The test description says "at least five types of fruit", but the test itself is checking for exactly five types of fruit, which was a bit misleading for newcomers like me :)
A simple change from "==" to ">=" should do the trick and successfully check for the "at least" condition.
The previous test would stop comparing elements in array a and vec v upon reaching the last element of either. This resulted in the test passing even if v did not contain all the elements in a. This change to the test fixes that bug and should only pass if all the elements in a and v are present and equal.