diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index f37c8bc6975..87f0d7c5e3d 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -572,4 +572,70 @@ declare module 'vscode' {
 		 */
 		export function createWebview(title: string, column: ViewColumn, options: WebviewOptions): Webview;
 	}
+
+	export namespace window {
+
+		/**
+		 * Register a [TreeDataProvider](#TreeDataProvider) for the view contributed using the extension point `views`.
+		 * @param viewId Id of the view contributed using the extension point `views`.
+		 * @param treeDataProvider A [TreeDataProvider](#TreeDataProvider) that provides tree data for the view
+		 * @return handle to the [treeview](#TreeView) that can be disposable.
+		 */
+		export function registerTreeDataProvider<T>(viewId: string, treeDataProvider: TreeDataProvider<T>): TreeView<T>;
+
+	}
+
+	/**
+	 * Represents a Tree view
+	 */
+	export interface TreeView<T> extends Disposable {
+
+		/**
+		 * Reveal an element. By default revealed element is selected.
+		 *
+		 * In order to not to select, set the option `donotSelect` to `true`.
+		 *
+		 * **NOTE:** [TreeDataProvider](#TreeDataProvider) is required to implement [getParent](#TreeDataProvider.getParent) method to access this API.
+		 */
+		reveal(element: T, options?: { donotSelect?: boolean }): Thenable<void>;
+	}
+
+	/**
+	 * A data provider that provides tree data
+	 */
+	export interface TreeDataProvider<T> {
+		/**
+		 * An optional event to signal that an element or root has changed.
+		 * This will trigger the view to update the changed element/root and its children recursively (if shown).
+		 * To signal that root has changed, do not pass any argument or pass `undefined` or `null`.
+		 */
+		onDidChangeTreeData?: Event<T | undefined | null>;
+
+		/**
+		 * Get [TreeItem](#TreeItem) representation of the `element`
+		 *
+		 * @param element The element for which [TreeItem](#TreeItem) representation is asked for.
+		 * @return [TreeItem](#TreeItem) representation of the element
+		 */
+		getTreeItem(element: T): TreeItem | Thenable<TreeItem>;
+
+		/**
+		 * Get the children of `element` or root if no element is passed.
+		 *
+		 * @param element The element from which the provider gets children. Can be `undefined`.
+		 * @return Children of `element` or root if no element is passed.
+		 */
+		getChildren(element?: T): ProviderResult<T[]>;
+
+		/**
+		 * Optional method to return the parent of `element`.
+		 * Return `null` or `undefined` if `element` is a child of root.
+		 *
+		 * **NOTE:** This method should be implemented in order to access [reveal](#TreeView.reveal) API.
+		 *
+		 * @param element The element for which the parent has to be returned.
+		 * @return Parent of `element`.
+		 */
+		getParent?(element: T): ProviderResult<T>;
+	}
 }
diff --git a/src/vs/workbench/api/electron-browser/mainThreadTreeViews.ts b/src/vs/workbench/api/electron-browser/mainThreadTreeViews.ts
index 0b19a1ecd1b..d67cd8c3c7e 100644
--- a/src/vs/workbench/api/electron-browser/mainThreadTreeViews.ts
+++ b/src/vs/workbench/api/electron-browser/mainThreadTreeViews.ts
@@ -34,6 +34,14 @@ export class MainThreadTreeViews extends Disposable implements MainThreadTreeVie
 		this.viewsService.getTreeViewer(treeViewId).dataProvider = dataProvider;
 	}
 
