diff --git a/Behavioral/DesignPatterns.Visitor.UnitTests/DesignPatterns.Visitor.UnitTests.csproj b/Behavioral/DesignPatterns.Visitor.UnitTests/DesignPatterns.Visitor.UnitTests.csproj
new file mode 100644
index 0000000..8144415
--- /dev/null
+++ b/Behavioral/DesignPatterns.Visitor.UnitTests/DesignPatterns.Visitor.UnitTests.csproj
@@ -0,0 +1,36 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <RootNamespace>DesignPatterns.Visitor.UnitTests</RootNamespace>
+        <IsPackable>false</IsPackable>
+        <IsTestProject>true</IsTestProject>
+    </PropertyGroup>
+    
+    <ItemGroup>
+        <PackageReference Include="AutoFixture" Version="4.18.1" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+        <PackageReference Include="Moq" Version="4.20.70" />
+        <PackageReference Include="Shouldly" Version="4.2.1" />
+        <PackageReference Include="xunit" Version="2.6.5" />
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+            <PrivateAssets>all</PrivateAssets>
+        </PackageReference>
+        <PackageReference Include="coverlet.collector" Version="6.0.0">
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+            <PrivateAssets>all</PrivateAssets>
+        </PackageReference>
+        <PackageReference Include="coverlet.msbuild" Version="6.0.0">
+            <PrivateAssets>all</PrivateAssets>
+            <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
+    </ItemGroup>
+    
+    <ItemGroup>
+        <ProjectReference Include="..\DesignPatterns.Visitor\DesignPatterns.Visitor.csproj" />
+    </ItemGroup>
+
+</Project>
\ No newline at end of file
diff --git a/Behavioral/DesignPatterns.Visitor.UnitTests/StringVisitor.cs b/Behavioral/DesignPatterns.Visitor.UnitTests/StringVisitor.cs
new file mode 100644
index 0000000..97b08fa
--- /dev/null
+++ b/Behavioral/DesignPatterns.Visitor.UnitTests/StringVisitor.cs
@@ -0,0 +1,27 @@
+using DesignPatterns.Visitor.Models;
+using Shouldly;
+using Xunit;
+
+namespace DesignPatterns.Visitor.UnitTests;
+
+public class StringVisitorTests
+{
+    [Theory]
+    [InlineData("256KB", 256, typeof(SizeInKiloBytes))]
+    [InlineData("512 KB", 512, typeof(SizeInKiloBytes))]
+    [InlineData("256MB", 256, typeof(SizeInMegaBytes))]
+    [InlineData("512 MB", 512, typeof(SizeInMegaBytes))]
+    [InlineData("256GB", 256, typeof(SizeInGigaBytes))]
+    [InlineData("512 GB", 512, typeof(SizeInGigaBytes))]
+    [InlineData("256TB", 256, typeof(SizeInTeraBytes))]
+    [InlineData("512 TB", 512, typeof(SizeInTeraBytes))]
+    [InlineData("256PB", 256, typeof(SizeInPetaBytes))]
+    [InlineData("512 PB", 512, typeof(SizeInPetaBytes))]
+    public void GivenStringValue_WhenCallVisit_ThenResultAsExpected(string inputValue, long expectedValue, Type expectedType)
+    {
+        var stringVisitor = new StringVisitor();
+        var result = stringVisitor.Visit(inputValue);
+        result.ShouldBeOfType(expectedType);
+        result.Value.ShouldBe(expectedValue);
+    }
+}
diff --git a/Behavioral/DesignPatterns.Visitor/DesignPatterns.Visitor.csproj b/Behavioral/DesignPatterns.Visitor/DesignPatterns.Visitor.csproj
index c34b924..6e6c6e3 100644
--- a/Behavioral/DesignPatterns.Visitor/DesignPatterns.Visitor.csproj
+++ b/Behavioral/DesignPatterns.Visitor/DesignPatterns.Visitor.csproj
@@ -9,8 +9,4 @@
         <RootNamespace>DesignPatterns.Visitor</RootNamespace>
     </PropertyGroup>
 
-    <ItemGroup>
-      <PackageReference Include="AutoFixture" Version="4.18.1" />
-    </ItemGroup>
-
-</Project>
+</Project>
\ No newline at end of file
diff --git a/DesignPatterns.sln b/DesignPatterns.sln
index 2f0933d..980ac49 100644
--- a/DesignPatterns.sln
+++ b/DesignPatterns.sln
@@ -4,6 +4,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DesignPatterns.Visitor", "B
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Behavioral", "Behavioral", "{7FF0E83F-EBEB-4103-BCD1-2F100E82FCD1}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DesignPatterns.Visitor.UnitTests", "Behavioral\DesignPatterns.Visitor.UnitTests\DesignPatterns.Visitor.UnitTests.csproj", "{02AA0F74-2EFE-4804-8938-A92542860F74}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -14,8 +16,13 @@ Global
 		{DCE06EB6-BAB5-4573-AF67-128DBCCDB90C}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{DCE06EB6-BAB5-4573-AF67-128DBCCDB90C}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{DCE06EB6-BAB5-4573-AF67-128DBCCDB90C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{02AA0F74-2EFE-4804-8938-A92542860F74}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{02AA0F74-2EFE-4804-8938-A92542860F74}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{02AA0F74-2EFE-4804-8938-A92542860F74}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{02AA0F74-2EFE-4804-8938-A92542860F74}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{DCE06EB6-BAB5-4573-AF67-128DBCCDB90C} = {7FF0E83F-EBEB-4103-BCD1-2F100E82FCD1}
+		{02AA0F74-2EFE-4804-8938-A92542860F74} = {7FF0E83F-EBEB-4103-BCD1-2F100E82FCD1}
 	EndGlobalSection
 EndGlobal