Condition coverage

• Boolean expression

• Ensure all terms in the expression are exercised

        a if $x || $y;

• Four combinations of values for $x and $y

        $x   $y

         0    0
         0    1
         1    0
         1    1

• For 100% condition coverage all four must be taken

• Short circuiting operators

• Three combinations of values for $x and $y

        $x   $y

         0    0
         0    1
         1    x