public void FileHelperProvidesNonEmptyPath()
        {
            var helper= new XmlSettingsFileHelper();
            var path = helper.Directory;

            Assert.IsFalse(string.IsNullOrEmpty(path));
        }
        public void SavingSettingsCreatesFileInProgramDirectory()
        {
            var helper = new XmlSettingsFileHelper();
            _settings.Add("number", 1);

            _writer.Write(_settings);

            var fileExists = File.Exists(helper.Directory + "Settings.xml");
            Assert.IsTrue(fileExists);
        }