content: package com.alibaba.json.bvt.serializer;
  
  import com.alibaba.fastjson.JSON;
  import org.junit.Assert;
  import junit.framework.TestCase;
  
  import com.alibaba.fastjson.serializer.JSONSerializer;
  import com.alibaba.fastjson.serializer.SerializeWriter;
  
  import java.text.SimpleDateFormat;
  import java.util.Calendar;
  import java.util.Date;
  import java.util.TimeZone;
  
  public class JSONSerializerTest1 extends TestCase {
      public void test_0 () throws Exception {
          SerializeWriter out = new SerializeWriter();
          JSONSerializer serializer = new JSONSerializer(out);
          
          Assert.assertEquals(0, serializer.getNameFilters().size());
          Assert.assertEquals(0, serializer.getNameFilters().size());
          
          Assert.assertEquals(0, serializer.getValueFilters().size());
          Assert.assertEquals(0, serializer.getValueFilters().size());
          
          Assert.assertEquals(0, serializer.getPropertyFilters().size());
          Assert.assertEquals(0, serializer.getPropertyFilters().size());
          
          serializer.writeWithFormat("123", null);
      }
  
      public void test_1() throws Exception {
          SerializeWriter out = new SerializeWriter();
          JSONSerializer serializer = new JSONSerializer(out);
  
          Calendar calendar = Calendar.getInstance();
          calendar.clear();
          calendar.set(2019, Calendar.SEPTEMBER, 5);
          Date date = calendar.getTime();
  
          String dateFormatPattern = "yyyy/MM/dd";
          SimpleDateFormat sdf = new SimpleDateFormat(dateFormatPattern);
  
          serializer.writeWithFormat(date, dateFormatPattern);
  
          assertEquals("\"" + sdf.format(date) + "\"", serializer.out.toString());
      }
  
      public void test_2() throws Exception {
          SerializeWriter out = new SerializeWriter();
          JSONSerializer serializer = new JSONSerializer(out);
  
          Calendar calendar = Calendar.getInstance();
          calendar.clear();
          calendar.set(2019, Calendar.SEPTEMBER, 5);
          Date date = calendar.getTime();
  
          String dateFormatPattern = "yyyy.MM.dd";
          String temp = JSON.DEFFAULT_DATE_FORMAT;
          JSON.DEFFAULT_DATE_FORMAT = dateFormatPattern;
  
          SimpleDateFormat sdf = new SimpleDateFormat(JSON.DEFFAULT_DATE_FORMAT);
          //传入null时调用JSON.DEFFAULT_DATE_FORMAT
          serializer.writeWithFormat(date, null);
  
          JSON.DEFFAULT_DATE_FORMAT = temp;
  
          assertEquals("\"" + sdf.format(date) + "\"", serializer.out.toString());
      }
  }
  