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© 2003 John D. McGregor
Unit tests –
functional tests
Based on the public interface
of the unit
public int largest(int a, int b, int c)
Test
cases sample from the “domain” of the input
Possible inputs are divided
into equivalence classes
a b c correct answer
1 3 5 5
1 5 3 5
5 1 3 5
5 3 1 5