@Test
    public void shouldEvalWithBindings() throws Exception {
        final GremlinGroovyScriptEngine engine = new GremlinGroovyScriptEngine();
        final Bindings b = new SimpleBindings();
        b.put("x", 2);
        assertEquals(3, engine.eval("1+x", b));
    }
@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-groovy/src/test/java/org/apache/tinkerpop/gremlin/groovy/jsr223/GremlinGroovyScriptEngineTest.java