public void testSetterViaMapNotation() {

    TestClass tc = new TestClass();
    tc.getExtra().put("test", "value");

    ParserContext ctx = new ParserContext();
    ctx.withInput("this", TestClass.class);
    ctx.setStrongTyping(true);
    String expression = "extra[\"test\"]";
    Serializable compiled = MVEL.compileSetExpression(expression, tc.getClass(), ctx);
    MVEL.executeSetExpression(compiled, tc, "value3");
    assertEquals("value3", tc.getExtra().get("test"));
  }