From 78dcfe10d8ecf5c1580bd6f37d957ad127bc6d2a Mon Sep 17 00:00:00 2001
From: Johannes Rieken <johannes.rieken@gmail.com>
Date: Wed, 6 Apr 2016 17:42:59 +0200
Subject: [PATCH] make sure that the falsy value for the activeTextEditor is
 `undefined`, #5022

---
 extensions/vscode-api-tests/src/window.test.ts | 13 +++++++++----
 src/vs/workbench/api/node/extHostEditors.ts    |  2 +-
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/extensions/vscode-api-tests/src/window.test.ts b/extensions/vscode-api-tests/src/window.test.ts
index 13a18b0eece..c52ed3333eb 100644
--- a/extensions/vscode-api-tests/src/window.test.ts
+++ b/extensions/vscode-api-tests/src/window.test.ts
@@ -6,11 +6,11 @@
 'use strict';
 
 import * as assert from 'assert';
-import {workspace, window, commands, ViewColumn, TextEditor, TextEditorViewColumnChangeEvent, Uri} from 'vscode';
+import {workspace, window, ViewColumn, TextEditorViewColumnChangeEvent, Uri} from 'vscode';
 import {join} from 'path';
 import {cleanUp, pathEquals} from './utils';
 
-suite("window namespace tests", () => {
+suite('window namespace tests', () => {
 
 	teardown(cleanUp);
 
@@ -24,6 +24,11 @@ suite("window namespace tests", () => {
 		});
 	});
 
+	test('editor, UN-active text editor', () => {
+		assert.equal(window.visibleTextEditors.length, 0);
+		assert.ok(window.activeTextEditor === undefined);
+	});
+
 	test('editor, assign and check view columns', () => {
 
 		return workspace.openTextDocument(join(workspace.rootPath, './far.js')).then(doc => {
@@ -48,7 +53,7 @@ suite("window namespace tests", () => {
 			provideTextDocumentContent() {
 				return 'mountainbiking,roadcycling';
 			}
-		})
+		});
 
 		return Promise.all([
 			workspace.openTextDocument(Uri.parse('bikes://testing/one')).then(doc => window.showTextDocument(doc, ViewColumn.One)),
@@ -74,7 +79,7 @@ suite("window namespace tests", () => {
 				assert.ok(actualEvent.viewColumn === two.viewColumn);
 
 				registration1.dispose();
-			})
+			});
 		});
 	});
 });
\ No newline at end of file
diff --git a/src/vs/workbench/api/node/extHostEditors.ts b/src/vs/workbench/api/node/extHostEditors.ts
index ac5b598606d..19a4ede1dc7 100644
--- a/src/vs/workbench/api/node/extHostEditors.ts
+++ b/src/vs/workbench/api/node/extHostEditors.ts
@@ -77,7 +77,7 @@ export class ExtHostEditors {
 	}
 
 	getActiveTextEditor(): vscode.TextEditor {
-		return this._activeEditorId && this._editors[this._activeEditorId];
+		return this._editors[this._activeEditorId];
 	}
 
 	getVisibleTextEditors(): vscode.TextEditor[] {