Succeeding with Agile

The Remaining Role of User Interface Tests

But don’t we need to do some user interface testing? Absolutely, but far less of it than any other test type. In our calculator example, we no longer need to run all multiplication tests through the user interface. Instead, we run the majority of tests (such as boundary tests) through the service layer, invoking the multiply and divide methods (services) directly to confirm that the math is working properly. At the user interface level what’s left is testing to confirm that the services are hooked up to the right buttons and that the values are displaying properly in the result field. To do this we need a much smaller set of tests to run through the user interface layer.

Where many organizations have ...