From b205794d6ad7b50e140f615f367366e607571341 Mon Sep 17 00:00:00 2001
From: "Mengyuan Chen (from Dev Box)" <mengyuanchen@microsoft.com>
Date: Tue, 28 Jan 2025 22:00:17 +0800
Subject: [PATCH] Add fuzz test cases

---
 .../RegistryPreview.FuzzTests/FuzzTests.cs    | 26 ++++++++++
 .../MSTestSettings.cs                         |  5 ++
 .../OneFuzzConfig.json                        | 50 +++++++++++++++++++
 .../RegistryPreview.FuzzTests.csproj          | 28 +++++++++++
 4 files changed, 109 insertions(+)
 create mode 100644 src/modules/registrypreview/RegistryPreview.FuzzTests/FuzzTests.cs
 create mode 100644 src/modules/registrypreview/RegistryPreview.FuzzTests/MSTestSettings.cs
 create mode 100644 src/modules/registrypreview/RegistryPreview.FuzzTests/OneFuzzConfig.json
 create mode 100644 src/modules/registrypreview/RegistryPreview.FuzzTests/RegistryPreview.FuzzTests.csproj

diff --git a/src/modules/registrypreview/RegistryPreview.FuzzTests/FuzzTests.cs b/src/modules/registrypreview/RegistryPreview.FuzzTests/FuzzTests.cs
new file mode 100644
index 000000000000..f81bb1cc33e0
--- /dev/null
+++ b/src/modules/registrypreview/RegistryPreview.FuzzTests/FuzzTests.cs
@@ -0,0 +1,26 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+namespace RegistryPreview.FuzzTests
+{
+    public class FuzzTests
+    {
+        public static void FuzzTargetMethod(ReadOnlySpan<byte> input)
+        {
+            try
+            {
+                // … use input parameter in code under test …
+                //
+                // TargetMethod(…);
+            }
+            catch (Exception ex) when (ex is ArgumentException)
+            {
+                // This is an example. It's important to filter out any *expected* exceptions from our code here.
+                // However, catching all exceptions is considered an anti-pattern because it may suppress legitimate
+                // issues, such as a NullReferenceException thrown by our code. In this case, we still re-throw
+                // the exception, as the ToJsonFromXmlOrCsvAsync method is not expected to throw any exceptions.
+                throw;
+            }
+        }
+    }
+}
diff --git a/src/modules/registrypreview/RegistryPreview.FuzzTests/MSTestSettings.cs b/src/modules/registrypreview/RegistryPreview.FuzzTests/MSTestSettings.cs
new file mode 100644
index 000000000000..5b05c0b86e3f
--- /dev/null
+++ b/src/modules/registrypreview/RegistryPreview.FuzzTests/MSTestSettings.cs
@@ -0,0 +1,5 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+[assembly: Parallelize(Scope = ExecutionScope.MethodLevel)]
diff --git a/src/modules/registrypreview/RegistryPreview.FuzzTests/OneFuzzConfig.json b/src/modules/registrypreview/RegistryPreview.FuzzTests/OneFuzzConfig.json
new file mode 100644
index 000000000000..d86b7bf773c6
--- /dev/null
+++ b/src/modules/registrypreview/RegistryPreview.FuzzTests/OneFuzzConfig.json
@@ -0,0 +1,50 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+{
+  "configVersion": 3,
+  "entries": [
+    {
+      "fuzzer": {
+        "$type": "libfuzzerDotNet",
+        "dll": "RegistryPreview.FuzzTests.dll",
+        "class": "RegistryPreview.FuzzTests.FuzzTests",
+        "method": "FuzzTargetMethod",
+        "FuzzingTargetBinaries": [
+          "PowerToys.RegistryPreview.dll"
+        ]
+      },
+      "adoTemplate": {
+        // supply the values appropriate to your
+        // project, where bugs will be filed 
+        "org": "microsoft",
+        "project": "OS",
+        "AssignedTo": "mengyuanchen@microsoft.com",
+        "AreaPath": "OS\\Windows Client and Services\\WinPD\\DEEP-Developer Experience, Ecosystem and Partnerships\\SHINE\\PowerToys",
+        "IterationPath": "OS\\Future"
+      },
+      "jobNotificationEmail": "mengyuanchen@microsoft.com",
+      "skip": false,
+      "rebootAfterSetup": false,
+      "oneFuzzJobs": [
+        // at least one job is required
+        {
+          "projectName": "RegistryPreview",
+          "targetName": "RegistryPreview-dotnet-fuzzer"
+        }
+      ],
+      "jobDependencies": [
+        // this should contain, at minimum,
+        // the DLL and PDB files
+        // you will need to add any other files required
+        // (globs are supported)
+        "RegistryPreview.FuzzTests.dll",
+        "RegistryPreview.FuzzTests.pdb",
+        "Microsoft.Windows.SDK.NET.dll",
+        "Newtonsoft.Json.dll",
+        "WinRT.Runtime.dll"
+      ],
+      "SdlWorkItemId": 49911822
+    }
+  ]
+}
\ No newline at end of file
diff --git a/src/modules/registrypreview/RegistryPreview.FuzzTests/RegistryPreview.FuzzTests.csproj b/src/modules/registrypreview/RegistryPreview.FuzzTests/RegistryPreview.FuzzTests.csproj
new file mode 100644
index 000000000000..a196ccb1b120
--- /dev/null
+++ b/src/modules/registrypreview/RegistryPreview.FuzzTests/RegistryPreview.FuzzTests.csproj
@@ -0,0 +1,28 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <LangVersion>latest</LangVersion>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <OutputPath>..\..\..\..\$(Platform)\$(Configuration)\tests\RegistryPreview.FuzzTests\</OutputPath>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Content Include="OneFuzzConfig.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="MSTest" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Microsoft.VisualStudio.TestTools.UnitTesting" />
+  </ItemGroup>
+
+</Project>