Java (Selenium) - 用于初始化子类的超类构造函数

Question

PageOne<\/code> and PageTwo<\/code> both need to make use of MasterPage<\/code> methods (eg click Ok). I'm trying to initialize both pages within the constructor of MasterPage<\/code> . IntelliJ tells me to either add super(driver) to the Page1<\/code> \/ Page2<\/code> constructors, or to add a no arg constructor to master. In both cases, the tests can't run. with a super(driver) constructor, the pages fail to initialize, and in the no arg constructor, the clickOk()<\/code> method fails when called from the Page1\/Page2 method.

public class MasterPage {

    private WebDriver driver;
    public Page1 p1;
    public Page2 p2;

    public MasterPage(WebDriver driver) {
        this.driver = driver;
        p1 = new Page1(driver);
        p2 = new Page2(driver);
        PageFactory.initElements(driver, this);
    }

    @FindBy(id = "OkBtn")
    private WebElement okBtn;

    public void clickOk() {
        okBtn.click();
    }
}

Answer 1

First of all, MasterPage shouldn't know about page1 and page2 , it's their base class. You also don't need driver in each one of the derived Page , you can hold it in the parent MasterPage .

The problem is MasterPage constructor receives WebDriver parameter, but you don't have call to super(driver) in the derived classes constructors.

I also suggest each method which navigates the test to the another page will return this new page

MasterPage:

public class MasterPage { // can be abstract

    protected WebDriver driver;

    public MasterPage(WebDriver driver) {
        this.driver = driver;
        PageFactory.initElements(driver, this);
    }

    @FindBy(id = "OkBtn")
    private WebElement okBtn;

    protected void clickOk() {
        okBtn.click();
    }
}

Page1:

public class Page1 extends MasterPage {

    public Page1(WebDriver driver) {
        super(driver);
    }

    @FindBy(id="field")
    private WebElement elementOne;

    public Page2 completePageAndGoToPageTwo() {
        elementOne.click();
        clickOk();
        return new Page2(driver);
    }
}

Page2:

public class Page2 extends MasterPage {

    public Page2(WebDriver driver) {
        super(driver);
    }

    @FindBy (id="field")
    private WebElement elementTwo;

    public void completePageTwo() {
        elementTwo.click();
        clickOk();
    }
}

Page1Steps:

public class Page1Steps {

    public void testMethod() {
        Page1 pageOne = new Page1(driver);
        pageOne
            .completePageAndGoToPageTwo()
            .completePageTwo();
    }
}

Answer 2

On page1, last line of code return new Page2(driver); it puts null instead of driver everytime i try to match arguments. Any quick fix?