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diff --git a/src/test/WixToolsetTest.CoreIntegration/ExtensionFixture.cs b/src/test/WixToolsetTest.CoreIntegration/ExtensionFixture.cs
new file mode 100644
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+++ b/src/test/WixToolsetTest.CoreIntegration/ExtensionFixture.cs
@@ -0,0 +1,60 @@
+// 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.CoreIntegration
+{
+    using System;
+    using System.IO;
+    using System.Linq;
+    using Example.Extension;
+    using WixToolset.Core;
+    using WixToolset.Data;
+    using WixToolset.Data.Tuples;
+    using WixToolsetTest.CoreIntegration.Utility;
+    using Xunit;
+
+    public class ExtensionFixture
+    {
+        [Fact]
+        public void CanBuildWithExampleExtension()
+        {
+            var folder = TestData.Get(@"TestData\ExampleExtension");
+            var extensionPath = Path.GetFullPath(new Uri(typeof(ExampleExtensionFactory).Assembly.CodeBase).LocalPath);
+
+            using (var fs = new DisposableFileSystem())
+            {
+                var intermediateFolder = fs.GetFolder();
+
+                var program = new Program();
+                var result = program.Run(new WixToolsetServiceProvider(), new[]
+                {
+                    "build",
+                    Path.Combine(folder, "Package.wxs"),
+                    Path.Combine(folder, "PackageComponents.wxs"),
+                    "-loc", Path.Combine(folder, "Package.en-us.wxl"),
+                    "-ext", extensionPath,
+                    "-bindpath", Path.Combine(folder, "data"),
+                    "-intermediateFolder", intermediateFolder,
+                    "-o", Path.Combine(intermediateFolder, @"bin\extest.msi")
+                });
+
+                Assert.Equal(0, result);
+
+                Assert.True(File.Exists(Path.Combine(intermediateFolder, @"bin\extest.msi")));
+                Assert.True(File.Exists(Path.Combine(intermediateFolder, @"bin\extest.wixpdb")));
+                Assert.True(File.Exists(Path.Combine(intermediateFolder, @"bin\MsiPackage\example.txt")));
+
+                var intermediate = Intermediate.Load(Path.Combine(intermediateFolder, @"bin\extest.wir"));
+                Assert.Single(intermediate.Sections);
+
+                var wixFile = intermediate.Sections.SelectMany(s => s.Tuples).OfType<WixFileTuple>().Single();
+                Assert.Equal(Path.Combine(folder, @"data\example.txt"), wixFile[WixFileTupleFields.Source].AsPath().Path);
+                Assert.Equal(@"example.txt", wixFile[WixFileTupleFields.Source].PreviousValue.AsPath().Path);
+
+                var example = intermediate.Sections.SelectMany(s => s.Tuples).Where(t => t.Definition.Type == TupleDefinitionType.MustBeFromAnExtension).Single();
+                Assert.Equal("Foo", example.Id.Id);
+                Assert.Equal("Foo", example[0].AsString());
+                Assert.Equal("Bar", example[1].AsString());
+            }
+        }
+    }
+}