How to compare two Streams in Java 8

Question

What would be a good way to compare two Stream instances in Java 8 and find out whether they have the same elements, specifically for purposes of unit testing?<

Answer 1

static void assertStreamEquals(Stream s1, Stream s2)
{
    Iterator iter1 = s1.iterator(), iter2 = s2.iterator();
    while(iter1.hasNext() && iter2.hasNext())
        assertEquals(iter1.next(), iter2.next());
    assert !iter1.hasNext() && !iter2.hasNext();
}