+	$reveal(treeViewId: string, item: ITreeItem, parentChain: ITreeItem[], options: { donotSelect?: boolean } = { donotSelect: false }): TPromise<void> {
+		return this.viewsService.openView(treeViewId)
+			.then(() => {
+				const viewer = this.viewsService.getTreeViewer(treeViewId);
+				return viewer ? viewer.reveal(item, parentChain, options) : null;
+			});
+	}
+
 	$refresh(treeViewId: string, itemsToRefresh: { [treeItemHandle: string]: ITreeItem }): void {
 		const dataProvider = this._dataProviders.get(treeViewId);
 		if (dataProvider) {
diff --git a/src/vs/workbench/api/node/extHost.api.impl.ts b/src/vs/workbench/api/node/extHost.api.impl.ts
index a3c9b6685bc..7bfaa74be53 100644
--- a/src/vs/workbench/api/node/extHost.api.impl.ts
+++ b/src/vs/workbench/api/node/extHost.api.impl.ts
@@ -392,8 +392,8 @@ export function createApiFactory(
 				}
 				return extHostTerminalService.createTerminal(<string>nameOrOptions, shellPath, shellArgs);
 			},
-			registerTreeDataProvider(viewId: string, treeDataProvider: vscode.TreeDataProvider<any>): vscode.Disposable {
-				return extHostTreeViews.registerTreeDataProvider(viewId, treeDataProvider);
+			registerTreeDataProvider(viewId: string, treeDataProvider: vscode.TreeDataProvider<any>): vscode.TreeView<any> {
+				return extHostTreeViews.registerTreeDataProvider(viewId, treeDataProvider, (fn) => proposedApiFunction(extension, fn));
 			},
 			// proposed API
 			sampleFunction: proposedApiFunction(extension, () => {
diff --git a/src/vs/workbench/api/node/extHost.protocol.ts b/src/vs/workbench/api/node/extHost.protocol.ts
index aa12dcb7b62..95e302f4c60 100644
--- a/src/vs/workbench/api/node/extHost.protocol.ts
+++ b/src/vs/workbench/api/node/extHost.protocol.ts
@@ -216,6 +216,7 @@ export interface MainThreadTextEditorsShape extends IDisposable {
 export interface MainThreadTreeViewsShape extends IDisposable {
 	$registerTreeViewDataProvider(treeViewId: string): void;
 	$refresh(treeViewId: string, itemsToRefresh?: { [treeItemHandle: string]: ITreeItem }): void;
+	$reveal(treeViewId: string, treeItem: ITreeItem, parentChain: ITreeItem[], options?: { donotSelect?: boolean }): TPromise<void>;
 }
 
 export interface MainThreadErrorsShape extends IDisposable {
diff --git a/src/vs/workbench/api/node/extHostTreeViews.ts b/src/vs/workbench/api/node/extHostTreeViews.ts
index 52592bc2b2a..6a8c297ddfe 100644
--- a/src/vs/workbench/api/node/extHostTreeViews.ts
+++ b/src/vs/workbench/api/node/extHostTreeViews.ts
@@ -38,9 +38,12 @@ export class ExtHostTreeViews implements ExtHostTreeViewsShape {
 		});
 	}
 
-	registerTreeDataProvider<T>(id: string, dataProvider: vscode.TreeDataProvider<T>): vscode.Disposable {
+	registerTreeDataProvider<T>(id: string, dataProvider: vscode.TreeDataProvider<T>, proposedApiFunction: <U>(fn: U) => U): vscode.TreeView<T> {
 		const treeView = this.createExtHostTreeViewer(id, dataProvider);
 		return {
+			reveal: proposedApiFunction((element: T, options?: { donotSelect?: boolean }): Thenable<void> => {
+				return treeView.reveal(element, options);
+			}),
 			dispose: () => {
 				this.treeViews.delete(id);
 				treeView.dispose();
@@ -107,6 +110,54 @@ class ExtHostTreeView<T> extends Disposable {
 		return this.elements.get(treeItemHandle);
 	}
 
