public void testPropertyTextRetriver() throws EvaluatorException {
Map<String,Object> props = new HashMap<String,Object>();
props.put("key1", "value1");
props.put("key2", "value2");
EvaluatorContext context = new EvaluatorContext(null, null);
context.setProperties(props);
PropertyTextRetriever txtRtvr = new PropertyTextRetriever("key1");
assertEquals(props.get("key1"), txtRtvr.getSourceText(context));
txtRtvr = new PropertyTextRetriever("key2");