Question

Okay, often I’ll have a method that returns a Set of some sort. The problem with unit testing such a method is that there is no guarantee an iteration over the set will always return the items in the same order.

Does anyone have any preferred method of validating a Set?

Peter

Answer 1

Just put your expected values in a Set and then use assertEquals on the expected and actual set. That works a charm, e.g.

Set<String> expected = new HashSet<String>(Arrays.asList("expected", "items"));
...
Set<String> actual = ...;
Assert.assertEquals(expected, actual);