chore: reorganize project and add test project

YKanBan.Tests/ProjectReferenceTests.cs

@@ -0,0 +1,21 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace YKanBan.Tests;
+
+/// <summary>
+/// Smoke tests verifying that the test project is correctly wired to the
+/// application project and that the test runner can discover and execute tests.
+/// </summary>
+[TestClass]
+public class ProjectReferenceTests
+{
+    /// <summary>
+    /// Verifies that a type defined in the application assembly can be
+    /// referenced from the test project.
+    /// </summary>
+    [TestMethod]
+    public void ApplicationAssemblyIsReferenceable()
+    {
+        Assert.IsNotNull(typeof(App));
+    }
+}

YKanBan.Tests/YKanBan.Tests.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MSTest" Version="4.4.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\YKanBan\YKanBan.csproj" />
+  </ItemGroup>
+
+</Project>