+	reveal(element: T, options?: { donotSelect?: boolean }): TPromise<void> {
+		if (typeof this.dataProvider.getParent !== 'function') {
+			return TPromise.wrapError(new Error(`Required registered TreeDataProvider to implement 'getParent' method to access 'reveal' mehtod`));
+		}
+		return this.resolveUnknownParentChain(element)
+			.then(parentChain => this.resolveTreeItem(element, parentChain[parentChain.length - 1])
+				.then(treeNode => this.proxy.$reveal(this.viewId, treeNode.item, parentChain.map(p => p.item), options)));
+	}
+
+	private resolveUnknownParentChain(element: T): TPromise<TreeNode[]> {
+		return this.resolveParent(element)
+			.then((parent) => {
+				if (!parent) {
+					return TPromise.as([]);
+				}
+				return this.resolveUnknownParentChain(parent)
+					.then(result => this.resolveTreeItem(parent, result[result.length - 1])
+						.then(parentNode => {
+							result.push(parentNode);
+							return result;
+						}));
+			});
+	}
+
+	private resolveParent(element: T): TPromise<T> {
+		const node = this.nodes.get(element);
+		if (node) {
+			return TPromise.as(node.parent ? this.elements.get(node.parent.item.handle) : null);
+		}
+		return asWinJsPromise(() => this.dataProvider.getParent(element));
+	}
+
+	private resolveTreeItem(element: T, parent?: TreeNode): TPromise<TreeNode> {
+		return asWinJsPromise(() => this.dataProvider.getTreeItem(element))
+			.then(extTreeItem => this.createHandle(element, extTreeItem, parent))
+			.then(handle => this.getChildren(parent ? parent.item.handle : null)
+				.then(() => {
+					const cachedElement = this.getExtensionElement(handle);
+					if (cachedElement) {
+						const node = this.nodes.get(cachedElement);
+						if (node) {
+							return TPromise.as(node);
+						}
+					}
+					throw new Error(`Cannot resolve tree item for element ${handle}`);
+				}));
+	}
+
 	private getChildrenNodes(parentNodeOrHandle?: TreeNode | TreeItemHandle): TreeNode[] {
 		if (parentNodeOrHandle) {
 			let parentNode: TreeNode;
diff --git a/src/vs/workbench/browser/parts/views/customView.ts b/src/vs/workbench/browser/parts/views/customView.ts
index d9a75bd4ba5..9b4bd7b6e8b 100644
--- a/src/vs/workbench/browser/parts/views/customView.ts
+++ b/src/vs/workbench/browser/parts/views/customView.ts
@@ -13,7 +13,7 @@ import * as DOM from 'vs/base/browser/dom';
 import { $ } from 'vs/base/browser/builder';
 import { LIGHT } from 'vs/platform/theme/common/themeService';
 import { ITree, IDataSource, IRenderer, ContextMenuEvent } from 'vs/base/parts/tree/browser/tree';
-import { TreeItemCollapsibleState, ITreeItem, ITreeViewer, ICustomViewsService, ITreeViewDataProvider, ViewsRegistry, IViewDescriptor, TreeViewItemHandleArg, ICustomViewDescriptor } from 'vs/workbench/common/views';
+import { TreeItemCollapsibleState, ITreeItem, ITreeViewer, ICustomViewsService, ITreeViewDataProvider, ViewsRegistry, IViewDescriptor, TreeViewItemHandleArg, ICustomViewDescriptor, IViewsViewlet } from 'vs/workbench/common/views';
 import { IWorkbenchThemeService } from 'vs/workbench/services/themes/common/workbenchThemeService';
 import { IExtensionService } from 'vs/workbench/services/extensions/common/extensions';
 import { IProgressService2, ProgressLocation } from 'vs/platform/progress/common/progress';
@@ -32,6 +32,7 @@ import { fillInActions, ContextAwareMenuItemActionItem } from 'vs/platform/actio
 import { FileKind } from 'vs/platform/files/common/files';
 import { ICommandService } from 'vs/platform/commands/common/commands';
 import { FileIconThemableWorkbenchTree } from 'vs/workbench/browser/parts/views/viewsViewlet';
+import { IViewletService } from 'vs/workbench/services/viewlet/browser/viewlet';
 
 export class CustomViewsService extends Disposable implements ICustomViewsService {
 
@@ -40,7 +41,8 @@ export class CustomViewsService extends Disposable implements ICustomViewsServic
 	private viewers: Map<string, CustomTreeViewer> = new Map<string, CustomTreeViewer>();
 
 	constructor(
-		@IInstantiationService private instantiationService: IInstantiationService
+		@IInstantiationService private instantiationService: IInstantiationService,
+		@IViewletService private viewletService: IViewletService
 	) {
 		super();
 		this.createViewers(ViewsRegistry.getAllViews());
@@ -52,6 +54,19 @@ export class CustomViewsService extends Disposable implements ICustomViewsServic
 		return this.viewers.get(id);
 	}
 
+	openView(id: string, focus: boolean): TPromise<void> {
+		const viewDescriptor = ViewsRegistry.getView(id);
+		if (viewDescriptor) {
+			return this.viewletService.openViewlet(viewDescriptor.id)
+				.then((viewlet: IViewsViewlet) => {
+					if (viewlet && viewlet.openView) {
+						viewlet.openView(id, focus);
+					}
+				});
+		}
+		return TPromise.as(null);
+	}
+
 	private createViewers(viewDescriptors: IViewDescriptor[]): void {
 		for (const viewDescriptor of viewDescriptors) {
 			if ((<ICustomViewDescriptor>viewDescriptor).treeView) {
@@ -122,7 +137,7 @@ class CustomTreeViewer extends Disposable implements ITreeViewer {
 			this._dataProvider = new class implements ITreeViewDataProvider {
 				onDidChange = dataProvider.onDidChange;
 				onDispose = dataProvider.onDispose;
-				getChildren(node?: ITreeItem): TPromise<any[]> {
+				getChildren(node?: ITreeItem): TPromise<ITreeItem[]> {
 					if (node.children) {
 						return TPromise.as(node.children);
 					}
@@ -247,6 +262,24 @@ class CustomTreeViewer extends Disposable implements ITreeViewer {
 		return TPromise.as(null);
 	}
 
