5 files changed, 118 insertions, 11 deletions

diff --git a/src/test/wix/TestData/WixprojModuleCsprojWinFormsNetFx/WixprojModuleCsprojWinFormsNetFx.wixproj b/src/test/wix/TestData/WixprojModuleCsprojWinFormsNetFx/WixprojModuleCsprojWinFormsNetFx.wixproj
index 07e42b08..6009460c 100644
--- a/src/test/wix/TestData/WixprojModuleCsprojWinFormsNetFx/WixprojModuleCsprojWinFormsNetFx.wixproj
+++ b/src/test/wix/TestData/WixprojModuleCsprojWinFormsNetFx/WixprojModuleCsprojWinFormsNetFx.wixproj
@@ -1,19 +1,11 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
+
  <Project Sdk='WixToolset.Sdk'> 
-<!--<Project>
-  <Import Sdk="WixToolset.Sdk" Project='D:\src\wix4\build\wix\Debug\netcoreapp3.1\Sdk\Sdk.props' />-->
   <PropertyGroup>
     <OutputType>Module</OutputType>
   </PropertyGroup>
 
-  <!--<PropertyGroup>
-    <WixBinDir>D:\src\wix4\build\wix\Debug\publish\WixToolset.Sdk\tools\net461\x86\</WixBinDir>
-    <WixBinDir64>D:\src\wix4\build\wix\Debug\publish\WixToolset.Sdk\tools\net461\x64\</WixBinDir64>
-  </PropertyGroup>-->
-
   <ItemGroup>
     <ProjectReference Include="..\CsprojWindowsFormsNetFx\CsprojWindowsFormsNetFx.csproj" />
   </ItemGroup>
-
-  <!--<Import Sdk="WixToolset.Sdk" Project='D:\src\wix4\build\wix\Debug\netcoreapp3.1\Sdk\Sdk.targets' />-->
 </Project>
diff --git a/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/Package.ja-jp.wxl b/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/Package.ja-jp.wxl
index 52e1871e..0f902c8d 100644
--- a/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/Package.ja-jp.wxl
+++ b/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/Package.ja-jp.wxl
@@ -5,7 +5,7 @@ This file contains the declaration of all the localizable strings.
 -->
 <WixLocalization xmlns="http://wixtoolset.org/schemas/v4/wxl" Culture="ja-JP">
 
-  <String Id="PackageName">WixprojPackageVcxprojWindowsApp, eh?</String>
+  <String Id="PackageName">WixprojPackageVcxprojWindowsApp-jp</String>
   <String Id="FeatureTitle">The First Feature in my Prooooduct, eh?</String>
 
 </WixLocalization>
diff --git a/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/Package.wxs b/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/Package.wxs
index fe849608..508d4721 100644
--- a/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/Package.wxs
+++ b/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/Package.wxs
@@ -1,5 +1,7 @@
-<Wix xmlns="http://wixtoolset.org/schemas/v4/wxs">
+<Wix xmlns="http://wixtoolset.org/schemas/v4/wxs"
+     xmlns:ui="http://wixtoolset.org/schemas/v4/wxs/ui">
   <Package Name='!(loc.PackageName)' Manufacturer='WiX Toolset' Version='0.0.1' UpgradeCode='41a2c17e-1976-465b-bcde-eae03516ca68'>
+    <SoftwareTag Regid='wixtoolset.org' InstallDirectory='ApplicationFolder' />
 
     <StandardDirectory Id='ProgramFiles6432Folder'>
       <Directory Id='ApplicationFolder' Name='Test App'>
@@ -16,5 +18,7 @@
 
       <MergeRef Id='WinFormsModule' />
     </Feature>
+
+    <ui:WixUI Id="WixUI_Minimal" />
   </Package>
 </Wix>
diff --git a/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/WixprojPackageVcxprojWindowsApp.wixproj b/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/WixprojPackageVcxprojWindowsApp.wixproj
index 7dc26a2d..bbd39870 100644
--- a/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/WixprojPackageVcxprojWindowsApp.wixproj
+++ b/src/test/wix/TestData/WixprojPackageVcxprojWindowsApp/WixprojPackageVcxprojWindowsApp.wixproj
@@ -5,5 +5,7 @@
     <ProjectReference Include="..\VcxprojWindowsApp\VcxprojWindowsApp.vcxproj" />
     <ProjectReference Include="..\WixprojLibraryVcxprojDll\WixprojLibraryVcxprojDll.wixproj" />
     <ProjectReference Include="..\WixprojModuleCsprojWinFormsNetFx\WixprojModuleCsprojWinFormsNetFx.wixproj" />
+
+    <PackageReference Include="Wixtoolset.UI.wixext" Version="4.0.0-preview.1-build.205" />
   </ItemGroup>
 </Project>
diff --git a/src/test/wix/WixE2E/WixE2EFixture.cs b/src/test/wix/WixE2E/WixE2EFixture.cs
index 89762f72..b1c6b2de 100644
--- a/src/test/wix/WixE2E/WixE2EFixture.cs
+++ b/src/test/wix/WixE2E/WixE2EFixture.cs
@@ -2,7 +2,12 @@
 
 namespace WixE2E
 {
+    using System;
     using System.IO;
+    using System.Linq;
+    using System.Security.Cryptography;
+    using System.Text;
+    using System.Threading;
     using WixBuildTools.TestSupport;
     using Xunit;
 
@@ -52,6 +57,93 @@ namespace WixE2E
             result.AssertSuccess();
         }
 
