ロケータオブジェクトのSearchContextをnullにすることはできません

Question

私はすでに多くのフォーラムで多くの同様の問題をチェックしています。また、私は自分のログイン方法をベースに移行したくない。

コード：

LoginTest.cs

using test_TestAutomation.PageObjects; 
using NUnit.Framework;  

namespace test_TestAutomation.TestClasses 
{  
    class LoginTet 
    { 
     // public IWebDriver driver; 

     [Test] 
     public void LoginSuccessCheck() 
     {  
      LoginPage login = new LoginPage(); 
      login.LoginSuccess();  
     } 
    } 
} 

Base.cs

using OpenQA.Selenium; 
using OpenQA.Selenium.Chrome; 
using NUnit.Framework; 

namespace test_TestAutomation.TestClasses 
{ 
    class Base 
    {  
     public static IWebDriver driver;  
     [SetUp] 
     public void SetUp() 
     { 
      driver = new ChromeDriver(); 
      driver.Manage().Window.Maximize();          
     } 

     [Test] 
     public void OpenURL() 
     { 
      driver.Navigate().GoToUrl("http://www.example.com");  
     }  

     [TearDown]  
     public void TearDown() 
     { 
      driver.Close(); 

     } 
    } 
} 

LoginPage.cs

using OpenQA.Selenium; 
using OpenQA.Selenium.Support.PageObjects; 
using test_TestAutomation.TestClasses; 
namespace test_TestAutomation.PageObjects 
{   
    public class LoginPage 
    {  
     [FindsBy(How = How.Id, Using = "Email")] 
     public IWebElement LoginEmailTxtLocator; 

     [FindsBy(How = How.Id, Using = "Password")] 
     public IWebElement LoginPasswordTxtLocator; 

     [FindsBy(How = How.CssSelector, Using = "#loginForm > div > div > form > div:nth-child(5) > div > input")] 
     private IWebElement BtnLogin;  

     public LoginPage() 
     {  
      PageFactory.InitElements(Base.driver, this); 
     } 

     public LoginPage LoginSuccess() 
     {    
      LoginEmailTxtLocator.SendKeys("emailtest@gmail.com"); 
      LoginPasswordTxtLocator.SendKeys("xxxxxxx"); 
      BtnLogin.Click(); 
      return this; 
     }  
    } 
} 

例外：

結果メッセージ： System.ArgumentExceptionの：ロケータオブジェクトのSearchContextが

Stackstace nullにすることはできません。

at OpenQA.Selenium.Support.PageObjects.PageFactory.InitElements(Object page, IElementLocator locator, IPageObjectMemberDecorator decorator) 
at OpenQA.Selenium.Support.PageObjects.PageFactory.InitElements(ISearchContext driver, Object page) 

Answer 1

私はあなたが展開することをお勧めしますテストOpenURLBaseからLoginTestまで設定してくださいベースでn。その後、をBaseから継承させます。あなたのケースで

Base.cs

using OpenQA.Selenium; 
using OpenQA.Selenium.Chrome; 
using NUnit.Framework; 

namespace test_TestAutomation.TestClasses 
{ 
    public class Base 
    { 
     public static IWebDriver driver; 

     [SetUp] 
     public void SetUp() 
     { 
      driver = new ChromeDriver(); 
      driver.Manage().Window.Maximize(); 
     } 

     [TearDown] 
     public void TearDown() 
     { 
      driver.Close(); 
     } 
    } 
} 

LoginTest.cs

​​

LoginPage.cs

using OpenQA.Selenium; 
using OpenQA.Selenium.Support.PageObjects; 
using test_TestAutomation.TestClasses; 

namespace test_TestAutomation.PageObjects 
{ 
    public class LoginPage 
    { 
     [FindsBy(How = How.Id, Using = "Email")] 
     public IWebElement LoginEmailTxtLocator; 

     [FindsBy(How = How.Id, Using = "Password")] 
     public IWebElement LoginPasswordTxtLocator; 

     [FindsBy(How = How.CssSelector, Using = "#loginForm > div > div > form > div:nth-child(5) > div > input")] 
     private IWebElement BtnLogin; 

     public LoginPage() 
     { 
      PageFactory.InitElements(Base.driver, this); 
     } 

     public LoginPage LoginSuccess() 
     { 
      LoginEmailTxtLocator.SendKeys("emailtest@gmail.com"); 
      LoginPasswordTxtLocator.SendKeys("xxxxxxx"); 
      BtnLogin.Click(); 
      return this; 
     } 
    } 
}