+	reveal(item: ITreeItem, parentChain: ITreeItem[], options?: { donotSelect?: boolean }): TPromise<void> {
+		if (this.tree && this.isVisible) {
+			options = options ? options : { donotSelect: false };
+			const select = !options.donotSelect;
+			var result = TPromise.as(null);
+			parentChain.forEach((e) => {
+				result = result.then(() => this.tree.expand(e));
+			});
+			return result.then(() => this.tree.reveal(item))
+				.then(() => {
+					if (select) {
+						this.tree.setSelection([item]);
+					}
+				});
+		}
+		return TPromise.as(null);
+	}
+
 	private activate() {
 		if (!this.activated) {
 			this.extensionService.activateByEvent(`onView:${this.id}`);
diff --git a/src/vs/workbench/browser/parts/views/viewsViewlet.ts b/src/vs/workbench/browser/parts/views/viewsViewlet.ts
index 20db0ad67aa..88874ea907b 100644
--- a/src/vs/workbench/browser/parts/views/viewsViewlet.ts
+++ b/src/vs/workbench/browser/parts/views/viewsViewlet.ts
@@ -260,14 +260,19 @@ export class ViewsViewlet extends PanelViewlet implements IViewsViewlet {
 			.then(() => void 0);
 	}
 
-	openView(id: string): void {
-		this.focus();
+	openView(id: string, focus?: boolean): TPromise<void> {
+		if (focus) {
+			this.focus();
+		}
 		const view = this.getView(id);
 		if (view) {
 			view.setExpanded(true);
-			view.focus();
+			if (focus) {
+				view.focus();
+			}
+			return TPromise.as(null);
 		} else {
-			this.toggleViewVisibility(id);
+			return this.toggleViewVisibility(id, focus);
 		}
 	}
 
@@ -294,19 +299,19 @@ export class ViewsViewlet extends PanelViewlet implements IViewsViewlet {
 		super.shutdown();
 	}
 
-	toggleViewVisibility(id: string): void {
+	toggleViewVisibility(id: string, focus?: boolean): TPromise<void> {
 		let viewState = this.viewsStates.get(id);
 		if (!viewState) {
-			return;
+			return TPromise.as(null);
 		}
 
 		viewState.isHidden = !!this.getView(id);
-		this.updateViews()
+		return this.updateViews()
 			.then(() => {
 				this._onDidChangeViewVisibilityState.fire(id);
 				if (!viewState.isHidden) {
-					this.openView(id);
-				} else {
+					this.openView(id, focus);
+				} else if (focus) {
 					this.focus();
 				}
 			});
diff --git a/src/vs/workbench/common/views.ts b/src/vs/workbench/common/views.ts
index 453e722abd9..f9269f651ce 100644
--- a/src/vs/workbench/common/views.ts
+++ b/src/vs/workbench/common/views.ts
@@ -16,9 +16,9 @@ import { IDisposable } from 'vs/base/common/lifecycle';
 
 export class ViewLocation {
 
-	static readonly Explorer = new ViewLocation('explorer');
-	static readonly Debug = new ViewLocation('debug');
-	static readonly Extensions = new ViewLocation('extensions');
+	static readonly Explorer = new ViewLocation('workbench.view.explorer');
+	static readonly Debug = new ViewLocation('workbench.view.debug');
+	static readonly Extensions = new ViewLocation('workbench.view.extensions');
 
 	constructor(private _id: string) {
 	}
@@ -29,8 +29,8 @@ export class ViewLocation {
 
 	static getContributedViewLocation(value: string): ViewLocation {
 		switch (value) {
-			case ViewLocation.Explorer.id: return ViewLocation.Explorer;
-			case ViewLocation.Debug.id: return ViewLocation.Debug;
+			case 'explorer': return ViewLocation.Explorer;
+			case 'debug': return ViewLocation.Debug;
 		}
 		return void 0;
 	}
@@ -150,7 +150,7 @@ export const ViewsRegistry: IViewsRegistry = new class implements IViewsRegistry
 
 export interface IViewsViewlet extends IViewlet {
 
-	openView(id: string): void;
+	openView(id: string, focus?: boolean): TPromise<void>;
 
