Fix test

- Fix the options from DI not being passed through to the strategy.
- Assert that the strategy isn't null when retrieved.

test/Polly.Extensions.Tests/ReloadableResiliencePipelineTests.cs

@@ -1,7 +1,6 @@
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using NSubstitute;
-using Polly.DependencyInjection;
 using Polly.Registry;
 using Polly.Telemetry;
 
@@ -20,18 +19,21 @@ public void AddResiliencePipeline_EnsureReloadable(string? name)
         var resList = new List<IDisposable>();
         var reloadableConfig = new ReloadableConfiguration();
         reloadableConfig.Reload(new() { { "tag", "initial-tag" } });
-        var builder = new ConfigurationBuilder().Add(reloadableConfig);
         var fakeListener = new FakeTelemetryListener();
 
+        var configuration = new ConfigurationBuilder()
+            .Add(reloadableConfig)
+            .Build();
+
         var services = new ServiceCollection();
 
         if (name == null)
         {
-            services.Configure<ReloadableStrategyOptions>(builder.Build());
+            services.Configure<ReloadableStrategyOptions>(configuration);
         }
         else
         {
-            services.Configure<ReloadableStrategyOptions>(name, builder.Build());
+            services.Configure<ReloadableStrategyOptions>(name, configuration);
         }
 
         services.Configure<TelemetryOptions>(options => options.TelemetryListeners.Add(fakeListener));
@@ -40,6 +42,8 @@ public void AddResiliencePipeline_EnsureReloadable(string? name)
             builder.InstanceName = "my-instance";
 
             var options = context.GetOptions<ReloadableStrategyOptions>(name);
+            options.Should().NotBeNull();
+
             context.EnableReloads<ReloadableStrategyOptions>(name);
 
             builder.AddStrategy(_ =>
@@ -48,7 +52,7 @@ public void AddResiliencePipeline_EnsureReloadable(string? name)
                 resList.Add(res);
                 return new ReloadableStrategy(options.Tag, res);
             },
-            new ReloadableStrategyOptions());
+            options);
         });
 
         var serviceProvider = services.BuildServiceProvider();