content: package com.alibaba.json.bvt.parser.deser;
  
  import java.util.regex.Pattern;
  
  import junit.framework.Assert;
  import junit.framework.TestCase;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.parser.DefaultExtJSONParser;
  import com.alibaba.fastjson.parser.JSONToken;
  import com.alibaba.fastjson.parser.ParserConfig;
  import com.alibaba.fastjson.parser.deserializer.PatternDeserializer;
  
  public class PatternDeserializerTest extends TestCase {
  
      public void test_pattern() throws Exception {
          Assert.assertEquals(Pattern.compile("abc").pattern(), JSON.parseObject("'abc'", Pattern.class).pattern());
  
          Assert.assertEquals(null, JSON.parseObject("null", Pattern.class));
  
          DefaultExtJSONParser parser = new DefaultExtJSONParser("null", ParserConfig.getGlobalInstance(), JSON.DEFAULT_PARSER_FEATURE);
          Assert.assertEquals(null, PatternDeserializer.instance.deserialze(parser, null, null));
          Assert.assertEquals(JSONToken.LITERAL_STRING, PatternDeserializer.instance.getFastMatchToken());
      }
  }
  