The authors will show the reader how to take advantage of a design pattern called the Policy Pattern to make configuration of a UVM testbench easier for the user to modify. Using this pattern will allow test writers to quickly and easily modify the configuration of the DUT or testbench while also providing at-a- glance information about what configuration a test is using. This technique eliminates the need to know some testbench details: how the components of the testbench work; how components are built; and how to write complex constraint blocks This isolation also allows the testbench writers to modify how the internals of the testbench components are coded without disrupting tests or the test writers.

( Jeff McNeal , Kevin Vasconcellos )