 }
 
@@ -171,6 +171,8 @@ export interface ITreeViewer extends IDisposable {
 	show(container: HTMLElement);
 
 	getOptimalWidth(): number;
+
+	reveal(item: ITreeItem, parentChain: ITreeItem[], options: { donotSelect?: boolean }): TPromise<void>;
 }
 
 export interface ICustomViewDescriptor extends IViewDescriptor {
@@ -185,6 +187,8 @@ export interface ICustomViewsService {
 	_serviceBrand: any;
 
 	getTreeViewer(id: string): ITreeViewer;
+
+	openView(id: string, focus?: boolean): TPromise<void>;
 }
 
 export type TreeViewItemHandleArg = {
diff --git a/src/vs/workbench/parts/quickopen/browser/viewPickerHandler.ts b/src/vs/workbench/parts/quickopen/browser/viewPickerHandler.ts
index 7b41004a587..b0a5d7c8035 100644
--- a/src/vs/workbench/parts/quickopen/browser/viewPickerHandler.ts
+++ b/src/vs/workbench/parts/quickopen/browser/viewPickerHandler.ts
@@ -129,7 +129,7 @@ export class ViewPickerHandler extends QuickOpenHandler {
 			if (views.length) {
 				for (const view of views) {
 					if (this.contextKeyService.contextMatchesRules(view.when)) {
-						result.push(new ViewEntry(view.name, viewlet.name, () => this.viewletService.openViewlet(viewlet.id, true).done(viewlet => (<IViewsViewlet>viewlet).openView(view.id), errors.onUnexpectedError)));
+						result.push(new ViewEntry(view.name, viewlet.name, () => this.viewletService.openViewlet(viewlet.id, true).done(viewlet => (<IViewsViewlet>viewlet).openView(view.id, true), errors.onUnexpectedError)));
 					}
 				}
 			}
diff --git a/src/vs/workbench/test/electron-browser/api/extHostTreeViews.test.ts b/src/vs/workbench/test/electron-browser/api/extHostTreeViews.test.ts
index 1362dfc2782..2342c3dab8c 100644
--- a/src/vs/workbench/test/electron-browser/api/extHostTreeViews.test.ts
+++ b/src/vs/workbench/test/electron-browser/api/extHostTreeViews.test.ts
@@ -6,6 +6,7 @@
 'use strict';
 
 import * as assert from 'assert';
+import * as sinon from 'sinon';
 import { Emitter } from 'vs/base/common/event';
 import { ExtHostTreeViews } from 'vs/workbench/api/node/extHostTreeViews';
 import { ExtHostCommands } from 'vs/workbench/api/node/extHostCommands';
@@ -33,6 +34,11 @@ suite('ExtHostTreeView', function () {
 		$refresh(viewId: string, itemsToRefresh?: { [treeItemHandle: string]: ITreeItem }): void {
 			this.onRefresh.fire(itemsToRefresh);
 		}
+
+		$reveal(): TPromise<void> {
+			return null;
+		}
+
 	}
 
 	let testObject: ExtHostTreeViews;
@@ -69,8 +75,8 @@ suite('ExtHostTreeView', function () {
 		testObject = new ExtHostTreeViews(target, new ExtHostCommands(rpcProtocol, new ExtHostHeapService(), new NullLogService()));
 		onDidChangeTreeNode = new Emitter<{ key: string }>();
 		onDidChangeTreeNodeWithId = new Emitter<{ key: string }>();
-		testObject.registerTreeDataProvider('testNodeTreeProvider', aNodeTreeDataProvider());
-		testObject.registerTreeDataProvider('testNodeWithIdTreeProvider', aNodeWithIdTreeDataProvider());
+		testObject.registerTreeDataProvider('testNodeTreeProvider', aNodeTreeDataProvider(), (fn) => fn);
+		testObject.registerTreeDataProvider('testNodeWithIdTreeProvider', aNodeWithIdTreeDataProvider(), (fn) => fn);
 
 		testObject.$getChildren('testNodeTreeProvider').then(elements => {
 			for (const element of elements) {
@@ -398,6 +404,61 @@ suite('ExtHostTreeView', function () {
 			});
 	});
 
