1 files changed, 62 insertions, 0 deletions

diff --git a/src/WixBuildTools.TestSupport/Query.cs b/src/WixBuildTools.TestSupport/Query.cs
new file mode 100644
index 00000000..a5883067
--- /dev/null
+++ b/src/WixBuildTools.TestSupport/Query.cs
@@ -0,0 +1,62 @@
+// 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 WixBuildTools.TestSupport
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Text;
+    using WixToolset.Dtf.WindowsInstaller;
+
+    public class Query
+    {
+        public static string[] QueryDatabase(string path, string[] tables)
+        {
+            var results = new List<string>();
+
+            if (tables?.Length > 0)
+            {
+                var sb = new StringBuilder();
+                using (var db = new Database(path))
+                {
+                    foreach (var table in tables)
+                    {
+                        if (!db.IsTablePersistent(table))
+                        {
+                            continue;
+                        }
+
+                        using (var view = db.OpenView($"SELECT * FROM `{table}`"))
+                        {
+                            view.Execute();
+
+                            Record record;
+                            while ((record = view.Fetch()) != null)
+                            {
+                                sb.Clear();
+                                sb.AppendFormat("{0}:", table);
+
+                                using (record)
+                                {
+                                    for (var i = 0; i < record.FieldCount; ++i)
+                                    {
+                                        if (i > 0)
+                                        {
+                                            sb.Append("\t");
+                                        }
+
+                                        sb.Append(record[i + 1]?.ToString());
+                                    }
+                                }
+
+                                results.Add(sb.ToString());
+                            }
+                        }
+                    }
+                }
+            }
+
+            results.Sort();
+            return results.ToArray();
+        }
+    }
+}