junit高级篇（参数化、打包测试）-实例代码

工程目录：

参数化测试，SquareTest.java:

 import static org.junit.Assert.*;

 import java.util.Arrays;
 import java.util.Collection;

 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
 import org.junit.runners.Parameterized.Parameters;

 @RunWith(Parameterized.class)
 public class SquareTest {
     private static Calculator calculator = new Calculator();
     private int param;
     private int result;

     @Parameters
     public static Collection data(){
         return Arrays.asList(new Object[][]{
                 {2,4},
                 {0,0},
                 {-3,9},
         });
     }

     //构造函数，对变量进行初始化
     public SquareTest(int param,int result){
         this.param = param;
         this.result = result;
     }

     @Test
     public void square(){
         calculator.square(param);
         assertEquals(result,calculator.getResult());
     }

 }

打包测试，AllCalculatorTests.java:

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

 @RunWith(Suite.class)
 @Suite.SuiteClasses({
     CalculatorTest.class,
     SquareTest.class
 })
 public class AllCalculatorTests {

 }

执行AllCalculatorTests.java的结果