所以我有一个硒网格中心，每个浏览器（Safari 12.1.2，Firefox 69.0，Chrome 76.0）的一个节点注册有5个实例。每当我尝试使用并行且线程数等于或大于2的方法运行测试时，都会不断出现错误，告知有关会话创建问题的信息。很奇怪，但是Chrome中的测试还是会通过的（有时Safari中的测试也会通过）。我相信测试脚本是好的。我相信问题与方法共享同一浏览器会话这一事实有关，尽管我实现了线程安全方法，但是，肯定有一些我想不到的东西。我认为问题出在TestBase.class的某个地方，虽然不确定。用完了ide。请告知。
硒网格3 Selenium-java库：v 3.141.59 java.version：“ 11.0.4” Safari 12.1.2，Firefox 69.0，Chrome 76.0
这是我的配置节点：
browserTimeout: 0
debug: false
help: false
port: 4445
role: node
timeout: 1800
cleanUpCycle: 5000
host: 169.254.129.238
maxSession: 5
capabilities: Capabilities {browserName: firefox, browserVersion: 69.0, maxInstances: 5, platform: MAC, platformName: mac, se:CONFIG_UUID: 42a26507-e6b8-4463-a6e3-fd7..., seleniumProtocol: WebDriver}
capabilities: Capabilities {browserName: chrome, browserVersion: 76.0, maxInstances: 5, platform: MAC, platformName: mac, se:CONFIG_UUID: c6a7fd21-84cb-4295-be81-cd6..., seleniumProtocol: WebDriver}
capabilities: Capabilities {browserName: safari, browserVersion: 12.1.2, maxInstances: 5, platform: MAC, platformName: mac, se:CONFIG_UUID: 606e350d-f4b7-405a-a772-6c7..., seleniumProtocol: WebDriver}
downPollingLimit: 2
hub: http://localhost:4444
id: http://169.254.129.238:4445
nodePolling: 5000
nodeStatusCheckTimeout: 5000
proxy: org.openqa.grid.selenium.proxy.DefaultRemoteProxy
register: true
registerCycle: 5000
remoteHost: http://169.254.129.238:4445
unregisterIfStillDownAfter: 60000
My testng.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite thread-count="3" name="Suite" parallel="tests">
<listeners>
<listener class-name="Base.TestListener"/>
<!--<listener class-name="Base.RetryListener"/>-->
</listeners>
<parameter name="appURL" value="https://www.google.com"/>
<test name="Chrome_tests" parallel="methods" thread-count="2">
<parameter name="browser" value="chrome"/>
<parameter name="browser_version" value="76.0"/>
<parameter name="platform" value="mac"/>
<classes>
<class name="Tests.FirstTest">
<methods>
<include name="GOOGLE1" />
<include name="GOOGLE2" />
<include name="GOOGLE3" />
</methods>
</class>
</classes>
</test>
<test name="Firefox_tests" parallel="methods" thread-count="2">
<parameter name="browser" value="firefox"/>
<parameter name="browser_version" value="69.0"/>
<parameter name="platform" value="mac"/>
<classes>
<class name="Tests.FirstTest">
<methods>
<include name="GOOGLE1"/>
<include name="GOOGLE2"/>
<!--<include name="GOOGLE3" />-->
</methods>
</class>
</classes>
</test> <!-- Second Test -->
<test name="Safari_tests" parallel="methods" thread-count="1">
<parameter name="browser" value="safari"/>
<parameter name="browser_version" value="12.1.2"/>
<parameter name="platform" value="mac"/>
<classes>
<class name="Tests.FirstTest">
<methods>
<include name="GOOGLE1"/>
<include name="GOOGLE2"/>
<!--<include name="GOOGLE3" />-->
</methods>
</class>
</classes>
</test> <!-- Second Test -->
</suite>
我的TestBase.class
public class TestBase {
//Declare ThreadLocal Driver (ThreadLocalMap) for ThreadSafe Tests
public ThreadLocal<RemoteWebDriver> driver = new ThreadLocal<>();
public CapabilityFactory capabilityFactory = new CapabilityFactory();
@BeforeMethod
@Parameters({"browser", "appURL", "browser_version", "platform"})
public void setup (String browser, String appURL, String browser_version, String platform) throws MalformedURLException {
//Set Browser to ThreadLocalMap
driver.set(new RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), capabilityFactory.getCapabilities(browser, browser_version, platform)));
getDriver().manage().window().maximize();
getDriver().navigate().to(appURL);
}
public WebDriver getDriver() {
//Get driver from ThreadLocalMap
return driver.get();
}
@AfterMethod
public void tearDown() {
getDriver().quit();
driver.remove();
}
}
CapabilityFactory.class
public class CapabilityFactory {
public Capabilities capabilities;
public Capabilities getCapabilities (String browser, String browser_version, String platform) {
if (browser.equals("chrome"))
capabilities = getChromeOptions(browser_version, platform, browser);
if (browser.equals("firefox"))
capabilities = getFirefoxOptions(browser_version, platform, browser);
if (browser.equals("safari"))
capabilities = getSafariOptions(browser_version, platform, browser);
return capabilities;
}
//Get Chrome Options
public ChromeOptions getChromeOptions(String browser_version, String platform, String browser) {
ChromeOptions options = new ChromeOptions();
/*DesiredCapabilities cap = DesiredCapabilities.chrome();
