refactor(slimfaas): add test to Program.cs

src/SlimFaas/Program.cs

@@ -94,3 +94,5 @@ static IAsyncPolicy<HttpResponseMessage> GetRetryPolicy()
         .WaitAndRetryAsync(3, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2,
             retryAttempt)));
 }
+
+public partial class Program { }

tests/SlimFaas.Tests/ProgramShould.cs

@@ -0,0 +1,25 @@
+using System.Net;
+using Microsoft.Extensions.Logging;
+using Moq;
+using System.Text.Json;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace SlimFaas.Tests;
+
+public class ProgramShould
+{
+    [Fact]
+    public async Task TestRootEndpoint()
+    {
+        Environment.SetEnvironmentVariable("MOCK_REDIS", "true");
+        Environment.SetEnvironmentVariable("MOCK_KUBERNETES_FUNCTIONS", "{\"Functions\":[{\"Name\":\"fibonacci1\",\"NumberParallelRequest\":1},{\"Name\":\"fibonacci2\",\"NumberParallelRequest\":1}]}");
+        await using var application = new WebApplicationFactory<Program>();
+        using var client = application.CreateClient();
+
+        var response = await client.GetStringAsync("/health");
+
+        Assert.Equal("OK", response);
+    }
+}

tests/SlimFaas.Tests/SlimFaas.Tests.csproj

@@ -15,6 +15,7 @@
           <PrivateAssets>all</PrivateAssets>
           <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
+        <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="7.0.5" />
         <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="7.0.5" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
         <PackageReference Include="KubernetesClient" Version="11.0.9" />