我使用TestNG xml文件来管理测试队列和环境参数。 并且想使用WebdriverManager库来注册系统中的驱动程序。但是，如果线程数超过1，则驱动程序未正确注册。请参阅下文。
对于instanse，这里是测试配置和驱动程序实例化的一个例子：
测试1：
<suite name="project">
<test name = "Wiki search tests" verbose="1" parallel="true">
<parameter name="browserName" value="firefox" />
<classes>
<class name="project.tests.WikiSearchTest"/>
</classes>
</test>
</suite>
测试2：
<suite name="project">
<test name = "Wiki authorization tests" verbose="1" parallel="true">
<parameter name="browserName" value="chrome" />
<classes>
<class name="project.tests.LoginTest"/>
</classes>
</test>
</suite>
如您所见，两者都有“browserName”参数，但其中包含不同的值。 驱动程序在测试基类中注册的示例：
private static final CountDownLatch latch = new CountDownLatch(1);
@Parameters({"browserName"})
@BeforeTest
public void setUp(@Optional String browserName) throws InterruptedException{
switch (browserName) {
case "firefox" :
FirefoxDriverManager.getInstance().setup();
latch.countDown();
System.out.println(" in firefox");
break;
case "chrome" :
ChromeDriverManager.getInstance().setup();
latch.countDown();
System.out.println(" in chrome");
break;
}
latch.await();
Surefire插件线程设置：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire.version}</version>
<configuration>
<properties>
<property>
<name>suitethreadpoolsize</name>
<value>2</value>
</property>
对于suitethreadpoolsize属性，当测试以value = 1运行时，一切都完美无缺：
Running TestSuite
[2017-04-10 11:32:45:490] [main] INFO BrowserManager - Reading https://chromedriver.storage.googleapis.com/ to seek [chromedriver]
[2017-04-10 11:32:46:172] [main] INFO BrowserManager - Latest version of [chromedriver] is 2.29
[2017-04-10 11:32:46:190] [main] INFO BrowserManager - Exporting webdriver.chrome.driver as C:\Users\bnesteruk\.m2\repository\webdriver\chromedriver\win32\2.29\chromedriver.exe
in chrome
Starting ChromeDriver 2.29.461591 (62ebf098771772160f391d75e589dc567915b233) on port 11014
[2017-04-10 11:32:49:314] [main] INFO BrowserManager - Reading https://api.github.com/repos/mozilla/geckodriver/releases to seek [wires, geckodriver]
[2017-04-10 11:32:49:590] [main] INFO BrowserManager - Latest version of [wires, geckodriver] is 0.15.0
[2017-04-10 11:32:49:649] [main] INFO BrowserManager - Exporting webdriver.gecko.driver as C:\Users\bnesteruk\.m2\repository\webdriver\geckodriver\win64\0.15.0\geckodriver.exe
in firefox
Tests run: 0, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 7.831 sec - in TestSuite
问题：
如果我在surefire插件中设置的线程数超过1，
<property>
<name>suitethreadpoolsize</name>
<value>4</value>
</property>
两个.setup（）方法并行运行，并且看起来BrowserManager中的webdriver的静态实例只是被上一个浏览器名称（在我的示例中为geckodriver）所取代
[2017-04-10 11:38:00:726] [pool-1-thread-1] INFO BrowserManager - Reading https://api.github.com/repos/mozilla/geckodriver/releases to seek [wires, geckodriver]
[2017-04-10 11:38:00:726] [pool-1-thread-2] INFO BrowserManager - Reading https://api.github.com/repos/mozilla/geckodriver/releases to seek [wires, geckodriver]
[2017-04-10 11:38:01:301] [pool-1-thread-2] INFO BrowserManager - Latest version of [wires, geckodriver] is 0.15.0
[2017-04-10 11:38:01:301] [pool-1-thread-1] INFO BrowserManager - Latest version of [wires, geckodriver] is 0.15.0
[2017-04-10 11:38:01:361] [pool-1-thread-2] INFO BrowserManager - Exporting webdriver.gecko.driver as C:\Users\bnesteruk\.m2\repository\webdriver\geckodriver\win64\0.15.0\geckodriver.exe
[2017-04-10 11:38:01:361] [pool-1-thread-1] INFO BrowserManager - Exporting webdriver.gecko.driver as C:\Users\bnesteruk\.m2\repository\webdriver\geckodriver\win64\0.15.0\geckodriver.exe
in chrome
in firefox
[WARNING] [11:38:01.496] The path to the driver executable must be set by the webdriver.chrome.driver system property; for more information, see https://github.com/SeleniumHQ/selenium/wiki/ChromeDriver. The latest version can be downloaded from http://chromedriver.storage.googleapis.com/index.html
我想，我正在以错误的方式使用CountDownLatch？我怎么能这样呢？
答案 0 :(得分：0)
您可以使用Java CountDownLatch在WebDriverManager工作时等待。像这样的东西（当然适合你的代码）：
// Latch declaration (maybe as a class field)
CountDownLatch latch = new CountDownLatch(1);
// Somewhere in your code, you call to WebDriverManabger
ChromeDriverManager.getInstance().setup();
latch.countDown();
// In some other place in your code, you instantiate a WebDriver object
latch.await();
WebDriver chrome = new ChromeDriver();
答案 1 :(得分：0)
通过向驱动程序注册部分添加简单的同步（BrowserManager）部分解决了这个问题，谢谢！
synchronized (BrowserManager.class) {
switch (browserName) {
case "firefox":
FirefoxDriverManager.getInstance().setup();
System.out.println("Registering FIREFOX");
break;
case "chrome":
ChromeDriverManager.getInstance().setup();
System.out.println("Registering CHROME");
break;
}
}
输出
Running TestSuite
Registering CHROME
[2017-04-10 12:34:51:913] [pool-1-thread-2] INFO BrowserManager - Reading https://chromedriver.storage.googleapis.com/ to seek [chromedriver]
[2017-04-10 12:34:52:604] [pool-1-thread-2] INFO BrowserManager - Latest version of [chromedriver] is 2.29
[2017-04-10 12:34:52:624] [pool-1-thread-2] INFO BrowserManager - Exporting webdriver.chrome.driver as C:\Users\bnesteruk\.m2\repository\webdriver\chromedriver\win32\2.29\chromedriver.exe
Registering FIREFOX
[2017-04-10 12:34:53:206] [pool-1-thread-1] INFO BrowserManager - Reading https://api.github.com/repos/mozilla/geckodriver/releases to seek [wires, geckodriver]
[2017-04-10 12:34:53:487] [pool-1-thread-1] INFO BrowserManager - Latest version of [wires, geckodriver] is 0.15.0
[2017-04-10 12:34:53:505] [pool-1-thread-1] INFO BrowserManager - Exporting webdriver.gecko.driver as C:\Users\bnesteruk\.m2\repository\webdriver\geckodriver\win64\0.15.0\geckodriver.exe