fix: Nullability fix (#162)

* fix: Nullability fixes

* build(deps): update Splat requirement from 10.* to 11.* in /src

Updates the requirements on [Splat](https://github.com/reactiveui/splat) to permit the latest version.
- [Release notes](https://github.com/reactiveui/splat/releases)
- [Changelog](https://github.com/reactiveui/splat/blob/main/RELEASENOTES.md)
- [Commits](reactiveui/splat@10.0.1...11.0.1)

Signed-off-by: dependabot[bot] <support@github.com>

* Add a smoke test

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/Fusillade.Tests/NetCacheTests.cs

@@ -0,0 +1,30 @@
+// Copyright (c) 2021 .NET Foundation and Contributors. All rights reserved.
+// 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 full license information.
+
+using Xunit;
+
+namespace Fusillade.Tests
+{
+    /// <summary>
+    /// Checks to make sure that the NetCache operates correctly.
+    /// </summary>
+    [CollectionDefinition(nameof(NetCacheTests), DisableParallelization = true)]
+    public class NetCacheTests
+    {
+        /// <summary>
+        /// Verifies that we are registering the default handlers correctly.
+        /// </summary>
+        [Fact]
+        public void DefaultValuesShouldBeRegistered()
+        {
+            Assert.NotNull(NetCache.Speculative);
+            Assert.NotNull(NetCache.UserInitiated);
+            Assert.NotNull(NetCache.Background);
+            Assert.NotNull(NetCache.Offline);
+            Assert.NotNull(NetCache.OperationQueue);
+            Assert.Null(NetCache.RequestCache);
+        }
+    }
+}

src/Fusillade/Fusillade.csproj

@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <PackageReference Include="punchclock" Version="3.*" />
-    <PackageReference Include="Splat" Version="10.*" />
+    <PackageReference Include="Splat" Version="11.*" />
     <PackageReference Include="System.Net.Http" Version="4.3.4" />
     <PackageReference Include="System.Reactive" Version="5.*" />
   </ItemGroup>

src/Fusillade/NetCache.cs

@@ -60,7 +60,7 @@ static NetCache()
         /// </summary>
         public static LimitingHttpMessageHandler Speculative
         {
-            get => unitTestSpeculative ?? speculative ?? Locator.Current.GetService<LimitingHttpMessageHandler>("Speculative");
+            get => unitTestSpeculative ?? Locator.Current.GetService<LimitingHttpMessageHandler>("Speculative") ?? speculative;
             set
             {
                 if (ModeDetector.InUnitTestRunner())
@@ -81,7 +81,7 @@ public static LimitingHttpMessageHandler Speculative
         /// </summary>
         public static HttpMessageHandler UserInitiated
         {
-            get => unitTestUserInitiated ?? userInitiated ?? Locator.Current.GetService<HttpMessageHandler>("UserInitiated");
+            get => unitTestUserInitiated ?? Locator.Current.GetService<HttpMessageHandler>("UserInitiated") ?? userInitiated;
             set
             {
                 if (ModeDetector.InUnitTestRunner())
@@ -102,7 +102,7 @@ public static HttpMessageHandler UserInitiated
         /// </summary>
         public static HttpMessageHandler Background
         {
-            get => unitTestBackground ?? background ?? Locator.Current.GetService<HttpMessageHandler>("Background");
+            get => unitTestBackground ?? Locator.Current.GetService<HttpMessageHandler>("Background") ?? background;
             set
             {
                 if (ModeDetector.InUnitTestRunner())
@@ -123,7 +123,7 @@ public static HttpMessageHandler Background
         /// </summary>
         public static HttpMessageHandler Offline
         {
-            get => unitTestOffline ?? offline ?? Locator.Current.GetService<HttpMessageHandler>("Offline");
+            get => unitTestOffline ?? Locator.Current.GetService<HttpMessageHandler>("Offline") ?? offline;
             set
             {
                 if (ModeDetector.InUnitTestRunner())
@@ -145,7 +145,7 @@ public static HttpMessageHandler Offline
         /// </summary>
         public static OperationQueue OperationQueue
         {
-            get => unitTestOperationQueue ?? operationQueue ?? Locator.Current.GetService<OperationQueue>("OperationQueue");
+            get => unitTestOperationQueue ?? Locator.Current.GetService<OperationQueue>("OperationQueue") ?? operationQueue;
             set
             {
                 if (ModeDetector.InUnitTestRunner())