splits = splitter.exec(testTuple);
assertEquals("whitespace trimmed if no length arg", 2, splits.size());
// test forcing null matches with length param
testTuple = Util.buildTuple("foo bar ", "\\s", 10);
splits = splitter.exec(testTuple);
assertEquals("length forces empty string matches on end", 5, splits.size());
// test limiting results with limit
testTuple = Util.buildTuple("foo:bar:baz", ":", 2);
splits = splitter.exec(testTuple);