Update Newtonsoft.Json package to version 13.0.1

Add unit tests for message text validation

Author: aj-enns

src/Application/tests/RazorPagesTestSample.Tests/RazorPagesTestSample.Tests.csproj

@@ -1,19 +1,15 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
-
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
-
   <!-- https://github.com/NuGet/Home/issues/4412 -->
-
-
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="8.0.3" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.3" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="8.0.3" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="Moq" Version="4.20.70" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="System.Diagnostics.TraceSource" Version="4.3.0" />
     <PackageReference Include="System.Net.Http" Version="4.3.4" />
     <PackageReference Include="xunit" Version="2.7.0" />
@@ -22,12 +18,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
   </ItemGroup>
-
-
   <ItemGroup>
-    <Reference Include="RazorPagesTestSample">
-      <HintPath>..\..\src\RazorPagesTestSample\bin\Debug\net8.0\RazorPagesTestSample.dll</HintPath>
-    </Reference>
+    <ProjectReference Include="..\..\src\RazorPagesTestSample\RazorPagesTestSample.csproj" />
   </ItemGroup>
-
-</Project>
+</Project>

src/Application/tests/RazorPagesTestSample.Tests/UnitTests/MessageTests.cs

@@ -0,0 +1,46 @@
+using System.ComponentModel.DataAnnotations;
+using RazorPagesTestSample.Data;
+using Xunit;
+
+namespace RazorPagesTestSample.Tests.UnitTests
+{
+    public class MessageTests
+    {
+        [Fact]
+        public void MessageText_ShouldNotExceed250Characters()
+        {
+            // Arrange
+            var message = new Message
+            {
+                Text = new string('a', 251) // 251 characters
+            };
+            var validationContext = new ValidationContext(message);
+            var validationResults = new List<ValidationResult>();
+
+            // Act
+            var isValid = Validator.TryValidateObject(message, validationContext, validationResults, true);
+
+            // Assert
+            Assert.False(isValid);
+            Assert.Contains(validationResults, v => v.ErrorMessage.Contains("250 character limit"));
+        }
+
+        [Fact]
+        public void MessageText_ShouldBeValid_WhenWithin250Characters()
+        {
+            // Arrange
+            var message = new Message
+            {
+                Text = new string('a', 250) // 250 characters
+            };
+            var validationContext = new ValidationContext(message);
+            var validationResults = new List<ValidationResult>();
+
+            // Act
+            var isValid = Validator.TryValidateObject(message, validationContext, validationResults, true);
+
+            // Assert
+            Assert.True(isValid);
+        }
+    }
+}