Create remote file browser service (#448)

* code refactoring

* Add filebrowser service and tests

* change dataset reference

* Address pr comments

* add more tests

* address pr comments

* address pr comments and added more tests

* minor change

* minor fix

* Fix test break and add dataset result check

test/Microsoft.SqlTools.ServiceLayer.UnitTests/DisasterRecovery/BackupTests.cs

@@ -22,7 +22,6 @@ namespace Microsoft.SqlTools.ServiceLayer.UnitTests.DisasterRecovery
         {
             using (SqlTaskManager manager = new SqlTaskManager())
             {
-                DisasterRecoveryService service = new DisasterRecoveryService();
                 var mockBackupOperation = new Mock<IBackupOperation>();
                 TaskMetadata taskMetaData = this.CreateTaskMetaData(mockBackupOperation.Object);
                 SqlTask sqlTask = manager.CreateTask<SqlTask>(taskMetaData);
@@ -45,7 +44,6 @@ namespace Microsoft.SqlTools.ServiceLayer.UnitTests.DisasterRecovery
         {
             using (SqlTaskManager manager = new SqlTaskManager())
             {
-                DisasterRecoveryService service = new DisasterRecoveryService();
                 var mockBackupOperation = new Mock<IBackupOperation>();
                 TaskMetadata taskMetaData = this.CreateTaskMetaData(mockBackupOperation.Object);
                 taskMetaData.TaskExecutionMode = TaskExecutionMode.Script;
@@ -69,8 +67,7 @@ namespace Microsoft.SqlTools.ServiceLayer.UnitTests.DisasterRecovery
         public async Task VerifyRunningMultipleBackupTasks()
         {
             using (SqlTaskManager manager = new SqlTaskManager())
-            {   
-                DisasterRecoveryService service = new DisasterRecoveryService();
+            {
                 var mockBackupOperation = new Mock<IBackupOperation>();
                 TaskMetadata taskMetaData = this.CreateTaskMetaData(mockBackupOperation.Object);
 
@@ -103,7 +100,6 @@ namespace Microsoft.SqlTools.ServiceLayer.UnitTests.DisasterRecovery
             using (SqlTaskManager manager = new SqlTaskManager())
             {
                 IBackupOperation backupOperation = new BackupOperationStub();
-                DisasterRecoveryService service = new DisasterRecoveryService();
                 TaskMetadata taskMetaData = this.CreateTaskMetaData(backupOperation);
                 SqlTask sqlTask = manager.CreateTask<SqlTask>(taskMetaData);
                 Assert.NotNull(sqlTask);
@@ -129,7 +125,6 @@ namespace Microsoft.SqlTools.ServiceLayer.UnitTests.DisasterRecovery
         {
             using (SqlTaskManager manager = new SqlTaskManager())
             {
-                DisasterRecoveryService service = new DisasterRecoveryService();
                 IBackupOperation backupOperation = new BackupOperationStub();
                 IBackupOperation backupOperation2 = new BackupOperationStub();
                 TaskMetadata taskMetaData = this.CreateTaskMetaData(backupOperation);
@@ -171,7 +166,6 @@ namespace Microsoft.SqlTools.ServiceLayer.UnitTests.DisasterRecovery
         {
             using (SqlTaskManager manager = new SqlTaskManager())
             {
-                DisasterRecoveryService service = new DisasterRecoveryService();
                 IBackupOperation backupOperation = new BackupOperationStub();
                 TaskMetadata taskMetaData = this.CreateTaskMetaData(backupOperation);
                 SqlTask sqlTask = manager.CreateTask<SqlTask>(taskMetaData);

test/Microsoft.SqlTools.ServiceLayer.UnitTests/DisasterRecovery/DisasterRecoveryFileValidatorUnitTests.cs

@@ -0,0 +1,39 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using Microsoft.SqlTools.ServiceLayer.DisasterRecovery;
+using Xunit;
+
+namespace Microsoft.SqlTools.ServiceLayer.UnitTests.DisasterRecovery
+{
+    /// <summary>
+    /// Unit tests for disaster recovery file validator
+    /// </summary>
+    public class DisasterRecoveryFileValidatorUnitTests
+    {
+        [Fact]
+        public void ValidatorShouldReturnFalseForNullArgument()
+        {
+            string message;
+            bool result = DisasterRecoveryFileValidator.ValidatePaths(null, out message);
+            Assert.False(result);
+        }
+
+        [Fact]
+        public void GetMachineNameForLocalServer()
+        {
+            string machineName = DisasterRecoveryFileValidator.GetMachineName(DisasterRecoveryFileValidator.LocalSqlServer);
+            Assert.True(System.Environment.MachineName == machineName);
+        }
+
+        [Fact]
+        public void GetMachineNameForNamedServer()
+        {
+            string testMachineName = "testmachine";
+            string machineName = DisasterRecoveryFileValidator.GetMachineName(string.Format("{0}\\testserver", testMachineName));
+            Assert.True(testMachineName == machineName);
+        }
+    }
+}

test/Microsoft.SqlTools.ServiceLayer.UnitTests/FileBrowser/FileBrowserTests.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;
+using Microsoft.SqlTools.ServiceLayer.FileBrowser;
+using Microsoft.SqlTools.ServiceLayer.FileBrowser.Contracts;
+using Xunit;
+
+namespace Microsoft.SqlTools.ServiceLayer.UnitTests.FileBrowser
+{
+    /// <summary>
+    /// File browser unit tests
+    /// </summary>
+    public class FileBrowserTests
+    {
+        [Fact]
+        public void CreateFileBrowserOperationTest()
+        {
+            FileBrowserOperation operation = new FileBrowserOperation(null, "", null);
+            Assert.True(operation.FileTree != null);
+
+            // It should set "*" filter as default
+            Assert.True(operation.FileFilters.Length == 1);
+        }
+
+        [Fact]
+        public void FilterFilesTest()
+        {
+            FileBrowserOperation operation = new FileBrowserOperation();
+            string[] supportedFilePaths = new string[] {"te\\s/t1.txt", "te!s.t2.bak" };
+            string[] unsupportedFilePaths = new string[] { "te.s*/t3.jpg", "t_est4.trn" };
+            string[] filters = new string[] { "*.txt", "*.bak"};
+
+            foreach (string path in supportedFilePaths)
+            {
+                Assert.True(operation.FilterFile(path, filters));
+            }
+
+            foreach (string path in unsupportedFilePaths)
+            {
+                Assert.False(operation.FilterFile(path, filters));
+            }
+        }
+
+        [Fact]
+        public void ExpandNodeShouldThrowExceptionForInvalidPath()
+        {
+            FileBrowserOperation operation = new FileBrowserOperation();
+            Exception exception = null;
+
+            try
+            {
+                operation.PathSeparator = '/';
+                operation.ExpandSelectedNode("testdrive/filebrowser/test");
+            }
+            catch (FileBrowserException ex)
+            {
+                exception = ex;
+            }
+
+            Assert.NotNull(exception);
+            Assert.Null(operation.FileTree.SelectedNode);
+        }
+
+        [Fact]
+        public void CreateFileTreeTest()
+        {
+            FileTree tree = new FileTree();
+            Assert.NotNull(tree.RootNode);
+            Assert.Null(tree.SelectedNode);
+        }
+
+        [Fact]
+        public void AddFileTreeNodeChildTest()
+        {
+            FileTreeNode node1 = new FileTreeNode();
+            FileTreeNode node2 = new FileTreeNode();
+            node1.AddChildNode(node2);
+            Assert.NotNull(node1.Children);
+        }
+    }
+}