test fix

Author: f2calv

src/CasCap.Api.Knx.Tests/TestBase.cs

@@ -1,3 +1,6 @@
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Hosting.Internal;
+
 namespace CasCap.Tests;
 
 /// <summary>
@@ -35,6 +38,9 @@ protected TestBase(ITestOutputHelper output)
             services.AddKnx(configuration);
         }
 
+        IHostEnvironment env = new HostingEnvironment { EnvironmentName = Environments.Development };
+        services.AddSingleton(env);
+
         //assign services to be tested
         _serviceProvider = services.BuildServiceProvider();
         _knxGroupAddressLookupSvc = _serviceProvider.GetRequiredService<KnxGroupAddressLookupService>();