Add expand all tests

Author: linquize

src/AddIns/Analysis/UnitTesting/Commands/PadCommands.cs

@@ -54,6 +54,21 @@ public override void Run()
 		}
 	}
 
+	public class ExpandAllTestsCommand : AbstractMenuCommand
+	{
+		public override void Run()
+		{
+			if (!(this.Owner is SharpTreeView))
+				return;
+			
+			var treeView = (SharpTreeView)this.Owner;
+			if (treeView.Root != null) {
+				foreach (var n in treeView.Root.Descendants())
+					n.IsExpanded = true;
+			}
+		}
+	}
+	
 	public class CollapseAllTestsCommand : AbstractMenuCommand
 	{
 		public override void Run()

src/AddIns/Analysis/UnitTesting/UnitTesting.addin

@@ -100,6 +100,10 @@
 			             tooltip="${res:NUnitPad.NUnitPadContent.ReferenceItem}"
 			             class="ICSharpCode.UnitTesting.AddNUnitReferenceCommand"/>
 			<ToolbarItem id = "CollapseSeparator" type = "Separator"/>
+			<ToolbarItem id      = "ExpandAll"
+		             icon        = "Icons.16x16.OpenCollection"
+		             tooltip     = "${res:MainWindow.Windows.SearchResultPanel.ExpandAll.ToolTip}"
+		             class       = "ICSharpCode.UnitTesting.ExpandAllTestsCommand"/>
 			<ToolbarItem id      = "Collapse"
 			             icon    = "Icons.16x16.Collection"
 			             tooltip = "${res:MainWindow.Windows.SearchResultPanel.CollapseAll.ToolTip}"