Convert ext\ to MSTest and traversal projects.

- Move ext\ unit tests to MSTest.
- MSBuildify ext projects with MSTest execution.
- Fork test support projects for MSTest:
  - WixInternal.TestSupport
  - WixInternal.Core.TestPackage

1 files changed, 33 insertions, 0 deletions

diff --git a/src/internal/WixInternal.MSTestSupport/FakeBuildEngine.cs b/src/internal/WixInternal.MSTestSupport/FakeBuildEngine.cs
new file mode 100644
index 00000000..951d1bc8
--- /dev/null
+++ b/src/internal/WixInternal.MSTestSupport/FakeBuildEngine.cs
@@ -0,0 +1,33 @@
+// 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 WixInternal.MSTestSupport
+{
+    using System.Collections;
+    using System.Text;
+    using Microsoft.Build.Framework;
+
+    public class FakeBuildEngine : IBuildEngine
+    {
+        private readonly StringBuilder output = new StringBuilder();
+
+        public int ColumnNumberOfTaskNode => 0;
+
+        public bool ContinueOnError => false;
+
+        public int LineNumberOfTaskNode => 0;
+
+        public string ProjectFileOfTaskNode => "fake_wix.targets";
+
+        public string Output => this.output.ToString();
+
+        public bool BuildProjectFile(string projectFileName, string[] targetNames, IDictionary globalProperties, IDictionary targetOutputs) => throw new System.NotImplementedException();
+
+        public void LogCustomEvent(CustomBuildEventArgs e) => this.output.AppendLine(e.Message);
+
+        public void LogErrorEvent(BuildErrorEventArgs e) => this.output.AppendLine(e.Message);
+
+        public void LogMessageEvent(BuildMessageEventArgs e) => this.output.AppendLine(e.Message);
+
+        public void LogWarningEvent(BuildWarningEventArgs e) => this.output.AppendLine(e.Message);
+    }
+}