private static void test(Node f, Trees.TraversalOrder traversalOrder, String expectedResult) {
        final String result = Trees.traverse(f, Node::stream, traversalOrder).map(Node::getName).collect(JOINING_COMAS);
        //System.out.printf("%-20s: %s\n", traversalOrder, result);
        assertEquals(expectedResult, result);
    }
Test of traverse method, of class Trees.
runtime-parent/runtime-config/src/test/java/com/speedment/runtime/config/util/TreesTest.java