From 8102008b8ae24e1f12038084292706bbd3bee791 Mon Sep 17 00:00:00 2001
From: "Erik Mavrinac (from Dev Box)" <erikmav@microsoft.com>
Date: Tue, 27 Jun 2023 16:17:49 -0700
Subject: [PATCH] Add tests for Windows Alternate Data Streams per #24

---
 exe/CoWCloneFile.csproj                       |  2 +-
 global.json                                   |  4 +--
 tests/benchmark/CoWBenchmark.csproj           |  2 +-
 .../unit/Windows/CopyOnWriteTests_Windows.cs  | 30 +++++++++++++++++++
 4 files changed, 34 insertions(+), 4 deletions(-)

diff --git a/exe/CoWCloneFile.csproj b/exe/CoWCloneFile.csproj
index 0148517..93e1409 100644
--- a/exe/CoWCloneFile.csproj
+++ b/exe/CoWCloneFile.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="CommandLineParser" Version="2.8.0" />
+    <PackageReference Include="CommandLineParser" Version="2.9.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/global.json b/global.json
index 4e3dc8a..585f8d0 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "6.0.400",
-    "rollForward": "feature"
+    "version": "6.0",
+    "rollForward": "minor"
   }
 }
diff --git a/tests/benchmark/CoWBenchmark.csproj b/tests/benchmark/CoWBenchmark.csproj
index 06b92a8..324f395 100644
--- a/tests/benchmark/CoWBenchmark.csproj
+++ b/tests/benchmark/CoWBenchmark.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.13.2" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.13.5" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/unit/Windows/CopyOnWriteTests_Windows.cs b/tests/unit/Windows/CopyOnWriteTests_Windows.cs
index 23e69c1..d5161b3 100644
--- a/tests/unit/Windows/CopyOnWriteTests_Windows.cs
+++ b/tests/unit/Windows/CopyOnWriteTests_Windows.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
@@ -133,6 +134,35 @@ public async Task ReFSPositiveDetectionAndCloneFileCorrectBehavior(CloneFlags cl
         string dest2Contents = await File.ReadAllTextAsync(dest2Path);
         Assert.AreEqual("AABBCCDD", dest2Contents);
 
+        // Clone a file with an Alternate Data Stream.
+        string adsSource = Path.Combine(refsTestRoot, "AltDataStreamSource");
+        var adsSourceFI = new FileInfo(adsSource);
+        await File.WriteAllTextAsync(adsSource, "aaaaa");
+        await File.WriteAllTextAsync(adsSource + ":x", "bbbbbbb");
+        string adsDest = Path.Combine(refsTestRoot, "AltDataStreamDestination");
+        cow.CloneFile(adsSource, adsDest, cloneFlags);
+        Assert.IsTrue(File.Exists(adsDest));
+        var adsDestFI = new FileInfo(adsDest);
+        Assert.AreEqual(adsSourceFI.Length, adsDestFI.Length);
+        string adsDestContents = await File.ReadAllTextAsync(adsDest);
+        Assert.AreEqual("aaaaa", adsDestContents);
+        Assert.IsFalse(File.Exists(adsDest + ":x"), "Expect that the alt data stream was not cloned");
+
+        const int ERROR_NOT_SUPPORTED = 50;
+        try
+        {
+            cow.CloneFile(source1Path, adsDest + ":x", cloneFlags);
+            Assert.Fail("Expected ERROR_NOT_SUPPORTED exception. Has cloning an alt data stream been added in newer Windows?");
+        }
+        catch (Win32Exception win32Ex) when (win32Ex.NativeErrorCode == ERROR_NOT_SUPPORTED)
+        {
+            // Expected.
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine(ex.ToString());
+        }
+
         // TODO: Clone a hardlink and symlink.
 
         // Delete original file, ensure clones remain materialized.