public void AddFiles_Test()
        {
            TestProject testProject = new TestProject();

            projectTreeModel.TestProject = testProject;
            string        fileName = Assembly.GetExecutingAssembly().Location;
            List <string> list     = new List <string>(new[] { fileName });

            fileSystem.Stub(fs => fs.FileExists(fileName)).Return(true);
            var progressMonitor = MockProgressMonitor.Instance;

            Assert.Count(0, projectController.TestPackage.Files);

            projectController.AddFiles(progressMonitor, list);

            Assert.Count(1, projectController.TestPackage.Files);
            Assert.AreEqual(fileName, projectController.TestPackage.Files[0].ToString());
        }