### Question:
SugarConfig { public static void clearCache() { fields.clear(); fields = new HashMap<>(); }  static void setFields(Class<?> clazz, List<Field> fieldz); static List<Field> getFields(Class<?> clazz); static void clearCache();  }### Answer:
@Test public void testClearCache() { SugarConfig.clearCache(); Assert.assertEquals(true, SugarConfig.fields.isEmpty()); }