New test common project for database connections using the settings.json (#210)

* moved test driver tests and test common classes to separate projects

test/Microsoft.SqlTools.ServiceLayer.Test.Common/Scripts/Scripts.cs

@@ -0,0 +1,85 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using System;
+using System.IO;
+using System.Reflection;
+
+namespace Microsoft.SqlTools.ServiceLayer.Test.Common
+{
+    public class Scripts
+    {
+        private const string ResourceNameRefix = "Microsoft.SqlTools.ServiceLayer.Test.Common.Scripts.";
+
+        public const string MasterBasicQuery = "SELECT * FROM sys.all_columns"; //basic queries should return at least 10000 rows
+
+        public const string DelayQuery = "WAITFOR DELAY '00:01:00'";
+
+        public const string TestDbSimpleSelectQuery = "SELECT * FROM [Person].[Address]";
+
+        public const string SelectQuery = "SELECT * FROM ";
+
+        public const string DropDatabaseIfExist = @"
+IF EXISTS (SELECT 1 FROM [sys].[databases] WHERE [name] = '{0}') 
+BEGIN
+    ALTER DATABASE [{0}]
+    SET READ_WRITE;
+    ALTER DATABASE [{0}]
+    SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
+    DROP DATABASE [{0}];
+END
+";
+
+        public const string DropDatabaseIfExistAzure = @"
+IF EXISTS (SELECT 1 FROM [sys].[databases] WHERE [name] = '{0}') 
+BEGIN
+    DROP DATABASE [{0}];
+END
+";
+
+        public static string CreateDatabaseObjectsQuery { get { return CreateDatabaseObjectsQueryInstance.Value; } }
+
+        public static string CreateDatabaseQuery { get { return CreateDatabaseQueryInstance.Value; } }
+
+        public static string TestDbComplexSelectQueries { get { return TestDbSelectQueriesInstance.Value; } }
+
+        private static readonly Lazy<string> CreateDatabaseObjectsQueryInstance = new Lazy<string>(() =>
+        {
+            return GetScriptFileContent(ResourceNameRefix + "CreateTestDatabaseObjects.sql");
+        });
+
+        private static readonly Lazy<string> CreateDatabaseQueryInstance = new Lazy<string>(() =>
+        {
+            return GetScriptFileContent(ResourceNameRefix + "CreateTestDatabase.sql");
+        });
+
+        private static readonly Lazy<string> TestDbSelectQueriesInstance = new Lazy<string>(() =>
+        {
+            return GetScriptFileContent(ResourceNameRefix + "TestDbTableQueries.sql");
+        });
+
+        private static string GetScriptFileContent(string fileName)
+        {
+            string fileContent = string.Empty;
+            try
+            {
+                using (Stream stream = typeof(Scripts).GetTypeInfo().Assembly.GetManifestResourceStream(fileName))
+                {
+                    using (StreamReader reader = new StreamReader(stream))
+                    {
+                        fileContent = reader.ReadToEnd();
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Failed to load the sql script. error: {ex.Message}");
+            }
+            return fileContent;
+        }
+
+       
+    }
+}