chore: import upstream snapshot with attribution

dotnet/tests/Microsoft.Agents.AI.Foundry.Hosting.UnitTests/FoundryAIToolExtensionsTests.cs

@@ -0,0 +1,75 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System;
+
+namespace Microsoft.Agents.AI.Foundry.Hosting.UnitTests;
+
+public class FoundryAIToolExtensionsTests
+{
+    [Fact]
+    public void CreateHostedMcpToolbox_FromToolboxRecord_UsesNameAndDefaultVersion()
+    {
+        var record = Azure.AI.Projects.Agents.ProjectsAgentsModelFactory.ToolboxRecord(
+            id: "tbx-123",
+            name: "calendar-tools",
+            defaultVersion: "v2");
+
+        var tool = FoundryAIToolExtensions.CreateHostedMcpToolbox(record);
+
+        var marker = Assert.IsType<HostedMcpToolboxAITool>(tool);
+        Assert.Equal("calendar-tools", marker.ToolboxName);
+        Assert.Equal("v2", marker.Version);
+        Assert.Equal("foundry-toolbox://calendar-tools?version=v2", marker.ServerAddress);
+    }
+
+    [Fact]
+    public void CreateHostedMcpToolbox_FromToolboxRecord_NullDefaultVersionOmitsQuery()
+    {
+        var record = Azure.AI.Projects.Agents.ProjectsAgentsModelFactory.ToolboxRecord(
+            id: "tbx-abc",
+            name: "finance-tools",
+            defaultVersion: null);
+
+        var tool = FoundryAIToolExtensions.CreateHostedMcpToolbox(record);
+
+        var marker = Assert.IsType<HostedMcpToolboxAITool>(tool);
+        Assert.Equal("finance-tools", marker.ToolboxName);
+        Assert.Null(marker.Version);
+        Assert.Equal("foundry-toolbox://finance-tools", marker.ServerAddress);
+    }
+
+    [Fact]
+    public void CreateHostedMcpToolbox_FromToolboxRecord_Null_Throws()
+    {
+        Assert.Throws<ArgumentNullException>(
+            () => FoundryAIToolExtensions.CreateHostedMcpToolbox((Azure.AI.Projects.Agents.ToolboxRecord)null!));
+    }
+
+    [Fact]
+    public void CreateHostedMcpToolbox_FromToolboxVersion_UsesNameAndVersion()
+    {
+        var version = Azure.AI.Projects.Agents.ProjectsAgentsModelFactory.ToolboxVersion(
+            metadata: null,
+            id: "ver-1",
+            name: "hr-tools",
+            version: "2025-09-01",
+            description: "HR toolbox",
+            createdAt: DateTimeOffset.UtcNow,
+            tools: null,
+            policies: null);
+
+        var tool = FoundryAIToolExtensions.CreateHostedMcpToolbox(version);
+
+        var marker = Assert.IsType<HostedMcpToolboxAITool>(tool);
+        Assert.Equal("hr-tools", marker.ToolboxName);
+        Assert.Equal("2025-09-01", marker.Version);
+        Assert.Equal("foundry-toolbox://hr-tools?version=2025-09-01", marker.ServerAddress);
+    }
+
+    [Fact]
+    public void CreateHostedMcpToolbox_FromToolboxVersion_Null_Throws()
+    {
+        Assert.Throws<ArgumentNullException>(
+            () => FoundryAIToolExtensions.CreateHostedMcpToolbox((Azure.AI.Projects.Agents.ToolboxVersion)null!));
+    }
+}