如何使用testng并行运行我的硒测试方法

Question

我正在尝试使用testng并行运行我的自动化测试（Selenium webdriver）。这是我正在运行的节点：

java -Dwebdriver.gecko.driver=chromedriver.exe -jar selenium-server-standalone-3.4.0.jar -role node -hub http://localhost:4444/grid/register -browser browserName=chrome,maxInstances=2 -maxSession 2

这是我的测试类：

public class TestParallel {

Login login;

//@BeforeMethod(alwaysRun = true)
public SeleniumDriverCore testSetup() throws FileNotFoundException, IOException{
    SeleniumDriverCore driver = new SeleniumDriverCore("config/chromeDriverConfig");
    Properties config = new Properties();
    config.load(new FileInputStream("config/testConfig"));
    this.login = new Login(driver);
    driver.browser.open("https://test.test.xyz");

    driver.browser.maximize();
    driver.waits.waitForPageToLoad();
    return driver;
}

@Test(groups={"parallel"})
public void test_one() throws FileNotFoundException, IOException{
    SeleniumDriverCore driver=testSetup();
    login.navigateToPage(Pages.LOGIN);
    login.assertion.verifyLoginPopupAndTitleDisplayed();
    testCleanup(driver);
}

@Test(groups={"parallel"})
public void test_two() throws FileNotFoundException, IOException{
    SeleniumDriverCore driver=testSetup();
    login.navigateToPage(Pages.LOGIN);
    login.assertion.verifyLoginPopupAndTitleDisplayed();
    testCleanup(driver);
}

@Test(groups={"parallel"})
public void test_three() throws FileNotFoundException, IOException{
    SeleniumDriverCore driver=testSetup();
    login.navigateToPage(Pages.LOGIN);
    login.assertion.verifyLoginPopupAndTitleDisplayed();
    testCleanup(driver);
}

@Test(groups={"parallel"})
public void test_four() throws FileNotFoundException, IOException{
    SeleniumDriverCore driver=testSetup();
    login.navigateToPage(Pages.LOGIN);
    login.assertion.verifyLoginPopupAndTitleDisplayed();
    testCleanup(driver);
}


public void testCleanup(SeleniumDriverCore driver){
    driver.close();
    driver.quit();
}

}

这是我的xml：

<suite name="Ontega - All Tests Mobile" parallel="methods" thread-count="2">
    <test name="Ontega - All Tests Mobile">
        <groups>
            <run>
                <include name="parallel"/>
                <exclude name="open-defects"/>
            </run>
        </groups>
        <packages>
            <package name="tests.*"/>
        </packages>
    </test>
</suite>

当我运行XML时，我希望我的测试一次在两个线程中的两个浏览器上运行，但是当我运行XML时，我第一次运行两个浏览器实例然后它们会增加50％的测试失败，你可以看到我试图在我的每个方法中实例化驱动程序，虽然这不是我的框架如何工作，但我试图找到这个问题的瓶颈。任何帮助将非常感谢提前感谢

Answer 1

以下是在TestNG中执行此操作的一些方法。您基本上通过@BeforeMethod和@AfterMethod配置方法管理您的webdriver实例化和清理。那么您需要决定如何使用@Test方法共享创建的webdriver实例。为此你有三个选择：

1. 你使用了ThreadLocal变体，因为TestNG向你保证它将在同一个线程中执行@BeforeMethod，@Test和@AfterMethod。

这是一个示例，向您展示了这一点

import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.remote.RemoteWebDriver;
import org.testng.ITestResult;
import org.testng.Reporter;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

public class TestClassSampleUsingThreadLocal {
    private static final ThreadLocal<RemoteWebDriver> drivers = new ThreadLocal<>();

    @BeforeMethod
    public void instantiateBrowser(ITestResult testResult) {
        RemoteWebDriver driver = new ChromeDriver();
        drivers.set(driver);
    }

    @Test(dataProvider = "dp")
    public void testMethod(String url) {
        Reporter.log("Launching the URL [" + url + "] on Thread [" + Thread.currentThread().getId() + "]", true);
        driver().get(url);
        Reporter.log("Page Title :" + driver().getTitle(), true);
    }

    @DataProvider(name = "dp", parallel = true)
    public Object[][] getData() {
        return new Object[][]{
                {"http://www.google.com"}, {"http://www.stackoverflow.com"}, {"http://facebook.com"}
        };
    }

    @AfterMethod
    public void cleanupBrowser() {
        RemoteWebDriver driver = driver();
        driver.quit();
    }

    private RemoteWebDriver driver() {
        RemoteWebDriver driver = drivers.get();
        if (driver == null) {
            throw new IllegalStateException("Driver should have not been null.");
        }
        return driver;
    }

}

2. 您可以通过ITestResult对象共享webdriver实例。这是一个展示行动的样本。

import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.remote.RemoteWebDriver;
import org.testng.ITestResult;
import org.testng.Reporter;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

public class TestClassSample {
    private static final String WEBDRIVER = "driver";

    @BeforeMethod
    public void instantiateBrowser(ITestResult testResult) {
        RemoteWebDriver driver = new ChromeDriver();
        testResult.setAttribute(WEBDRIVER, driver);
    }

    @Test(dataProvider = "dp")
    public void testMethod(String url) {
        Reporter.log("Launching the URL [" + url + "] on Thread [" + Thread.currentThread().getId() + "]", true);
        driver().get(url);
        Reporter.log("Page Title :" + driver().getTitle(), true);
    }

    @DataProvider(name = "dp", parallel = true)
    public Object[][] getData() {
        return new Object[][]{
                {"http://www.google.com"},
                {"http://www.stackoverflow.com"},
                {"http://facebook.com"}
        };
    }

    @AfterMethod
    public void cleanupBrowser(ITestResult testResult) {
        RemoteWebDriver driver = driver(testResult);
        driver.quit();
    }

    private RemoteWebDriver driver() {
        return driver(Reporter.getCurrentTestResult());
    }

    private RemoteWebDriver driver(ITestResult testResult) {
        if (testResult == null) {
            throw new IllegalStateException("testResult should have not been null.");
        }
        Object driverObject = testResult.getAttribute(WEBDRIVER);
        if (driverObject == null) {
            throw new IllegalStateException("Driver should have not been null.");
        }
        if (!(driverObject instanceof RemoteWebDriver)) {
            throw new IllegalStateException("Driver is not a valid webdriver object");
        }
        return (RemoteWebDriver) driverObject;
    }
}

3. 您将webdriver实例化和清理提取到TestNG侦听器（实现org.testng.IInvokedMethodListener，将创建的webdriver设置为ITestResult（如选项2中所示）或ThreadLocal（如选项1中所示）。您可以找到更多详细信息关于此选项以及我的blog post中的代码片段。

Answer 2

您似乎每次测试都会创建多个驱动程序。我想你需要在testSetup（）方法之外保留一些代码

SeleniumDriverCore driver = new SeleniumDriverCore("config/chromeDriverConfig");
Properties config = new Properties();
config.load(new FileInputStream("config/testConfig"))

我正在分享我用于并行测试的部分代码，可能会对你的情况有所帮助

我的xml