如何使用无头浏览器(HtmlUnitDriver/Phantomjs Driver)处理警报

Question

我正在使用PhantomJs驱动程序进行无头测试，我得到以下异常

示例代码：

import static org.testng.Assert.assertEquals;
import org.openqa.selenium.Alert;
import org.openqa.selenium.By;
import org.openqa.selenium.Capabilities;
import org.openqa.selenium.NoAlertPresentException;
import org.openqa.selenium.UnexpectedAlertBehaviour;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.phantomjs.PhantomJSDriver;
import org.openqa.selenium.remote.CapabilityType;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

public class TestLogin {    
WebDriver d;
@BeforeMethod
public void launh_Browser() {
System.setProperty("phantomjs.binary.path", "D:\Selenium\driver\phantomjs-2.1.1-windows\bin\phantomjs.exe");
Capabilities caps = new DesiredCapabilities();
((DesiredCapabilities) caps).setJavascriptEnabled(true);                
((DesiredCapabilities) caps).setCapability("takesScreenshot", true);     
d=new PhantomJSDriver(caps);
}
@Test
public void guru_banking_login_excel() throws Exception {
d.get("http://www.demo.guru99.com/V4/");
d.findElement(By.name("uid")).sendKeys("TestUser");
d.findElement(By.name("password")).sendKeys("testpwd");
d.findElement(By.name("btnLogin")).click();
try{ 
Alert alt = d.switchTo().alert();
String actualBoxMsg = alt.getText(); // get content of the Alter Message
assertEquals(actualBoxMsg,"User or Password is not valid");
alt.accept();          
}
catch (NoAlertPresentException Ex){ 
String hometitle=d.getTitle();
assertEquals(hometitle,"Guru99 Bank Manager HomePage");
}   
d.quit
}

观察到的错误：

Exception : org.openqa.selenium.UnsupportedCommandException: Invalid Command Method - {"headers":{"Accept-Encoding":"gzip,deflate","Cache-Control":"no-cache","Connection":"Keep-Alive","

我正在尝试使用phantomjs作为驱动程序来处理弹出窗口 请帮忙

...提前致谢..!!!

Answer 1

你必须在代码中注意很多要点：

1. 在使用PhantomJS时，当您提到System.setProperty使用以下代码行时：

   File src = new File("C:\Utility\phantomjs-2.1.1-windows\bin\phantomjs.exe");
   System.setProperty("phantomjs.binary.path", src.getAbsolutePath());
   

2. DesiredCapabilities类型的对象必须仅引用DesiredCapabilities类来启动。所以改为：

   DesiredCapabilities caps = new DesiredCapabilities();
   

使用

3. assertEquals使用Assert.assertEquals如下：

   Assert.assertEquals(actualBoxMsg,"User or Password is not valid");
   //
   Assert.assertEquals(hometitle,"Guru99 Bank Manager HomePage");
   

4. 当您使用TestNG时，对于Assert，请使用org.testng.Assert;而不是static org.testng.Assert.assertEquals;作为导入：

   import org.testng.Assert;
   

5. 您还需要将行d.quit()包装在一个单独的TestNG Annotated函数中，如下所示：

   @AfterMethod
   public void tearDown() {
   d.quit();
   }
   

6. 这是你自己的代码块，它成功执行：

   package headlessBrowserTesting;
   import java.io.File;
   import org.openqa.selenium.Alert;
   import org.openqa.selenium.By;
   import org.openqa.selenium.NoAlertPresentException;
   import org.openqa.selenium.WebDriver;
   import org.openqa.selenium.phantomjs.PhantomJSDriver;
   import org.openqa.selenium.remote.DesiredCapabilities;
   import org.testng.Assert;
   import org.testng.annotations.AfterMethod;
   import org.testng.annotations.BeforeMethod;
   import org.testng.annotations.Test;
   public class PhantomJS_webdriver_binary 
   {
   WebDriver d;
   @BeforeMethod
   public void launh_Browser() {
   File src = new File("C:\Utility\phantomjs-2.1.1-windows\bin\phantomjs.exe");
   System.setProperty("phantomjs.binary.path", src.getAbsolutePath());
   DesiredCapabilities caps = new DesiredCapabilities();
   ((DesiredCapabilities) caps).setJavascriptEnabled(true);                
   ((DesiredCapabilities) caps).setCapability("takesScreenshot", true);     
   d=new PhantomJSDriver(caps);
   }
   @Test
   public void guru_banking_login_excel() throws Exception {
   d.get("http://www.demo.guru99.com/V4/");
   d.findElement(By.name("uid")).sendKeys("TestUser");
   d.findElement(By.name("password")).sendKeys("testpwd");
   d.findElement(By.name("btnLogin")).click();
   try{ 
   Alert alt = d.switchTo().alert();
   String actualBoxMsg = alt.getText();
   Assert.assertEquals(actualBoxMsg,"User or Password is not valid");
   alt.accept();          
   }
   catch (NoAlertPresentException Ex){ 
   String hometitle=d.getTitle();
   Assert.assertEquals(hometitle,"Guru99 Bank Manager HomePage");
   }  
   }
   @AfterMethod
   public void tearDown() {
   d.quit();
   }
   }