java.lang.Exception : Test class should have exactly one public zero-argument constructor:

Question

我有一个类:函数库，我在构造函数中实例化 webdriver 实例，如下所示

public class FunctionLibrary {
    public WebDriver driver;

    public FunctionLibrary(WebDriver driver)
    {
        driver = new FirefoxDriver();
        this.driver=driver;
    }

    public WebDriver getDriver(){
        return this.driver;
    }
}

我正在访问扩展父类(super class)的子类中的 webdriver 实例:函数库

public class Outlook extends FunctionLibrary{
    public Outlook(WebDriver driver) {
        super(driver);      
    }

    @Before
    public void testSetUp()
    {
        getDriver().navigate().to("https://google.com");
    }

    @After
    public void closeTest()
    {
        getDriver().close();
    }

    @Test
    public void openOutlookAndCountTheNumberOfMails()
    {
        System.out.println("executed @Test Annotation");        
    }
}

当我执行上面的junit代码时我收到错误为

java.lang.Exception: Test class should have exactly one public zero-argument constructor

任何人都可以告诉我哪里出错了

Answer 1

不需要将参数传递到FunctionLibrary的构造函数中，因为您只需覆盖它的值即可:

public class FunctionLibrary {
    public WebDriver driver;

    public FunctionLibrary()
    {
        this.driver=new FirefoxDriver();
    }

    // etc.
}

进行此更改意味着您不需要从测试类传递参数:只需删除其构造函数即可。