public void SetDirectoryTest() {
            string dir = "c:\\";
            string actual;
            using (new VsRHostScript()) {
                var cmd = new WorkingDirectoryCommand(_interactiveWorkflow);
                cmd.InitializationTask.Wait();
                cmd.SetDirectory(dir).Wait();
                actual = cmd.GetRWorkingDirectoryAsync().Result;
            }

            actual.Should().Be(dir);
        }
        public void DefaultDirectoryTest() {
            string myDocs = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
            string actual;
            using (new VsRHostScript()) {
                var cmd = new WorkingDirectoryCommand(_interactiveWorkflow);
                cmd.InitializationTask.Wait();
                cmd.UserDirectory.Should().BeEquivalentTo(myDocs);
                actual = cmd.GetRWorkingDirectoryAsync().Result;
            };

            actual.Should().Be(myDocs);
        }