ELEvaluator eval = Services.get().get(ELService.class).createEvaluator("workflow");
assertNotNull(eval.evaluate("${KB}", Long.class));
assertNotNull(eval.evaluate("${MB}", Long.class));
assertNotNull(eval.evaluate("${GB}", Long.class));
assertNotNull(eval.evaluate("${TB}", Long.class));
assertNotNull(eval.evaluate("${PB}", Long.class));
assertNotNull(eval.evaluate("${trim(' ')}", String.class));
assertNotNull(eval.evaluate("${concat('a', 'b')}", String.class));
assertNotNull(eval.evaluate("${firstNotNull(null, 'b')}", String.class));
assertNotNull(eval.evaluate("${timestamp()}", String.class));
assertNotNull(eval.evaluate("${urlEncode('abc')}", String.class));