Version

32.1.3-jre

Description

The internal class CartesianSet returned by Sets.cartesianProduct implements equals in a way that it is never equal to any other Set type because it calls super.equals which is actually Object.equals (and therefore checks for object identity).
That does not seem intended.

Example

Object o1 = ImmutableSet.of(ImmutableList.of(1, 2));
Object o2 = Sets.cartesianProduct(ImmutableList.of(
    ImmutableSet.of(1), ImmutableSet.of(2)
));

System.out.println("o1.equals(o2): " + o1.equals(o2));
System.out.println("o2.equals(o1): " + o2.equals(o1));