TestNG 八 并发测试
一、 Concurrenttesting:
下面的例子是输出进程ID,threadPoolSize用来指明线程池的大小,也就是并发的线程数目是多少
5次调用,有3个线程可调用
- @Test(invocationCount = 5, threadPoolSize = 3,groups = { "t9"})
- public void smallThreadPool() {
- System.out.println("Thread#: " +Thread.currentThread().getId());
- }
页面输出
[TestNG]Running:
E:\Android\selenium\test_wdng_java\src\testing.xml
Thread#:13
Thread#:15
Thread#: 14
Thread#:15
Thread#:15
===============================================
Suite
Totaltests run: 5, Failures: 0, Skips: 0
===============================================
若改成5次调用,有5个线程可调用
Thread#:10
Thread#:14
Thread#:12
Thread#:11
Thread#:13
二、Concurrentrunning of tests
TestNG可以以多线程的模式运行所有的test,这样可以获得最大的运行速度,最大限度的节约执行时间。当然,并发运行也是有代价的,就是需要我们的代码是线程安全的。
并发运行测试的话,需要我们指定运行的配置文件,一个示例如下:
- <suite name="Concurrent Suite" parallel="methods" thread-count="2" verbose="1" >
- <>……<>
- </suite>
1.Parallel=”methods”的意思是指TestNG会将method作为并发的元子单位,即每个method运行在自己的thread中。如果parallel=”tests”,则指会将test 作为并发的元子单位
2.Thread-count=”2”是指,运行的时候,并发度为2,同时会有两个线程在运行。
例如:
- @Test(groups = { "t8"})
- public void aThreadPool() {
- System.out.println("#ThreadA: " +Thread.currentThread().getId());
- }
- @Test(groups = { "t8"})
- public void bThreadPool() {
- System.out.println("#ThreadB: " +Thread.currentThread().getId());
- }
- @Test(groups = { "t8"})
- public void cThreadPool() {
- System.out.println("#ThreadC: " +Thread.currentThread().getId());
- }
--------------------------------------------------------------------
<testname="Test" parallel="methods"thread-count="2">
输出结果:
#ThreadB:11
#ThreadC:11
#ThreadA:10
===============================================
Suite
Totaltests run: 3, Failures: 0, Skips: 0
===============================================
改成<testname="Test" parallel="tests" thread-count="2">
页面输出(因为aThreadPool(),bThreadPool(),cThreadPool()都在一个test下面)
#ThreadA:1
#ThreadB:1
#ThreadC:1
===============================================
Suite
Totaltests run: 3, Failures: 0, Skips: 0
===============================================
本文转载自http://blog.sina.com.cn/bestfeiyong