Port Agent Runtime abstractions / inprocess runtime (#149)

dotnet/tests/Microsoft.Extensions.AI.Agents.Runtime.InProcess.UnitTests/TestSubscription.cs

@@ -0,0 +1,34 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System;
+using System.Diagnostics.CodeAnalysis;
+
+namespace Microsoft.Extensions.AI.Agents.Runtime.InProcess.Tests;
+
+public class TestSubscription(string topicType, string agentType, string? id = null) : ISubscriptionDefinition
+{
+    public string Id { get; } = id ?? Guid.NewGuid().ToString();
+
+    public string TopicType { get; } = topicType;
+
+    public AgentId MapToAgent(TopicId topic)
+    {
+        if (!this.Matches(topic))
+        {
+            throw new InvalidOperationException("TopicId does not match the subscription.");
+        }
+
+        return new AgentId(agentType, topic.Source);
+    }
+
+    public bool Equals(ISubscriptionDefinition? other) => this.Id == other?.Id;
+
+    public override bool Equals([NotNullWhen(true)] object? obj) => obj is TestSubscription other && other.Equals(this);
+
+    public override int GetHashCode() => this.Id.GetHashCode();
+
+    public bool Matches(TopicId topic)
+    {
+        return topic.Type == this.TopicType;
+    }
+}