@Test public void testProcess_from_var() { System.out.println("process fromvar"); JMeterContext context = JMeterContextService.getContext(); JMeterVariables vars = context.getVariables(); SampleResult res = new SampleResult(); res.setResponseData("".getBytes()); context.setPreviousResult(res); vars.put("SVAR", json); JSONPathExtractor instance = new JSONPathExtractor(); instance.setDefaultValue("DEFAULT"); instance.setVar("test"); instance.setJsonPath("$.store.book[*].author"); instance.setSubject(JSONPathExtractor.SUBJECT_VARIABLE); instance.setSrcVariableName("SVAR"); instance.process(); assertEquals( "[\"Nigel Rees\",\"Evelyn Waugh\",\"Herman Melville\",\"J. R. R. Tolkien\"]", vars.get("test")); }