cap.setCapability("browser_version", browser_version);
cap.setCapability("os", platform);
options.merge(cap);*/
options.setCapability("browserVersion", browser_version);
options.setCapability("platformName", platform);
options.setCapability("browserName", browser);
/*cap.setCapability("os_version", "10");
cap.setCapability("resolution", "1024x768");
cap.setCapability("name", "Bstack-[Java] Sample Test");*/
/*options.addArguments("--start-maximized");
options.addArguments("--ignore-certificate-errors");
options.addArguments("--disable-popup-blocking");*/
//options.addArguments("--incognito");
return options;
}
//Get Firefox Options
public FirefoxOptions getFirefoxOptions(String browser_version, String platform, String browser) {
FirefoxOptions options = new FirefoxOptions();
/*System.setProperty("webdriver.gecko.driver", "/Users/Sasha/Documents/Selenium_projects/testng_maven/SeleniumGrid/src/main/resources/geckodriver");*/
options.setCapability("browserVersion", browser_version);
options.setCapability("platformName", platform);
options.setCapability("browserName", browser);
/*DesiredCapabilities cap = DesiredCapabilities.firefox();
cap.setCapability("browser_version", browser_version);
cap.setCapability("os", platform);
options.merge(cap);*/
/*FirefoxProfile profile = new FirefoxProfile();
//Accept Untrusted Certificates
profile.setAcceptUntrustedCertificates(true);
profile.setAssumeUntrustedCertificateIssuer(false);
//Use No Proxy Settings
profile.setPreference("network.proxy.type", 0);
//Set Firefox profile to capabilities
options.setCapability(FirefoxDriver.PROFILE, profile);*/
return options;
}
public SafariOptions getSafariOptions(String browser_version, String platform, String browser) {
SafariOptions options = new SafariOptions();
options.setCapability("browserVersion", browser_version);
options.setCapability("platformName", platform);
options.setCapability("browserName", browser);
/*FirefoxProfile profile = new FirefoxProfile();
//Accept Untrusted Certificates
profile.setAcceptUntrustedCertificates(true);
profile.setAssumeUntrustedCertificateIssuer(false);
//Use No Proxy Settings
profile.setPreference("network.proxy.type", 0);
//Set Firefox profile to capabilities
options.setCapability(FirefoxDriver.PROFILE, profile);*/
return options;
}
}
FirstTest.class
public class FirstTest extends TestBase {
@Test
public void GOOGLE1() {
System.out.println("Google1 Test Started! " + "Thread Id: " + Thread.currentThread().getId());
getDriver().navigate().to("http://www.google.com");
System.out.println("Google1 Test's Page title is: " + getDriver().getTitle() +" " + "Thread Id: " + Thread.currentThread().getId());
Assert.assertEquals(getDriver().getTitle(), "Google");
System.out.println("Google1 Test Ended! " + "Thread Id: " + Thread.currentThread().getId());
}
@Test
public void GOOGLE2() {
System.out.println("Google2 Test Started! " + "Thread Id: " + Thread.currentThread().getId());
getDriver().navigate().to("http://www.google.com");
System.out.println("Google2 Test's Page title is: " + getDriver().getTitle() +" " + "Thread Id: " + Thread.currentThread().getId());
Assert.assertEquals(getDriver().getTitle(), "Google");
System.out.println("Google2 Test Ended! " + "Thread Id: " + Thread.currentThread().getId());
}
@Test
public void GOOGLE3() {
System.out.println("Google3 Test Started! " + "Thread Id: " + Thread.currentThread().getId());
getDriver().navigate().to("http://www.google.com");
System.out.println("Google3 Test's Page title is: " + getDriver().getTitle() +" " + "Thread Id: " + Thread.currentThread().getId());
Assert.assertEquals(getDriver().getTitle(), "Google");
System.out.println("Google3 Test Ended! " + "Thread Id: " + Thread.currentThread().getId());
}
}
这是我在控制台中得到的：
Chrome_tests started ***
Firefox_tests started ***
Safari_tests started ***
*** Tests GOOGLE1 skipped...
org.openqa.selenium.SessionNotCreatedException: Could not create a session: The Safari instance is already paired with another WebDriver session.
Build info: version: '3.9.0', revision: '698b3178f0', time: '2018-02-05T14:56:13.134Z'
System info: host: 'Sashas-MacBook-Pro.local', ip: '192.168.88.183', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.6', java.version: '11.0.4'
Driver info: driver.version: unknown
remote stacktrace:
Command duration or timeout: 25.97 seconds
Caused by: org.openqa.selenium.SessionNotCreatedException: Could not create a session: The Safari instance is already paired with another WebDriver session.
