Equivalence partitioning is a black box test design technique2. A black box technique is a technique that uses the external behaviour or specification of a system as a test basis to derive test cases without referring to its internal structure or logic2. Equivalence partitioning is a technique that divides the input domain of a system into partitions of equivalent data2. Each partition should contain data that is expected to be treated the same by the system2. Therefore, only one test case input from each partition is needed to test the system’s behaviour2. Therefore, equivalence partitioning is a black box test design technique.