/**
* Returns an {@link Iterator} over a {@link Collection} of Throwable types which iterates over
* its elements in a consistent order (maintaining an ordering that is consistent across different
* runs makes it easier to compare sets generated by different implementations of the CFG
* classes).
*
* @param coll The collection to iterate over.
* @return An iterator which presents the elements of <code>coll</code> in order.
*/
private static Iterator sortedThrowableIterator(Collection coll) {
if (coll.size() <= 1) {
return coll.iterator();
} else {
Object array[] = coll.toArray();
Arrays.sort(array, new ThrowableComparator());
return Arrays.asList(array).iterator();
}
}
