Next batch of code coverage tests. (#128)

Auto-merging test-only changes.  Please review the commit and I'll make changes in next iteration.

* Add more tests to boast code coverage

* Add more reliable connection tests.

test/Microsoft.SqlTools.ServiceLayer.TestDriver/Tests/WorkspaceTests.cs

@@ -0,0 +1,41 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using System.IO;
+using System.Threading.Tasks;
+using Microsoft.SqlTools.ServiceLayer.Hosting.Contracts;
+using Xunit;
+
+namespace Microsoft.SqlTools.ServiceLayer.TestDriver.Tests
+{
+    /// <summary>
+    /// Language Service end-to-end integration tests
+    /// </summary>
+    public class WorkspaceTests : TestBase
+    {
+        /// <summary>
+        /// Validate workspace lifecycle events
+        /// </summary>
+        [Fact]
+        public async Task InitializeRequestTest()
+        {
+            try
+            {
+                InitializeRequest initializeRequest = new InitializeRequest()
+                {
+                    RootPath = Path.GetTempPath(),
+                    Capabilities = new ClientCapabilities()
+                };                   
+                       
+                InitializeResult result = await Driver.SendRequest(InitializeRequest.Type, initializeRequest);
+                Assert.NotNull(result);
+            }
+            finally
+            {
+                WaitForExit();
+            }
+        }
+    }
+}