create test project for main app; move and rename new tests

ErsatzTV.Tests/ErsatzTV.Tests.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net10.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\ErsatzTV\ErsatzTV.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <PackageReference Include="NUnit" Version="4.4.0" />
+      <PackageReference Include="NUnit.Analyzers" Version="4.11.2">
+        <PrivateAssets>all</PrivateAssets>
+        <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      </PackageReference>
+      <PackageReference Include="NUnit3TestAdapter" Version="6.0.1" />
+      <PackageReference Include="Shouldly" Version="4.3.0" />
+    </ItemGroup>
+
+</Project>

ErsatzTV.Tests/Pages/MultiSelectBaseTests.cs

@@ -2,12 +2,11 @@ using ErsatzTV.Application.MediaCards;
 using ErsatzTV.Pages;
 using NUnit.Framework;
 using Shouldly;
-using System.Collections.Generic;
 
-namespace ErsatzTV.Core.Tests.Pages;
+namespace ErsatzTV.Tests.Pages;
 
 [TestFixture]
-public class MediaCardSelectionHelperTests
+public class MultiSelectBaseTests
 {
     [Test]
     public void Should_replace_existing_selection_and_return_last_card()
@@ -18,9 +17,9 @@ public class MediaCardSelectionHelperTests
         var first = new MediaCardViewModel(2, "First", "Sub", "First", "", Core.Domain.MediaItemState.Normal, false);
         var second = new MediaCardViewModel(3, "Second", "Sub", "Second", "", Core.Domain.MediaItemState.Normal, false);
 
-        MultiSelectBase<Search>.ResetSelectionWithCards(selected, new[] { first, second });
+        MultiSelectBase<Search>.ResetSelectionWithCards(selected, [first, second]);
 
-        selected.ShouldBe(new[] { first, second }, ignoreOrder: true);
+        selected.ShouldBe([first, second], ignoreOrder: true);
     }
 
     [Test]

ErsatzTV.sln

@@ -28,6 +28,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ErsatzTV.Infrastructure.Sql
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ErsatzTV.Core.Nullable", "ErsatzTV.Core.Nullable\ErsatzTV.Core.Nullable.csproj", "{557D88A6-C982-4FFD-8FD2-6446CB07D093}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ErsatzTV.Tests", "ErsatzTV.Tests\ErsatzTV.Tests.csproj", "{56F56E76-CEF4-4639-B7BB-03FD201BB019}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -113,11 +115,18 @@ Global
 		{557D88A6-C982-4FFD-8FD2-6446CB07D093}.Release|Any CPU.Build.0 = Release|Any CPU
 		{557D88A6-C982-4FFD-8FD2-6446CB07D093}.Debug No Sync|Any CPU.ActiveCfg = Debug|Any CPU
 		{557D88A6-C982-4FFD-8FD2-6446CB07D093}.Debug No Sync|Any CPU.Build.0 = Debug|Any CPU
+		{56F56E76-CEF4-4639-B7BB-03FD201BB019}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{56F56E76-CEF4-4639-B7BB-03FD201BB019}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{56F56E76-CEF4-4639-B7BB-03FD201BB019}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{56F56E76-CEF4-4639-B7BB-03FD201BB019}.Release|Any CPU.Build.0 = Release|Any CPU
+		{56F56E76-CEF4-4639-B7BB-03FD201BB019}.Debug No Sync|Any CPU.ActiveCfg = Debug|Any CPU
+		{56F56E76-CEF4-4639-B7BB-03FD201BB019}.Debug No Sync|Any CPU.Build.0 = Debug|Any CPU
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{CE7F1ACD-F286-4761-A7BC-A541A1E25C86} = {325E6DA0-52B3-4431-98A2-72C36F403704}
 		{1C892530-CF92-4F43-8C64-BCEEF958D726} = {325E6DA0-52B3-4431-98A2-72C36F403704}
 		{591FB3F4-4DD8-441B-B7C8-F2A42BF69992} = {325E6DA0-52B3-4431-98A2-72C36F403704}
 		{2EF80455-953D-4696-831D-E8CBCA82B0EF} = {325E6DA0-52B3-4431-98A2-72C36F403704}
+		{56F56E76-CEF4-4639-B7BB-03FD201BB019} = {325E6DA0-52B3-4431-98A2-72C36F403704}
 	EndGlobalSection
 EndGlobal

ErsatzTV/Properties/AssemblyInfo.cs

@@ -1,3 +1,3 @@
 using System.Runtime.CompilerServices;
 
-[assembly: InternalsVisibleTo("ErsatzTV.Core.Tests")]
+[assembly: InternalsVisibleTo("ErsatzTV.Tests")]