public void testSetExpressions1() {
    Map<String, Object> myMap = new HashMap<String, Object>();

    final Serializable fooExpr = compileSetExpression("foo");
    executeSetExpression(fooExpr,
        myMap,
        "blah");
    assertEquals("blah",
        myMap.get("foo"));

    executeSetExpression(fooExpr,
        myMap,
        "baz");
    assertEquals("baz",
        myMap.get("foo"));

  }