@Test
public void testInsertData() {
    
    //create a valid stock symbol and insert test data. 
    String symbol = "testsymbol";
    Map<String,String> obj = persistence.createSymbol(symbol);
    obj.put("somefield", "somedata");
    persistence.saveSymbol(symbol);
    
    //Now query it and see check that data
    Map<String,String> anotherobj = persistence.readSymbol(symbol);
    assertNotNull("Insert Data", anotherobj);
    assertTrue("Insert Data", anotherobj.containsKey("somefield"));
    assertEquals("Insert Data", "somedata", anotherobj.get("somefield"));
    
    
}