chore: import upstream snapshot with attribution

dotnet/tests/Foundry.Hosting.IntegrationTests/ToolCallingApprovalHostedAgentTests.cs

@@ -0,0 +1,86 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Linq;
+using System.Threading.Tasks;
+using Foundry.Hosting.IntegrationTests.Fixtures;
+using Microsoft.Extensions.AI;
+
+namespace Foundry.Hosting.IntegrationTests;
+
+/// <summary>
+/// Tests for the human in the loop tool approval flow: the container declares an AIFunction
+/// flagged as requiring approval, and the model raises a <see cref="ToolApprovalRequestContent"/>
+/// before the tool executes.
+/// </summary>
+[Trait("Category", "FoundryHostedAgents")]
+public sealed class ToolCallingApprovalHostedAgentTests(ToolCallingApprovalHostedAgentFixture fixture)
+    : IClassFixture<ToolCallingApprovalHostedAgentFixture>
+{
+    private readonly ToolCallingApprovalHostedAgentFixture _fixture = fixture;
+
+    [Fact(Skip = "Pending TestContainer build and end to end smoke (step 5).")]
+    public async Task ApprovalRequiredTool_RaisesApprovalRequestAsync()
+    {
+        // Arrange
+        var agent = this._fixture.Agent;
+
+        // Act
+        var response = await agent.RunAsync("Run the SendEmail tool with subject='hi' to test@example.com.");
+
+        // Assert
+        var approvalRequest = response.Messages
+            .SelectMany(m => m.Contents.OfType<ToolApprovalRequestContent>())
+            .FirstOrDefault();
+        Assert.NotNull(approvalRequest);
+    }
+
+    [Fact(Skip = "Pending TestContainer build and end to end smoke (step 5).")]
+    public async Task ApprovalGranted_ToolRunsAndResponseReflectsResultAsync()
+    {
+        // Arrange
+        var agent = this._fixture.Agent;
+        var session = await agent.CreateSessionAsync();
+        var first = await agent.RunAsync("Run the SendEmail tool with subject='ok' to test@example.com.", session);
+        var approvalRequest = first.Messages
+            .SelectMany(m => m.Contents.OfType<ToolApprovalRequestContent>())
+            .First();
+
+        var approvalResponse = approvalRequest.CreateResponse(approved: true);
+        var followUp = new ChatMessage(ChatRole.User, [approvalResponse]);
+
+        // Act
+        var second = await agent.RunAsync([followUp], session);
+
+        // Assert: model received the tool result and produced a final response.
+        Assert.False(string.IsNullOrWhiteSpace(second.Text));
+        var hasFurtherApprovalRequest = second.Messages
+            .SelectMany(m => m.Contents.OfType<ToolApprovalRequestContent>())
+            .Any();
+        Assert.False(hasFurtherApprovalRequest, "Did not expect another approval request after granting.");
+    }
+
+    [Fact(Skip = "Pending TestContainer build and end to end smoke (step 5).")]
+    public async Task ApprovalDenied_ToolDoesNotRunAsync()
+    {
+        // Arrange
+        var agent = this._fixture.Agent;
+        var session = await agent.CreateSessionAsync();
+        var first = await agent.RunAsync("Run the SendEmail tool with subject='no' to test@example.com.", session);
+        var approvalRequest = first.Messages
+            .SelectMany(m => m.Contents.OfType<ToolApprovalRequestContent>())
+            .First();
+
+        var approvalResponse = approvalRequest.CreateResponse(approved: false);
+        var followUp = new ChatMessage(ChatRole.User, [approvalResponse]);
+
+        // Act
+        var second = await agent.RunAsync([followUp], session);
+
+        // Assert: no FunctionResultContent for SendEmail in the response.
+        Assert.False(string.IsNullOrWhiteSpace(second.Text));
+        var sendEmailResults = second.Messages
+            .SelectMany(m => m.Contents.OfType<FunctionResultContent>())
+            .Where(r => r.CallId == approvalRequest.ToolCall?.CallId);
+        Assert.Empty(sendEmailResults);
+    }
+}