Fix bindings tests (#1488)

test/Microsoft.SqlTools.ServiceLayer.Test.Common/Extensions/StringExtensions.cs

@@ -0,0 +1,20 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+namespace Microsoft.SqlTools.ServiceLayer.Test.Common.Extensions
+{
+    public static class StringExtensions
+    {
+        /// <summary>
+        /// Normalizes line endings, replacing all \r\n with \n.
+        /// </summary>
+        /// <param name="str">The string</param>
+        /// <returns>The string with all line endings normalized</returns>
+        public static string NormalizeLineEndings(this string str)
+        {
+            return str.Replace("\r\n", "\n");
+        }
+    }
+}