Before changing Piece[,] to Dictionary<string,Piece>

Gameboard.ShogiUI.xUnitTests/GameShould.cs

@@ -0,0 +1,17 @@
+using FluentAssertions;
+using Gameboard.ShogiUI.Sockets.ServiceModels.Socket.Types;
+using Xunit;
+
+namespace Gameboard.ShogiUI.xUnitTests
+{
+  public class GameShould
+  {
+    [Fact]
+    public void DiscardNullPLayers()
+    {
+      var game = new Game("Test", "P1", null);
+
+      game.Players.Count.Should().Be(1);
+    }
+  }
+}

Gameboard.ShogiUI.xUnitTests/Gameboard.ShogiUI.xUnitTests.csproj

@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="AutoFixture" Version="4.17.0" />
+    <PackageReference Include="FluentAssertions" Version="5.10.3" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="coverlet.collector" Version="3.0.2">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Gameboard.ShogiUI.Sockets\Gameboard.ShogiUI.Sockets.csproj" />
+  </ItemGroup>
+
+</Project>

Gameboard.ShogiUI.xUnitTests/RequestValidators/MoveRequestValidatorShould.cs

@@ -0,0 +1,76 @@
+using AutoFixture;
+using FluentAssertions;
+using FluentAssertions.Execution;
+using Gameboard.ShogiUI.Sockets.ServiceModels.Socket.Messages;
+using Gameboard.ShogiUI.Sockets.ServiceModels.Socket.Types;
+using Gameboard.ShogiUI.Sockets.Services.RequestValidators;
+using Xunit;
+
+namespace Gameboard.ShogiUI.xUnitTests.RequestValidators
+{
+  public class MoveRequestValidatorShould
+  {
+    private readonly Fixture fixture;
+    private readonly MoveRequestValidator validator;
+    public MoveRequestValidatorShould()
+    {
+      fixture = new Fixture();
+      validator = new MoveRequestValidator();
+    }
+
+    [Fact]
+    public void PreventInvalidPropertyCombinations()
+    {
+      // Arrange
+      var request = fixture.Create<MoveRequest>();
+
+      // Act
+      var results = validator.Validate(request);
+
+      // Assert
+      using (new AssertionScope())
+      {
+        results.IsValid.Should().BeFalse();
+      }
+    }
+
+    [Fact]
+    public void AllowValidPropertyCombinations()
+    {
+      // Arrange
+      var requestWithoutFrom = new MoveRequest()
+      {
+        Action = ClientAction.Move,
+        GameName = "Some game name",
+        Move = new Move()
+        {
+          IsPromotion = false,
+          PieceFromCaptured = WhichPiece.Bishop,
+          To = "A4"
+        }
+      };
+      var requestWithoutPieceFromCaptured = new MoveRequest()
+      {
+        Action = ClientAction.Move,
+        GameName = "Some game name",
+        Move = new Move()
+        {
+          From = "A1",
+          IsPromotion = false,
+          To = "A4"
+        }
+      };
+
+      // Act
+      var results = validator.Validate(requestWithoutFrom);
+      var results2 = validator.Validate(requestWithoutPieceFromCaptured);
+
+      // Assert
+      using (new AssertionScope())
+      {
+        results.IsValid.Should().BeTrue();
+        results2.IsValid.Should().BeTrue();
+      }
+    }
+  }
+}