1 files changed, 54 insertions, 0 deletions

diff --git a/src/test/msi/WixToolsetTest.MsiE2E/XmlConfigTests.cs b/src/test/msi/WixToolsetTest.MsiE2E/XmlConfigTests.cs
new file mode 100644
index 00000000..9b90cf46
--- /dev/null
+++ b/src/test/msi/WixToolsetTest.MsiE2E/XmlConfigTests.cs
@@ -0,0 +1,54 @@
+// 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.
+
+namespace WixToolsetTest.MsiE2E;
+
+using System;
+using System.IO;
+using System.Xml.Linq;
+using WixTestTools;
+using Xunit;
+using Xunit.Abstractions;
+
+public class XmlConfigTests : MsiE2ETests
+{
+    public XmlConfigTests(ITestOutputHelper testOutputHelper) : base(testOutputHelper)
+    {
+    }
+
+    [RuntimeFact]
+    public void CanModifyXmlFileWithXmlConfig()
+    {
+        var product = this.CreatePackageInstaller("XmlConfig");
+
+        product.InstallProduct(MSIExec.MSIExecReturnCode.SUCCESS);
+
+        // Validate the expected changes in my.xml.
+        var myXmlPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86), "XmlConfig", "my.xml");
+        var content = File.ReadAllText(myXmlPath);
+        var xDoc = XDocument.Parse(content);
+
+        var xRoot = xDoc.Element("root");
+        var xChild1 = xRoot.Element("child1");
+        Assert.NotNull(xChild1);
+
+        var xGrandchild1 = xChild1.Element("grandchild1");
+        Assert.Null(xGrandchild1);
+
+        var xChild2 = xRoot.Element("child2");
+        Assert.NotNull(xChild2);
+
+        var xGrandchild3 = xChild2.Element("grandchild3");
+        Assert.NotNull(xGrandchild3);
+        Assert.True(xGrandchild3.HasAttributes);
+
+        var xAttribute1 = xGrandchild3.Attribute("TheAttribute1");
+        Assert.NotNull(xAttribute1);
+        Assert.Equal("AttributeValue1", xAttribute1.Value);
+
+        var xAttribute2 = xGrandchild3.Attribute("TheAttribute2");
+        Assert.NotNull(xAttribute2);
+        Assert.Equal("AttributeValue2", xAttribute2.Value);
+
+        product.UninstallProduct(MSIExec.MSIExecReturnCode.SUCCESS);
+    }
+}