@Test
    public void shouldTruncateLongName() {
        Step s = Mockito.mock(Step.class);
        Mockito.when(s.toString()).thenReturn("0123456789");
        assertEquals("0123...", TraversalHelper.getShortName(s, 7));
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/process/traversal/util/TraversalHelperTest.java