Introduce Polly.Testing package

src/Polly.Testing/InnerStrategiesDescriptor.cs

@@ -1,7 +1,7 @@
 namespace Polly.Testing;
 
 /// <summary>
-/// Describes the pipeline of resilience strategy.
+/// Describes the pipeline of a resilience strategy.
 /// </summary>
 /// <param name="Strategies">The strategies the pipeline is composed of.</param>
 /// <param name="HasTelemetry">Gets a value indicating whether the pipeline has telemetry enabled.</param>

src/Polly.Testing/README.md

@@ -1,3 +1,28 @@
 # About Polly.Testing
 
+This package exposes API and utilities that can be used to assert the composition of resilience strategies.
 
+``` csharp
+// Build your resilience strategy.
+ResilienceStrategy strategy = new ResilienceStrategyBuilder()
+    .AddRetry(new RetryStrategyOptions
+    {
+        RetryCount = 4
+    })
+    .AddTimeout(TimeSpan.FromSeconds(1))
+    .ConfigureTelemetry(NullLoggerFactory.Instance)
+    .Build();
+
+// Retrieve inner strategies.
+InnerStrategiesDescriptor descriptor = strategy.GetInnerStrategies();
+
+// Assert the composition.
+Assert.True(descriptor.HasTelemetry);
+Assert.Equal(2, descriptor.Strategies.Count);
+
+var retryOptions = Assert.IsType<RetryStrategyOptions>(descriptor.Strategies[0]);
+Assert.Equal(4, retryOptions.RetryCount);
+
+var timeoutOptions = Assert.IsType<TimeoutStrategyOptions>(descriptor.Strategies[0]);
+Assert.Equal(TimeSpan.FromSeconds(1), timeoutOptions.Timeout);
+```