+        [Fact]
+        public void CanIncrementalBuildPackageWithNativeWindowsAppWithNoEdits()
+        {
+            var projectDirectory = TestData.Get("TestData", "WixprojPackageVcxprojWindowsApp");
+            var projectPath = Path.Combine(projectDirectory, "WixprojPackageVcxprojWindowsApp.wixproj");
+            var projectBinPath = Path.Combine(projectDirectory, "bin");
+
+            CleanEverything();
+
+            var result = RestoreAndBuild(projectPath);
+            result.AssertSuccess();
+
+            var firstBuiltFiles = Directory.GetFiles(projectBinPath, "*.*", SearchOption.AllDirectories).ToArray();
+            var firstHashes = firstBuiltFiles.Select(s => $"{s.Substring(projectBinPath.Length).TrimStart('\\')} with hash: {GetFileHash(s)}").ToArray();
+
+            // This should be an incremental build and not do any work.
+            //
+            result = RestoreAndBuild(projectPath);
+            result.AssertSuccess();
+
+            var secondBuiltFiles = Directory.GetFiles(projectBinPath, "*.*", SearchOption.AllDirectories).ToArray();
+            var secondHashes = secondBuiltFiles.Select(s => $"{s.Substring(projectBinPath.Length).TrimStart('\\')} with hash: {GetFileHash(s)}").ToArray();
+
+            WixAssert.CompareLineByLine(firstHashes, secondHashes);
+        }
+
+        [Fact]
+        public void CanIncrementalBuildPackageWithNativeWindowsAppWithEdits()
+        {
+            var projectDirectory = TestData.Get("TestData", "WixprojPackageVcxprojWindowsApp");
+            var projectPath = Path.Combine(projectDirectory, "WixprojPackageVcxprojWindowsApp.wixproj");
+            var projectBinPath = Path.Combine(projectDirectory, "bin");
+
+            CleanEverything();
+
+            var result = RestoreAndBuild(projectPath);
+            result.AssertSuccess();
+
+            var firstBuiltFiles = Directory.GetFiles(projectBinPath, "*.*", SearchOption.AllDirectories).ToArray();
+            var firstRelativePaths = firstBuiltFiles.Select(s => $"{s.Substring(projectBinPath.Length).TrimStart('\\')}").ToArray();
+            var firstHashes = firstBuiltFiles.Select(s => $"{s.Substring(projectBinPath.Length).TrimStart('\\')} with hash: {GetFileHash(s)}").ToArray();
+
+            var packageWxsPath = Path.Combine(projectDirectory, "Package.wxs");
+            File.SetLastWriteTime(packageWxsPath, DateTime.Now);
+
+            // This should be an incremental build that does work because a file was updated.
+            //
+            result = RestoreAndBuild(projectPath);
+            result.AssertSuccess();
+
+            var secondBuiltFiles = Directory.GetFiles(projectBinPath, "*.*", SearchOption.AllDirectories).ToArray();
+            var secondRelativePaths = secondBuiltFiles.Select(s => $"{s.Substring(projectBinPath.Length).TrimStart('\\')}").ToArray();
+            var secondHashes = secondBuiltFiles.Select(s => $"{s.Substring(projectBinPath.Length).TrimStart('\\')} with hash: {GetFileHash(s)}").ToArray();
+
+            WixAssert.CompareLineByLine(firstRelativePaths, secondRelativePaths);
+            Assert.NotEqual(firstHashes, secondHashes);
+        }
+
+        [Fact(Skip = "Investigate if .NET Core WebApplications can be incrementally built")]
+        public void CanIncrementalBuildPackageWithNetCoreWebAppWithoutEdits()
+        {
+            var projectDirectory = TestData.Get("TestData", "WixprojPackageCsprojWebApplicationNetCore");
+            var projectPath = Path.Combine(projectDirectory, "WixprojPackageCsprojWebApplicationNetCore.wixproj");
+            var projectBinPath = Path.Combine(projectDirectory, "bin");
+
+            CleanEverything();
+
+            var result = RestoreAndBuild(projectPath);
+            result.AssertSuccess();
+
+            var firstBuiltFiles = Directory.GetFiles(projectBinPath, "*.*", SearchOption.AllDirectories).ToArray();
+            var firstHashes = firstBuiltFiles.Select(s => $"{s.Substring(projectBinPath.Length).TrimStart('\\')} with hash: {GetFileHash(s)}").ToArray();
+
+            //var packageWxsPath = Path.Combine(projectDirectory, "Package.wxs");
+            //File.SetLastWriteTime(packageWxsPath, DateTime.Now);
+
+            // This should be an incremental build that does work because a file was updated.
+            //
+            result = RestoreAndBuild(projectPath);
+            result.AssertSuccess();
+
+            var secondBuiltFiles = Directory.GetFiles(projectBinPath, "*.*", SearchOption.AllDirectories).ToArray();
+            var secondHashes = secondBuiltFiles.Select(s => $"{s.Substring(projectBinPath.Length).TrimStart('\\')} with hash: {GetFileHash(s)}").ToArray();
+
+            WixAssert.CompareLineByLine(firstHashes, secondHashes);
+        }
+
         private static void CleanEverything()
         {
             var rootFolder = TestData.Get("TestData");
@@ -71,6 +163,23 @@ namespace WixE2E
             }
         }
 
+        private static string GetFileHash(string path)
+        {
+            using (var sha2 = SHA256.Create())
+            {
+                var bytes = File.ReadAllBytes(path);
+                var hashBytes = sha2.ComputeHash(bytes);
+
+                var sb = new StringBuilder();
+                foreach (var hash in hashBytes)
+                {
+                    sb.AppendFormat("{0:X}", hash);
+                }
+
+                return sb.ToString();
+            }
+        }
+
         private static MsbuildRunnerResult RestoreAndBuild(string projectPath, bool x64 = true)
         {
             return MsbuildRunner.Execute(projectPath, new[] { "-Restore", "-v:m", "-bl" }, x64);