdentifier>UAP</TargetPlatformIdentifier>
+    <TargetPlatformVersion>10.0.19041.0</TargetPlatformVersion>
+    <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
+    <MinimumVisualStudioVersion>14</MinimumVisualStudioVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <UnitTestPlatformVersion Condition="'$(UnitTestPlatformVersion)' == ''">$(VisualStudioVersion)</UnitTestPlatformVersion>
+    <AppxPackageSigningEnabled>false</AppxPackageSigningEnabled>
+    <LangVersion>9.0</LangVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x86\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
+    <OutputPath>bin\x86\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\ARM\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>ARM</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM'">
+    <OutputPath>bin\ARM\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>ARM</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\ARM64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>ARM64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM64'">
+    <OutputPath>bin\ARM64\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>ARM64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup>
+    <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
+  </PropertyGroup>
+  <ItemGroup>
+    <SDKReference Include="TestPlatform.Universal, Version=$(UnitTestPlatformVersion)" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Providers\Test_MockProvider.cs" />
+    <Compile Include="UnitTestApp.xaml.cs">
+      <DependentUpon>UnitTestApp.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="SmokeTest.cs" />
+    <Compile Include="VisualUITestBase.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="UnitTestApp.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+  </ItemGroup>
+  <ItemGroup>
+    <AppxManifest Include="Package.appxmanifest">
+      <SubType>Designer</SubType>
+    </AppxManifest>
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="Properties\Default.rd.xml" />
+    <Content Include="Assets\LockScreenLogo.scale-200.png" />
+    <Content Include="Assets\SplashScreen.scale-200.png" />
+    <Content Include="Assets\Square150x150Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
+    <Content Include="Assets\StoreLogo.png" />
+    <Content Include="Assets\Wide310x150Logo.scale-200.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection">
+      <Version>3.1.5</Version>
+    </PackageReference>
+    <PackageReference Include="FluentAssertions">
+      <Version>5.10.3</Version>
+    </PackageReference>
+    <PackageReference Include="Microsoft.Graph.Core">
+      <Version>1.24.0</Version>
+    </PackageReference>
+    <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
+      <Version>6.2.12</Version>
+    </PackageReference>
+    <PackageReference Include="Microsoft.Toolkit.Uwp">
+      <Version>7.0.0</Version>
+    </PackageReference>
+    <PackageReference Include="Microsoft.Toolkit.Uwp.UI">
+      <Version>7.0.0</Version>
+    </PackageReference>
+    <PackageReference Include="MSTest.TestAdapter">
+      <Version>2.1.2</Version>
+    </PackageReference>
+    <PackageReference Include="MSTest.TestFramework">
+      <Version>2.1.2</Version>
+    </PackageReference>
+    <PackageReference Include="Newtonsoft.Json">
+      <Version>10.0.3</Version>
+      <!-- DO NOT UPGRADE THIS PACKAGE FROM 10.0.3, this is used for upgrade testing between 6.1.1 and 7.0.0 for the Object Serializers -->
+    </PackageReference>
+    <PackageReference Include="System.Text.Json">
+      <Version>4.7.2</Version>
+    </PackageReference>
+    <PackageReference Include="System.Xml.XPath.XmlDocument">
+      <Version>4.3.0</Version>
+    </PackageReference>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\Microsoft.Toolkit.Graph\Microsoft.Toolkit.Graph.csproj">
+      <Project>{B2246169-0CD8-473C-AFF6-172310E2C3F6}</Project>
+      <Name>Microsoft.Toolkit.Graph</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">
+    <VisualStudioVersion>14.0</VisualStudioVersion>
+  </PropertyGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Microsoft\WindowsXaml\v$(VisualStudioVersion)\Microsoft.Windows.UI.Xaml.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

UnitTests/UnitTests.UWP/VisualUITestBase.cs

@@ -0,0 +1,84 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Microsoft.Toolkit.Uwp;
+using Microsoft.Toolkit.Uwp.UI.Helpers;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.Threading.Tasks;
+using Windows.UI.Xaml;
+
+namespace UnitTests.UWP
+{
+    /// <summary>
+    /// Base class to be used in API tests which require UI layout or rendering to occur first.
+    /// For more E2E scenarios or testing components for user interation, see integration test suite instead.
+    /// Use this class when an API needs direct access to test functions of the UI itself in more simplistic scenarios (i.e. visual tree helpers).
+    /// </summary>
+    public class VisualUITestBase
+    {
+        /// <summary>
+        /// Sets the content of the test app to a simple <see cref="FrameworkElement"/> to load into the visual tree.
+        /// Waits for that element to be loaded and rendered before returning.
+        /// </summary>
+        /// <param name="content">Content to set in test app.</param>
+        /// <returns>When UI is loaded.</returns>
+        protected Task SetTestContentAsync(FrameworkElement content)
+        {
+            return App.DispatcherQueue.EnqueueAsync(() =>
+            {
+                var taskCompletionSource = new TaskCompletionSource<bool>();
+
+                async void Callback(object sender, RoutedEventArgs args)
+                {
+                    content.Loaded -= Callback;
+
+                    // Wait for first Render pass
+                    await CompositionTargetHelper.ExecuteAfterCompositionRenderingAsync(() => { });
+
+                    taskCompletionSource.SetResult(true);
+                }
+
+                // Going to wait for our original content to unload
+                content.Loaded += Callback;
+
+                // Trigger that now
+                try
+                {
+                    App.ContentRoot = content;
+                }
+                catch (Exception e)
+                {
+                    taskCompletionSource.SetException(e);
+                }
+
+                return taskCompletionSource.Task;
+            });
+        }
+
+        [TestCleanup]
+        public async Task Cleanup()
+        {
+            var taskCompletionSource = new TaskCompletionSource<bool>();
+
+            await App.DispatcherQueue.EnqueueAsync(() =>
+            {
+                // If we didn't set our content we don't have to do anything but complete here.
+                if (App.ContentRoot is null)
+                {
+                    taskCompletionSource.SetResult(true);
+                    return;
+                }
+
+                // Going to wait for our original content to unload
+                App.ContentRoot.Unloaded += (_, _) => taskCompletionSource.SetResult(true);
+
+                // Trigger that now
+                App.ContentRoot = null;
+            });
+
+            await taskCompletionSource.Task;
+        }
+    }
+}

