### Question:
ConfigurationValue { public String toString() { return "ConfigurationValue{" + "tag='" + tag + '\'' + ", value='" + value + '\'' + '}'; } ConfigurationValue(CValue value, String tag);  ConfigurationValue(CValue value); CValue value(); String tag(); String toString(); static final String DEFAULT_TAG; static final String ALL_TAG; }### Answer:
@Test public void testToString() throws Exception { final String stringDescription = new ConfigurationValue(null, null).toString(); assertEquals(3, stringDescription.split("null").length); }