jest.dontMock('../src/Virtualbox'); var virtualbox = require('../src/Virtualbox'); var util = require('../src/Util'); var Promise = require('bluebird'); describe('Virtualbox', function () { it('returns the right command', function () { expect(virtualbox.command()).toBe('/usr/bin/VBoxManage'); }); describe('version 4.3.20r96996', function () { pit('correctly parses virtualbox version', function () { util.exec.mockImplementation(function () { return Promise.resolve('4.3.20r96996'); }); return virtualbox.version().then(function (version) { expect(version).toBe('4.3.20'); }); }); }); });