Feature/batch line info (#56)

* inital pipe of line numbers and getting text from workspace services

* tests compile

* Fixed bug regarding tests using connections on mac

* updated tests

* fixed workspace service and fixed tests

* integrated feedback

src/Microsoft.SqlTools.ServiceLayer/Workspace/Contracts/ScriptFile.cs

@@ -56,7 +56,7 @@ namespace Microsoft.SqlTools.ServiceLayer.Workspace.Contracts
         /// Gets or sets a string containing the full contents of the file.
         /// Setter for testing purposes only
         /// </summary>
-        public string Contents 
+        public virtual string Contents 
         {
             get
             {
@@ -109,7 +109,7 @@ namespace Microsoft.SqlTools.ServiceLayer.Workspace.Contracts
         /// <summary>
         /// Add a default constructor for testing
         /// </summary>
-        internal ScriptFile()
+        public ScriptFile()
         {
             ClientFilePath = "test.sql";
         }
@@ -171,11 +171,12 @@ namespace Microsoft.SqlTools.ServiceLayer.Workspace.Contracts
         }
 
         /// <summary>
-        /// Gets a range of lines from the file's contents.
+        /// Gets a range of lines from the file's contents. Virtual method to allow for
+        /// mocking.
         /// </summary>
         /// <param name="bufferRange">The buffer range from which lines will be extracted.</param>
         /// <returns>An array of strings from the specified range of the file.</returns>
-        public string[] GetLinesInRange(BufferRange bufferRange)
+        public virtual string[] GetLinesInRange(BufferRange bufferRange)
         {
             this.ValidatePosition(bufferRange.Start);
             this.ValidatePosition(bufferRange.End);

src/Microsoft.SqlTools.ServiceLayer/Workspace/Workspace.cs

@@ -50,7 +50,8 @@ namespace Microsoft.SqlTools.ServiceLayer.Workspace
 
         /// <summary>
         /// Gets an open file in the workspace.  If the file isn't open but
-        /// exists on the filesystem, load and return it.
+        /// exists on the filesystem, load and return it. Virtual method to
+        /// allow for mocking
         /// </summary>
         /// <param name="filePath">The file path at which the script resides.</param>
         /// <exception cref="FileNotFoundException">
@@ -59,7 +60,7 @@ namespace Microsoft.SqlTools.ServiceLayer.Workspace
         /// <exception cref="ArgumentException">
         /// <paramref name="filePath"/> contains a null or empty string.
         /// </exception>
-        public ScriptFile GetFile(string filePath)
+        public virtual ScriptFile GetFile(string filePath)
         {
             Validate.IsNotNullOrWhitespaceString("filePath", filePath);
 

src/Microsoft.SqlTools.ServiceLayer/Workspace/WorkspaceService.cs

@@ -28,7 +28,7 @@ namespace Microsoft.SqlTools.ServiceLayer.Workspace
 
         #region Singleton Instance Implementation
 
-        private static readonly Lazy<WorkspaceService<TConfig>> instance = new Lazy<WorkspaceService<TConfig>>(() => new WorkspaceService<TConfig>());
+        private static Lazy<WorkspaceService<TConfig>> instance = new Lazy<WorkspaceService<TConfig>>(() => new WorkspaceService<TConfig>());
 
         public static WorkspaceService<TConfig> Instance
         {
@@ -52,8 +52,14 @@ namespace Microsoft.SqlTools.ServiceLayer.Workspace
 
         #region Properties
 
-        public Workspace Workspace { get; private set; }
+        /// <summary>
+        /// Workspace object for the service. Virtual to allow for mocking
+        /// </summary>
+        public virtual Workspace Workspace { get; private set; }
 
+        /// <summary>
+        /// Current settings for the workspace
+        /// </summary>
         public TConfig CurrentSettings { get; internal set; }
 
         /// <summary>