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