add tests?

.github/workflows/test.yml

@@ -0,0 +1,26 @@
+# This workflow will build a .NET project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-net
+
+name: test
+
+on:
+  [push, pull_request]
+
+jobs:
+  test:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 8.0.x
+    - name: Restore dependencies
+      run: dotnet restore
+    - name: Build
+      run: dotnet build --no-restore
+    - name: Test
+      run: dotnet test --no-restore
+

Tests/AnalyticsRepositoryTests.cs

@@ -0,0 +1,34 @@
+using System.Data;
+using NSubstitute;
+using Xunit;
+using AnalyticsWebApi.Datamodel;
+using Dapper;
+
+namespace AnalyticsWebApi;
+
+public class AnalyticsRepositoryTests
+{
+    [Fact]
+    public async Task SaveAnalyticsData_ValidData_ReturnsSuccess()
+    {
+        // Arrange
+        var mockConnection = Substitute.For<IDbConnection>();
+        var repository = new AnalyticsRepository(""); // Pass an empty string here
+        var data = new AnalyticsData { 
+            Referer = "https://www.example.com",
+            IpAddress = "127.0.0.1",
+            DataKey = "test-key",
+            Data = "test-data"
+        };
+
+        mockConnection.ExecuteAsync(Arg.Any<string>(), Arg.Any<object>()).Returns(1);
+
+        // Act
+        int result = await repository.SaveAnalyticsData(data);
+
+        // Assert
+        Assert.Equal(1, result); 
+        // ... rest of your assertions
+    }
+
+}

myapp.csproj

@@ -10,7 +10,14 @@
     <PackageReference Include="Dapper" Version="2.1.35" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="8.0.6" />
     <PackageReference Include="Npgsql" Version="8.0.3" />
+    <PackageReference Include="NSubstitute" Version="5.1.0" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.6.2" />
+    <PackageReference Include="xunit" Version="2.8.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.1">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
 </Project>