public void Should_Set_AlwaysAuth_To_True()
            {
                // Given
                var settings = new NpmAddUserSettings();

                // When
                settings.AlwaysAuthenticate();

                // Then
                Assert.True(settings.AlwaysAuth);
            }
            public void Should_Throw_If_Settings_Are_Null()
            {
                // Given
                NpmAddUserSettings settings = null;

                // When
                var result = Record.Exception(() => settings.AlwaysAuthenticate());

                // Then
                result.IsArgumentNullException("settings");
            }