content: package com.alibaba.json.bvt.parser.autoType;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.parser.Feature;
  import com.alibaba.fastjson.parser.ParserConfig;
  import junit.framework.TestCase;
  import org.springframework.cache.support.NullValue;
  
  public class AutoTypeTest7 extends TestCase {
      public void test_0() throws Exception {
          JSON.parseObject("{\"@type\":\"java.util.Collections$UnmodifiableMap\"}");
      }
  
      public void test_1() throws Exception {
          JSON.parseObject("{\"@type\":\"java.util.Collections$UnmodifiableMap\",\"id\":123}");
      }
  //
  //    public void test_2() throws Exception {
  //        NullValue value = (NullValue) JSON.parseObject("{\"@type\":\"org.springframework.cache.support.NullValue\"}", Object.class, Feature.SupportAutoType);
  //        assertNotNull(value);
  //    }
  
      public void test_3() throws Exception {
          ParserConfig config = new ParserConfig();
          config.addAccept("org.springframework.dao.CannotAcquireLockException");
          Exception ex = (Exception) JSON.parseObject("{\"@type\":\"org.springframework.dao.CannotAcquireLockException\",\"message\":\"xxx\"}", Object.class, config, Feature.SupportAutoType);
          assertEquals("xxx", ex.getMessage());
      }
  
  }
  