Metamorphic Testing Using Geometric Interrogation Technique and Its Application

Usual techniques used in the automatic test case
generation and executions assume that a complete oracle
will be available during the testing process. However,
in some numerical programs this assumption is
not valid because the oracle in form of analytical solution
is either not available or too difficult to obtain.
To overcome this problem, metamorphic testing proposes
to generate follow-up test cases to check important
properties of the output function. We study
the intrinsic properties of Medial Axes for casting applications. Even though Medial Axes is a geometric
function that is independent from the output function
of casting simulation, we propose to use its intrinsic
properties for metamorphic testing of casting simulation
to alleviate the oracle problem.