Build info: version: '3.9.0', revision: '698b3178f0', time: '2018-02-05T14:56:13.134Z'
System info: host: 'Sashas-MacBook-Pro.local', ip: '192.168.88.183', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.6', java.version: '11.0.4'
Driver info: driver.version: unknown
remote stacktrace:
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03'
System info: host: 'Sashas-MacBook-Pro.local', ip: '192.168.88.183', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.6', java.version: '10.0.2'
Driver info: driver.version: unknown
org.openqa.selenium.SessionNotCreatedException: Unable to create session from org.openqa.selenium.remote.NewSessionPayload@1b7d4b97
Build info: version: '3.9.0', revision: '698b3178f0', time: '2018-02-05T14:56:13.134Z'
System info: host: 'Sashas-MacBook-Pro.local', ip: '192.168.88.183', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.6', java.version: '11.0.4'
Driver info: driver.version: unknown
Caused by: org.openqa.selenium.SessionNotCreatedException: Unable to create session from org.openqa.selenium.remote.NewSessionPayload@1b7d4b97
Build info: version: '3.9.0', revision: '698b3178f0', time: '2018-02-05T14:56:13.134Z'
System info: host: 'Sashas-MacBook-Pro.local', ip: '192.168.88.183', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.6', java.version: '11.0.4'
Driver info: driver.version: unknown
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03'
System info: host: 'Sashas-MacBook-Pro.local', ip: '192.168.88.183', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.6', java.version: '10.0.2'
Driver info: driver.version: unknown
org.openqa.selenium.SessionNotCreatedException: Unable to create session from org.openqa.selenium.remote.NewSessionPayload@3f5cca9c
Build info: version: '3.9.0', revision: '698b3178f0', time: '2018-02-05T14:56:13.134Z'
System info: host: 'Sashas-MacBook-Pro.local', ip: '192.168.88.183', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.6', java.version: '11.0.4'
Driver info: driver.version: unknown
Caused by: org.openqa.selenium.SessionNotCreatedException: Unable to create session from org.openqa.selenium.remote.NewSessionPayload@3f5cca9c
Build info: version: '3.9.0', revision: '698b3178f0', time: '2018-02-05T14:56:13.134Z'
System info: host: 'Sashas-MacBook-Pro.local', ip: '192.168.88.183', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.6', java.version: '11.0.4'
Driver info: driver.version: unknown
Build info: version: '3.141.59', revision: 'e82be7d358', time: '2018-11-14T08:17:03'
System info: host: 'Sashas-MacBook-Pro.local', ip: '192.168.88.183', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.6', java.version: '10.0.2'
Driver info: driver.version: unknown
Sep 11, 2019 7:07:32 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: W3C
Sep 11, 2019 7:07:32 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: W3C
*** Running test method GOOGLE1...
Directory already exists: /Users/Sasha/Documents/Selenium_projects/testng_maven/SeleniumGrid/TestReport
*** Running test method GOOGLE2...
Google2 Test Started! Thread Id: 20
Google1 Test Started! Thread Id: 16
Google2 Test's Page title is: Google Thread Id: 20
Google1 Test's Page title is: Google Thread Id: 16
Google1 Test Ended! Thread Id: 16
*** Executed GOOGLE1 test method successfully...
Google2 Test Ended! Thread Id: 20
*** Executed GOOGLE2 test method successfully...
Sep 11, 2019 7:07:42 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: W3C
*** Running test method GOOGLE3...
Google3 Test Started! Thread Id: 20
Google3 Test's Page title is: Google Thread Id: 20
Google3 Test Ended! Thread Id: 20
*** Executed GOOGLE3 test method successfully...
Chrome_tests ending ***
log4j:WARN No appenders could be found for logger (freemarker.cache).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Test ignored.
*** Running test method GOOGLE1...
Test ignored.
*** Running test method GOOGLE2...
*** Tests GOOGLE2 skipped...
Firefox_tests ending ***
Test ignored.
*** Running test method GOOGLE1...
*** Tests GOOGLE1 skipped...
Test ignored.
*** Running test method GOOGLE2...
*** Tests GOOGLE2 skipped...
Safari_tests ending ***
===============================================
Suite
Total tests run: 7, Passes: 3, Failures: 0, Skips: 4
Configuration Failures: 3, Skips: 5
===============================================
Process finished with exit code 0
答案 0 :(得分：0)
Safari一次只能处理1个浏览器，类似于IE和Edge。 Firefox和Chrome应该能够处理更多。参见this link from apple
在任何给定时间，只有一个Safari浏览器实例可以处于活动状态，并且 一次只能将一个WebDriver会话附加到浏览器 实例。这些限制条件可确保模拟行为（鼠标， 键盘，触摸等）准确反映出用户可以执行的操作 在macOS窗口环境中，并防止测试竞争 彼此保持窗口和键盘焦点。