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java如何正确地重用在其他功能类中编写的方法？

1 年，4 月 Questions & Answers

我有两个功能文件（FeatureA和FeatureB）。这些功能文件中的前两个步骤完全相同，因此我只想编写一次实现，然后可以被其他功能文件重用

Feature A Given I use "<browser>" When I navigate to the "www.google.com" Then I will be able to do A

Feature B Given I use "<browser>" When I navigate to the "www.google.com" Then I will be able to do B

我有父类Base

public class Base { public LandingPage landingPage; public synchronized void initiate(String browser) { // Do usual Chrome / Firefox WebDriver instantiation this.landingPage = new LandingPage(); // Instantiate landingPage } public synchronized void navigateTo(String URL, Scenario scenario) throws InterruptedException { driver.get(URL); } }

我实现下面的Feature A

public class FeatureA extends Base { @Given("I use {string}") public void i_use(String browser) { initiate(browser, scenario); // Call the method in parent class Base. This should instantiate this.landingPage = new LandingPage(); } @When("I navigate to the {string}") public void i_navigate_to_the(String URL) throws InterruptedException { navigateTo(URL, scenario); } @Then("Then I will be able to do A") public void then_i_will_be_able_to_do_A() { //Do something specific to Feature A only } }

我实现了下面的Feature B。（我在Feature A中重新使用了步骤1和步骤2，因此不需要在Feature B中重复它）

public class FeatureB extends Base { @Then("Then I will be able to do B") public void then_i_will_be_able_to_do_B() { //Do something specific to Feature B only log.debug("landingpage : " + super.landingPage); // Null. Not sure why? } }

当我运行Feature A小黄瓜文件时，一切正常

当我运行Feature Bgherkin文件时，变量/reference super.landingPage返回我null

我运行调试模式，可以看到initiate(browser, scenario);已被调用，因此public LandingPage landingPage;已被其他类（Class FeatureA）实例化，在执行Feature B中的步骤之前。但是Class FeatureB看到null

那么，我如何使用功能A中的方法，并在功能B、C、D中重复使用它呢

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共 (1) 个答案

  1. # 1 楼答案

    您可以通过依赖注入来实现这一点。依赖项注入允许您编写较小组件的步骤定义，这些组件可以通过其他组件的构造函数注入

    最容易开始的是cucumber-picocontainer

    <dependencies>
  [...]
    <dependency>
        <groupId>io.cucumber</groupId>
        <artifactId>cucumber-picocontainer</artifactId>
        <version>${cucumber.version}</version>
        <scope>test</scope>
    </dependency>
  [...]
</dependencies>

    public class WebDriverContainer {

   private final Webdriver delegate;

   // Create webdriver instance here
   // as needed by invoking a method from your step definitions.
   // or something more advanced: https://github.com/cucumber/cucumber-jvm/tree/main/picocontainer#step-scope-and-lifecycle

   // note that before and after hooks can also be used here to do the clean up/setup.
}
public class FeatureA {

  private WebDriverContainer webdriver;

  public FeatureA(WebDriverContainer webdriver){
      this.webdriver = webdriver;
  }
  
  // Use webdriver container in your steps

}
public class FeatureB {

  private WebDriverContainer webdriver;

  public FeatureB(WebDriverContainer webdriver){
      this.webdriver = webdriver;
  }
  
  // Use webdriver container in your steps

}

    https://github.com/cucumber/cucumber-jvm/tree/main/picocontainer