testng参数化方法:Parameters和DataProvider
Parameters注解在测试方法上指定参数列表,然后在测试方法中声明对应的形参,形参与参数列表一一对应,但名字可以不同,如下所示:
1 public class Test1 { 2 3 @Parameters({"Name", "Age", "Hobby"}) 4 @Test 5 public void test1(String name, int age, String hobby) { 6 System.out.println(name + " is " + age + " years old and likes " + hobby); 7 } 8 }
然后在XML文件中通过<parameter>标签对每个参数赋值,采用name-value对的形式:
1 <suite name="suite1"> 2 <parameter name="Name" value="xiaoming" /> 3 <parameter name="Age" value="20" /> 4 <parameter name="Hobby" value="dajiangyou" /> 5 6 <test name="test1" verbose="2"> 7 <classes> 8 <class name="sea.Test1" /> 9 </classes> 10 </test> 11 12 </suite>
运行结果为:
xiaoming is 20 years old and likes dajiangyou
PASSED: test1("xiaoming", 20, "dajiangyou")
Parameters一般用于比较简单的参数,对于参数比较多、复杂或者需要从文件读取的时候一般使用DataProvider注解。
采用DataProvider时构造参数的方法必须返回Obiect[][],可以看着二维数组(当然也可存放一维数据)。
使用时,首先定义一个DataProvider,通过name参数指定该测试数据的名字;
然后在测试方法中,通过Test注解的dataProvider参数指定需要使用的测试数据名字,多个测试方法可以使用同一个dataProvider;
最后在测试方法的形参列表中,定义与Obiect[][]的每一行数据一一对应的参数,该测试方法被执行时,有多少组参数就会被执行多少次。
举例如下,可以看到test2这个用例被执行了3次:
1 public class Test1 { 2 @DataProvider(name = "data1") 3 public Object[][] createdata() { 4 return new Object[][] { 5 {"lilei", 20, "football"}, 6 {"hanmeimei", 18, "music"}, 7 {"wangnima", 25, "baozoumanhua"} 8 }; 9 } 10 11 @Test(dataProvider = "data1") 12 public void test2(String name, int age, String hobby) { 13 System.out.println(name + " is " + age + " years old and likes " + hobby); 14 } 15 }
lilei is 20 years old and likes football hanmeimei is 18 years old and likes music wangnima is 25 years old and likes baozoumanhua PASSED: test2("lilei", 20, "football") PASSED: test2("hanmeimei", 18, "music") PASSED: test2("wangnima", 25, "baozoumanhua")