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/ConnectionSetting.cs

@@ -0,0 +1,84 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using Newtonsoft.Json;
+
+namespace Microsoft.SqlTools.ServiceLayer.Test.Common
+{
+    /// <summary>
+    /// The model for deserializing settings.json
+    /// </summary>
+    public class ConnectionSetting
+    {
+        [JsonProperty("mssql.connections")]
+        public List<ConnectionProfile> Connections { get; set; }
+
+        public ConnectionProfile GetConnectionProfile(string profileName, string serverName)
+        {
+            if (!string.IsNullOrEmpty(profileName) && Connections != null)
+            {
+                var byProfileName = Connections.FirstOrDefault(x => x.ProfileName == profileName);
+                if (byProfileName != null)
+                {
+                    return byProfileName;
+                }
+            }
+            return Connections.FirstOrDefault(x => x.ServerName == serverName);
+        }
+    }
+
+    /// <summary>
+    /// The model to deserializing the connections inside settings.json
+    /// </summary>
+    public class ConnectionProfile
+    {
+        public const string CRED_PREFIX = "Microsoft.SqlTools";
+        public const string CRED_SEPARATOR = "|";
+        public const string CRED_SERVER_PREFIX = "server:";
+        public const string CRED_DB_PREFIX = "db:";
+        public const string CRED_USER_PREFIX = "user:";
+        public const string CRED_ITEMTYPE_PREFIX = "itemtype:";
+
+        [JsonProperty("server")]
+        public string ServerName { get; set; }
+        public string Database { get; set; }
+
+        public string User { get; set; }
+
+        public string Password { get; set; }
+
+        public string ProfileName { get; set; }
+
+        public TestServerType ServerType { get; set; }
+
+        public AuthenticationType AuthenticationType { get; set; }
+
+
+        public string formatCredentialId(string itemType = "Profile")
+        {
+            if (!string.IsNullOrEmpty(ServerName))
+            {
+                List<string> cred = new List<string>();
+                cred.Add(CRED_PREFIX);
+                AddToList(itemType, CRED_ITEMTYPE_PREFIX, cred);
+                AddToList(ServerName, CRED_SERVER_PREFIX, cred);
+                AddToList(Database, CRED_DB_PREFIX, cred);
+                AddToList(User, CRED_USER_PREFIX, cred);
+                return string.Join(CRED_SEPARATOR, cred.ToArray());
+            }
+            return null;
+        }
+        private void AddToList(string item, string prefix, List<string> list)
+        {
+            if (!string.IsNullOrEmpty(item))
+            {
+                list.Add(string.Format(CultureInfo.InvariantCulture, "{0}{1}", prefix, item));
+            }
+        }
+    }
+}