Answer Posted / vipin
The simplest explanation of DDT is this: data that is
external to your functional test scripts is loaded and used
to extend your test cases. One of the best examples is that
of a customer order form. If you wished to populate the
entry fields with multiple test cases without DDT, you
would either need to record multiple test scripts (one for
each different test case) or employ DDT. To use DDT in this
scenario, you might record a single script, entering values
into the various fields. Then, you could alter the script
to accept variables, entering those variables into the data
fields. Now you can call this script each time you want to
add an order record, passing in a new set of data each
time.
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