import * as assert from 'assert'; // You can import and use all API from the 'vscode' module // as well as import your extension to test it import * as vscode from 'vscode'; // import * as myExtension from '../../extension'; suite('Extension Test Suite', () => { vscode.window.showInformationMessage('Start all tests.'); test('Sample test', () => { assert.strictEqual([1, 2, 3].indexOf(5), -1); assert.strictEqual([1, 2, 3].indexOf(0), -1); }); });