junit单元测试java加减乘除程序(除数为0异常处理)

public class Calculator {

	public  int Jia(int a,int b){
		return a+b;
		
	}
	public int Jian(int a,int b){
		return a-b;
		
	}
	public int Cheng(int a,int b){
		return a*b;
		
	}
	public int Chu (int a,int b) throws Exception{
		if(b==0){ throw new Exception("除数不能为0");}
		return a/b;
		
	}	
	
}

import junit.framework.Assert;
import junit.framework.TestCase;

public class CalculatorTest extends TestCase {
	Calculator cl=new Calculator();
	
	protected void setUp() throws Exception {
		super.setUp();
	}

	protected void tearDown() throws Exception {
		super.tearDown();
	}

	public void testJia() {
		int result;
		result = cl.Jia(3, 2);
		Assert.assertEquals(5, result);
	}

	public void testJian() {
		 int result;
		 result = cl.Jian(6,3);
		Assert.assertEquals(3, result);
	}

	public void testCheng() {
		 int result;
		 result = cl.Cheng(2,3);
		Assert.assertEquals(6, result);
	}

	public void testChu() throws Exception {
		 int result;
	 result = cl.Chu(6,3);
	Assert.assertEquals(2, result);
	
		 try  
		  {   
			 result =cl.Chu(4,0);
			                  
		   }   
		   catch(Exception ex){
			   assertEquals("除数不能为0!", ex.getMessage());  
			      fail("除数不能为0");    
		   }   
		 }
	

}

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