Windows-Toolkit-Graph-Controls.sln

@@ -38,6 +38,10 @@ Project("{C7167F0D-BC9F-4E6E-AFE1-012C56B48DB5}") = "WPF-Packaged-App", "Samples
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.Toolkit.Wpf.Graph.Providers", "Microsoft.Toolkit.Wpf.Graph.Providers\Microsoft.Toolkit.Wpf.Graph.Providers.csproj", "{8B9BFE42-F526-4961-A1FD-2D2B6AA0C305}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "UnitTests", "UnitTests", "{13F3F93C-1FB7-48D5-BB73-F5287A72217E}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UnitTests.UWP", "UnitTests\UnitTests.UWP\UnitTests.UWP.csproj", "{6B33B26C-008B-4ADB-B317-EF996CD6755B}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		CI|Any CPU = CI|Any CPU
@@ -351,6 +355,62 @@ Global
 		{8B9BFE42-F526-4961-A1FD-2D2B6AA0C305}.Release|x64.Build.0 = Release|Any CPU
 		{8B9BFE42-F526-4961-A1FD-2D2B6AA0C305}.Release|x86.ActiveCfg = Release|Any CPU
 		{8B9BFE42-F526-4961-A1FD-2D2B6AA0C305}.Release|x86.Build.0 = Release|Any CPU
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|Any CPU.ActiveCfg = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|Any CPU.Build.0 = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|Any CPU.Deploy.0 = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|ARM.ActiveCfg = Debug|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|ARM.Build.0 = Debug|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|ARM.Deploy.0 = Debug|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|ARM64.ActiveCfg = Debug|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|ARM64.Build.0 = Debug|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|ARM64.Deploy.0 = Debug|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|x64.ActiveCfg = Debug|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|x64.Build.0 = Debug|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|x64.Deploy.0 = Debug|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|x86.ActiveCfg = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|x86.Build.0 = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.CI|x86.Deploy.0 = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|Any CPU.ActiveCfg = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|ARM.ActiveCfg = Debug|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|ARM.Build.0 = Debug|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|ARM.Deploy.0 = Debug|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|ARM64.Build.0 = Debug|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|ARM64.Deploy.0 = Debug|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|x64.ActiveCfg = Debug|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|x64.Build.0 = Debug|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|x64.Deploy.0 = Debug|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|x86.ActiveCfg = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|x86.Build.0 = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Debug|x86.Deploy.0 = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|Any CPU.ActiveCfg = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|Any CPU.Build.0 = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|Any CPU.Deploy.0 = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|ARM.ActiveCfg = Debug|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|ARM.Build.0 = Debug|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|ARM.Deploy.0 = Debug|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|ARM64.ActiveCfg = Debug|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|ARM64.Build.0 = Debug|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|ARM64.Deploy.0 = Debug|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|x64.ActiveCfg = Debug|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|x64.Build.0 = Debug|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|x64.Deploy.0 = Debug|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|x86.ActiveCfg = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|x86.Build.0 = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Native|x86.Deploy.0 = Debug|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|Any CPU.ActiveCfg = Release|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|ARM.ActiveCfg = Release|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|ARM.Build.0 = Release|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|ARM.Deploy.0 = Release|ARM
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|ARM64.ActiveCfg = Release|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|ARM64.Build.0 = Release|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|ARM64.Deploy.0 = Release|ARM64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|x64.ActiveCfg = Release|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|x64.Build.0 = Release|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|x64.Deploy.0 = Release|x64
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|x86.ActiveCfg = Release|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|x86.Build.0 = Release|x86
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B}.Release|x86.Deploy.0 = Release|x86
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -360,6 +420,7 @@ Global
 		{053BC0AF-FF48-45EC-B201-D80546A46587} = {DC168678-D7E0-4383-B05B-9953CEBE0257}
 		{B766A515-51F8-478E-B1B2-93794864C66A} = {DC168678-D7E0-4383-B05B-9953CEBE0257}
 		{FE713229-AEE5-489A-9251-C346A82C1AC3} = {DC168678-D7E0-4383-B05B-9953CEBE0257}
+		{6B33B26C-008B-4ADB-B317-EF996CD6755B} = {13F3F93C-1FB7-48D5-BB73-F5287A72217E}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {20641689-5BDE-4F6F-8889-CCDD2CC2685E}