+	test('reveal will throw an error if getParent is not implemented', () => {
+		const treeView = testObject.registerTreeDataProvider('treeDataProvider', aNodeTreeDataProvider(), (fn) => fn);
+		return treeView.reveal({ key: 'a' })
+			.then(() => assert.fail('Reveal should throw an error as getParent is not implemented'), () => null);
+	});
+
+	test('reveal will return empty array for root element', () => {
+		const revealTarget = sinon.spy(target, '$reveal');
+		const treeView = testObject.registerTreeDataProvider('treeDataProvider', aCompleteNodeTreeDataProvider(), (fn) => fn);
+		return treeView.reveal({ key: 'a' })
+			.then(() => {
+				assert.ok(revealTarget.calledOnce);
+				assert.deepEqual('treeDataProvider', revealTarget.args[0][0]);
+				assert.deepEqual({ handle: '0/0:a', label: 'a', collapsibleState: TreeItemCollapsibleState.Collapsed }, removeUnsetKeys(revealTarget.args[0][1]));
+				assert.deepEqual([], revealTarget.args[0][2]);
+				assert.equal(void 0, revealTarget.args[0][3]);
+			});
+	});
+
+	test('reveal will return parents array for an element', () => {
+		const revealTarget = sinon.spy(target, '$reveal');
+		const treeView = testObject.registerTreeDataProvider('treeDataProvider', aCompleteNodeTreeDataProvider(), (fn) => fn);
+		return treeView.reveal({ key: 'aa' })
+			.then(() => {
+				assert.ok(revealTarget.calledOnce);
+				assert.deepEqual('treeDataProvider', revealTarget.args[0][0]);
+				assert.deepEqual({ handle: '0/0:a/0:aa', label: 'aa', collapsibleState: TreeItemCollapsibleState.None, parentHandle: '0/0:a' }, removeUnsetKeys(revealTarget.args[0][1]));
+				assert.deepEqual([{ handle: '0/0:a', label: 'a', collapsibleState: TreeItemCollapsibleState.Collapsed }], (<Array<any>>revealTarget.args[0][2]).map(arg => removeUnsetKeys(arg)));
+				assert.equal(void 0, revealTarget.args[0][3]);
+			});
+	});
+
+	test('reveal will return parents array for deeper element with no selection', () => {
+		tree = {
+			'b': {
+				'ba': {
+					'bac': {}
+				}
+			}
+		};
+		const revealTarget = sinon.spy(target, '$reveal');
+		const treeView = testObject.registerTreeDataProvider('treeDataProvider', aCompleteNodeTreeDataProvider(), (fn) => fn);
+		return treeView.reveal({ key: 'bac' }, { donotSelect: true })
+			.then(() => {
+				assert.ok(revealTarget.calledOnce);
+				assert.deepEqual('treeDataProvider', revealTarget.args[0][0]);
+				assert.deepEqual({ handle: '0/0:b/0:ba/0:bac', label: 'bac', collapsibleState: TreeItemCollapsibleState.None, parentHandle: '0/0:b/0:ba' }, removeUnsetKeys(revealTarget.args[0][1]));
+				assert.deepEqual([
+					{ handle: '0/0:b', label: 'b', collapsibleState: TreeItemCollapsibleState.Collapsed },
+					{ handle: '0/0:b/0:ba', label: 'ba', collapsibleState: TreeItemCollapsibleState.Collapsed, parentHandle: '0/0:b' }
+				], (<Array<any>>revealTarget.args[0][2]).map(arg => removeUnsetKeys(arg)));
+				assert.deepEqual({ donotSelect: true }, revealTarget.args[0][3]);
+			});
+	});
+
 	function removeUnsetKeys(obj: any): any {
 		const result = {};
 		for (const key of Object.keys(obj)) {
@@ -420,6 +481,22 @@ suite('ExtHostTreeView', function () {
 		};
 	}
 
+	function aCompleteNodeTreeDataProvider(): TreeDataProvider<{ key: string }> {
+		return {
+			getChildren: (element: { key: string }): { key: string }[] => {
+				return getChildren(element ? element.key : undefined).map(key => getNode(key));
+			},
+			getTreeItem: (element: { key: string }): TreeItem => {
+				return getTreeItem(element.key);
+			},
+			getParent: ({ key }: { key: string }): { key: string } => {
+				const parentKey = key.substring(0, key.length - 1);
+				return parentKey ? new Key(parentKey) : void 0;
+			},
+			onDidChangeTreeData: onDidChangeTreeNode.event
+		};
+	}
+
 	function aNodeWithIdTreeDataProvider(): TreeDataProvider<{ key: string }> {
 		return {
 			getChildren: (element: { key: string }): { key: string }[] => {