有没有办法清除JAVA中对象的所有字段？

Question

我正在测试一个包含多个字段的对象.每次我都设置不同的属性并测试对象.

 Processor processor =new Processor();
 TradeData tradeData = new TradeData();

 //case 1
 tradeData.setIndex("1");
 tradeData.setName("abc");
 processor.process(tradeData);
 Assert.assertEquals("def",tradeData.getCategory());

 //Case 2
 tradeData.setCity("1");
 tradeData.setSystem("abc");
 processor.process(tradeData);
 Assert.assertEquals("fgh",tradeData.getCategory());

喜欢明智的测试多个案例.有没有办法在每种情况之前清除tradeData的属性.有没有像obj.clear()这样的方法.我不想在每个案例之前声明new()对象.

Answer 1

当您考虑在测试中清除对象的状态时,这通常是代码味道.

您可能应该使用@Before编写测试来设置每个测试.

Processor processor;
TradeData tradeData;

@Before 
public void initialize() {
  processor = new Processor();
  tradeData = new TradeData();
}

@Test
public void case1() {
  tradeData.setIndex("1");
  tradeData.setName("abc");
  processor.process(tradeData);
  Assert.assertEquals("def",tradeData.getCategory());
}

@Test
public void case2() {
  tradeData.setCity("1");
  tradeData.setSystem("abc");
  processor.process(tradeData);
  Assert.assertEquals("fgh",tradeData.getCategory());
}