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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; } } |
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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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