test

dotnet/tests/Microsoft.Agents.AI.Hosting.A2A.UnitTests/A2AIntegrationTests.cs

@@ -0,0 +1,89 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System;
+using System.Text.Json;
+using System.Threading.Tasks;
+using A2A;
+using Microsoft.Agents.AI.Hosting.A2A.UnitTests.Internal;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting.Server;
+using Microsoft.AspNetCore.TestHost;
+using Microsoft.Extensions.AI;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Microsoft.Agents.AI.Hosting.A2A.UnitTests;
+
+public sealed class A2AIntegrationTests
+{
+    /// <summary>
+    /// Verifies that calling the A2A card endpoint with MapA2A returns an agent card with a URL populated.
+    /// </summary>
+    [Fact]
+    public async Task MapA2A_WithAgentCard_CardEndpointReturnsCardWithUrlAsync()
+    {
+        // Arrange
+        WebApplicationBuilder builder = WebApplication.CreateBuilder();
+        builder.WebHost.UseTestServer();
+
+        IChatClient mockChatClient = new DummyChatClient();
+        builder.Services.AddKeyedSingleton("chat-client", mockChatClient);
+        IHostedAgentBuilder agentBuilder = builder.AddAIAgent("test-agent", "Test instructions", chatClientServiceKey: "chat-client");
+        builder.Services.AddLogging();
+
+        using WebApplication app = builder.Build();
+
+        var agentCard = new AgentCard
+        {
+            Name = "Test Agent",
+            Description = "A test agent for A2A communication",
+            Version = "1.0"
+        };
+
+        // Map A2A with the agent card
+        app.MapA2A(agentBuilder, "/a2a/test-agent", agentCard);
+
+        await app.StartAsync();
+
+        try
+        {
+            // Get the test server client
+            TestServer testServer = app.Services.GetRequiredService<IServer>() as TestServer
+                ?? throw new InvalidOperationException("TestServer not found");
+            var httpClient = testServer.CreateClient();
+
+            // Act - Query the agent card endpoint
+            var requestUri = new Uri("/a2a/test-agent/v1/card", UriKind.Relative);
+            var response = await httpClient.GetAsync(requestUri);
+
+            // Assert
+            Assert.True(response.IsSuccessStatusCode, $"Expected successful response but got {response.StatusCode}");
+
+            var content = await response.Content.ReadAsStringAsync();
+            var jsonDoc = JsonDocument.Parse(content);
+            var root = jsonDoc.RootElement;
+
+            // Verify the card has expected properties
+            Assert.True(root.TryGetProperty("name", out var nameProperty));
+            Assert.Equal("Test Agent", nameProperty.GetString());
+
+            Assert.True(root.TryGetProperty("description", out var descProperty));
+            Assert.Equal("A test agent for A2A communication", descProperty.GetString());
+
+            // Verify the card has a URL property and it's not null/empty
+            Assert.True(root.TryGetProperty("url", out var urlProperty));
+            Assert.NotEqual(JsonValueKind.Null, urlProperty.ValueKind);
+
+            var url = urlProperty.GetString();
+            Assert.NotNull(url);
+            Assert.NotEmpty(url);
+            Assert.StartsWith("http", url, StringComparison.OrdinalIgnoreCase);
+
+            // agentCard's URL matches the agent endpoint
+            Assert.Equal($"{testServer.BaseAddress.ToString().TrimEnd('/')}/a2a/test-agent", url);
+        }
+        finally
+        {
+            await app.StopAsync();
+        }
+    }
+}