一、category 和 testSuite的比较
(1)testSuite是类级分组(xx.class)
(2)category是用例级分组(@Test)
(3)category是testSuite的升级:Category可以实现TestSuite的功能
二、category使用步骤
1、创建好测试类,及测试类中的测试用例
2、创建接口:按用例的分组来创建
3、@Category注解:将用例用@Category注解分组
4、创建类来执行这些分组的类
三、实例
1、创建测试类A.java,B.java

1 package zttc.itat.Category; 2 import org.junit.Test; 3 import org.junit.experimental.categories.Category; 4 public class A { 5 @Test 6 public void a() { 7 System.out.println("A a()"); 8 } 9 10 //用例分组:SlowTests.class 11 @Category(SlowTests.class) 12 @Test 13 public void b() { 14 System.out.println("A b()"); 15 } 16 }

1 package zttc.itat.Category; 2 3 import org.junit.Test; 4 import org.junit.experimental.categories.Category; 5 6 //@Category注解中,可以使用多个分类类型,eg:@Category({A.class,B.class}); 7 @Category({ 8 SlowTests.class, 9 FastTests.class 10 }) 11 public class B { 12 @Test 13 public void c() { 14 System.out.println("B c()"); 15 } 16 17 @Test 18 public void d() { 19 System.out.println("B d()"); 20 } 21 }
2、创建接口SlowTests.java、FastTests.java(用例分几组,就创建几个接口)

1 package zttc.itat.Category; 2 public interface SlowTests { 3 4 }

1 package zttc.itat.Category; 2 public interface FastTests{ 3 4 }
3、@Category注解:将用例用@Category注解分组
(1)@Category可以注解在用例上,也可以注解在类上;
(2)一个用例可以同时在多个组:@Category可以使用多个分组类型,eg:@Category({A.class,B.class})
4、创建类来执行这些分组的类
1 package zttc.itat.Category; 2 import org.junit.experimental.categories.Categories; 3 import org.junit.experimental.categories.Categories.IncludeCategory; 4 import org.junit.experimental.categories.Categories.ExcludeCategory; 5 import org.junit.runner.RunWith; 6 import org.junit.runners.Suite; 7 import zttc.itat.Category.A; 8 import zttc.itat.Category.B; 9 //表示此类为Category类 10 @RunWith(Categories.class) 11 //要运行的类 12 @Suite.SuiteClasses({ 13 A.class, 14 B.class 15 }) // Note that Categories is a kind of Suite 16 @IncludeCategory(SlowTests.class)//要运行的用例组 17 //@ExcludeCategory(FastTests.class)//不要运行的用例组 18 public class SlowTestSuite { 19 // Will run A.b、 B.c and B.d, but not A.a 20 }
【注】SlowTestSuite.java没有 @IncludeCategory 和 @ExcludeCategory 注解,功能同testSuite