[java]junit4

Junit4,与3.x有所区别

[java]junit4 - believefym的专栏 - CSDN博客.rar(147 KB)

1. 测试类不需要extends TestCase，代之以annotation，即测试类（不需要extends TestCase）的方法只要有@Test就可以了
2. 测试方法命名不需要一定要以test开头

package junit;

public class Unit ...{
    private int data;
   
    public Unit(int data)...{
        this.data = data;
    }
    public boolean test()...{
        return true;
    }
   
    public boolean equals(Object o)...{
        if(o instanceof Unit)...{
            return ((Unit)o).data == data;           
        }
       
        return false;
    }
   
    public void exception()...{
        if (this.data==0)
            throw new IndexOutOfBoundsException("exception in Unit");
    }
}

可以用eclipse自动生成测试类，选中要测试的类，然后new -junit test case

测试类：
package junit;

import org.junit.*;

public class UnitTest ...{

    private Unit unit1 = new Unit(1);
    private Unit unit2 = new Unit(2);   
   
    @BeforeClass
    public static void setUpBeforeClass() throws Exception ...{
        System.out.println("setUpBeforeClass");
    }

    @AfterClass
    public static void tearDownAfterClass() throws Exception ...{
        System.out.println("tearDownAfterClass");
    }

    @Before
    public void setUp() throws Exception ...{
        System.out.println("setUp");
    }

    @After
    public void tearDown() throws Exception ...{
        System.out.println("tearDown");
    }

    @Test
    public void notestTest() ...{    // 方法名不以test开头
        //fail("Not yet implemented");
        Assert.assertTrue(unit1.test());
    }

    @Test
    public void testEqualsObject() ...{
        //fail("Not yet implemented");
        Assert.assertEquals(unit1, new Unit(1));
        Assert.assertEquals(unit1, unit2);
    }

    @Test(expected = IndexOutOfBoundsException.class)
    public void testException() ...{
        //fail("Not yet implemented");
        new Unit(0).exception();
    }
}

测试结果如下

为了进行TestSuit，再增加一个testcase
package junit;

public class Unit2 ...{
    public boolean test()...{
        return true;
    }
}

package junit;

import org.junit.Test;

public class Unit2Test ...{

    @Test
    public void testTest() ...{
        //fail("Not yet implemented");
        org.junit.Assert.assertTrue(new Unit2().test());
    }

}

==================================================================================
增加一个TestSuit（使用ecilpse的new -junit Test Suit只能找到3.x风格的extends TestCase的测试类，不知为何）
package junit;

import org.junit.runner.RunWith;
import org.junit.runners.Suite;
import org.junit.runners.Suite.SuiteClasses;

@RunWith(Suite.class)
@SuiteClasses( ...{ UnitTest.class, Unit2Test.class })
public class Suit ...{
}

TestSuit测试结果

以下是控制台输出信息，跟测试类的各种annotation有关

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