diff --git a/JpnCardsPokemon.Tests/JpnCardsPokemon.Tests.csproj b/JpnCardsPokemon.Tests/JpnCardsPokemon.Tests.csproj
new file mode 100644
index 0000000..c8cc251
--- /dev/null
+++ b/JpnCardsPokemon.Tests/JpnCardsPokemon.Tests.csproj
@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
+    <PackageReference Include="NUnit" Version="3.13.3" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
+    <PackageReference Include="NUnit.Analyzers" Version="3.3.0" />
+    <PackageReference Include="coverlet.collector" Version="3.1.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\src\JpnCardsPokemonSdk.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/JpnCardsPokemon.Tests/UnitTest1.cs b/JpnCardsPokemon.Tests/UnitTest1.cs
new file mode 100644
index 0000000..3b824a2
--- /dev/null
+++ b/JpnCardsPokemon.Tests/UnitTest1.cs
@@ -0,0 +1,23 @@
+using JpnCardsPokemonSdk.Api;
+using JpnCardsPokemonSdk.Client;
+
+namespace JpnCardsPokemon.Tests
+{
+    public class Tests
+    {
+        private ApiClient Client = new ApiClient();
+
+        [SetUp]
+        public void Setup()
+        {
+        }
+
+        [Test]
+        public async Task TestFetchSets()
+        {
+            var sets = await Client.FetchDataAsync<Set>();
+            Assert.IsNotEmpty(sets?.Data);
+            // Assert.Pass();
+        }
+    }
+}
\ No newline at end of file
diff --git a/JpnCardsPokemon.Tests/Usings.cs b/JpnCardsPokemon.Tests/Usings.cs
new file mode 100644
index 0000000..cefced4
--- /dev/null
+++ b/JpnCardsPokemon.Tests/Usings.cs
@@ -0,0 +1 @@
+global using NUnit.Framework;
\ No newline at end of file
diff --git a/JpnCardsPokemonSdk.sln b/JpnCardsPokemonSdk.sln
index 1f2208c..e767054 100644
--- a/JpnCardsPokemonSdk.sln
+++ b/JpnCardsPokemonSdk.sln
@@ -5,6 +5,8 @@ VisualStudioVersion = 17.5.33318.248
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JpnCardsPokemonSdk", "src\JpnCardsPokemonSdk.csproj", "{D5C0B825-C6F2-48BB-B4C8-E416B545151E}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "JpnCardsPokemon.Tests", "JpnCardsPokemon.Tests\JpnCardsPokemon.Tests.csproj", "{13AA15F0-0CCD-4B59-A235-5DFB5C0B6C74}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +17,10 @@ Global
 		{D5C0B825-C6F2-48BB-B4C8-E416B545151E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{D5C0B825-C6F2-48BB-B4C8-E416B545151E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{D5C0B825-C6F2-48BB-B4C8-E416B545151E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{13AA15F0-0CCD-4B59-A235-5DFB5C0B6C74}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{13AA15F0-0CCD-4B59-A235-5DFB5C0B6C74}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{13AA15F0-0CCD-4B59-A235-5DFB5C0B6C74}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{13AA15F0-0CCD-4B59-A235-5DFB5C0B6C74}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/src/Api/Set.cs b/src/Api/Set.cs
index 9358072..5cd5c11 100644
--- a/src/Api/Set.cs
+++ b/src/Api/Set.cs
@@ -5,6 +5,11 @@ namespace JpnCardsPokemonSdk.Api;
 
 public class Set : EndpointObject
 {
+    static Set()
+    {
+        EndpointFactory.RegisterTypeEndpoint<Set>(new SetEndpoint());
+    }
+
     public string? Name { get; set; }
 
     public int Id { get; set; }
diff --git a/src/Client/Responses/EnumerableApiResponse.cs b/src/Client/Responses/EnumerableApiResponse.cs
index 2cbe2ec..4e6b926 100644
--- a/src/Client/Responses/EnumerableApiResponse.cs
+++ b/src/Client/Responses/EnumerableApiResponse.cs
@@ -15,7 +15,7 @@ public class EnumerableApiResponse<T> : IApiResponse<IEnumerable<T>>,
         (IPageableApiResponse<EnumerableApiResponse<T>, IEnumerable<T>>)this).TotalCount / (
         (IPageableApiResponse<EnumerableApiResponse<T>, IEnumerable<T>>)this).PageSize);
 
-    IEnumerable<T>? IApiResponse<IEnumerable<T>>.Data { get; set; }
+    public IEnumerable<T>? Data { get; set; }
 
     ApiClient? IPageableApiResponse<EnumerableApiResponse<T>, IEnumerable<T>>.CurrentApiClient { get; set; }