Question

测试步骤

public class MilacronSmoke {
        WebDriver driver;
        @Given("^open firefox and start application$")
        public void open_firefox_and_start_application() throws Throwable {
            driver=new FirefoxDriver();
            driver.manage().timeouts().implicitlyWait(40, TimeUnit.SECONDS);
            driver.get("https://example.com");

        }
    **Scenario 1**
        @When("^I click on Login$")
        public void I_click_on_Login() throws Throwable {
            driver.findElement(By.xpath("//a[contains(.,'Login')]")).click();

        }

        @When("^enter valid \"([^\"]*)\" and valid \"([^\"]*)\"$")
        public void enter_valid_and_valid(String uname, String pass) throws Throwable {
            driver.findElement(By.id("Username")).sendKeys(uname);
            driver.findElement(By.id("Password")).sendKeys(pass);

        }

        @Then("^Click on login and User should be able to login successfully$")
        public void Click_on_login_and_User_should_be_able_to_login_successfully() throws Throwable {
            driver.findElement(By.id("loginUser")).click();

        }

        **Scenario 2:**
        @Given("^Click on shop for carts$")
        public void Click_on_shop_for_carts() throws Throwable {

            driver.findElement(By.xpath("//span[text()='Shop for Parts']")).click();

        }

        @Given("^select plates$")
        public void select_plates() throws Throwable {
            driver.findElement(By.xpath("//a[contains(.,'Plates ')]")).click();

        }


        @When("^I click on drsired product$")
        public void I_click_on_drsired_product() throws Throwable {
            driver.findElement(By.xpath("//a[@data-itemnumber='PLT01096096046']")).click();
        }

        @When("^click on item increment$")
        public void click_on_item_increment() throws Throwable {
            WebElement ele=driver.findElement(By.xpath("//i[contains(@class,'fa fa-caret-up')]"));
            for(int i=0;i<=3;i++)
            {
                ele.click();
            }

        }

        @When("^Click on buy now$")
        public void Click_on_buy_now() throws Throwable {
            driver.findElement(By.xpath("//button[contains(.,'Buy Now')]")).click();

        }

        @Then("^Product should be added to the cart successfully$")
        public void Product_should_be_added_to_the_cart_successfully() throws Throwable {


        }

功能文件 特征：测试米拉克朗烟雾情景

 Scenario: Test login with valid credentials
    Given open firefox and start application
    When I click on Login
    And enter valid "sshankar@genalpha.com" and valid "passw0rd"
    Then Click on login and User should be able to login successfully


    Scenario: Test shop for cart
    Given Click on shop for carts
    And select plates
    When I click on drsired product 
    And click on item increment 
    And Click on buy now
    Then Product should be added to the cart successfully

测试跑步者

@RunWith(Cucumber.class)
@Cucumber.Options(features="features",glue={"steps"})
public class TestRunnr {

当我运行这个黄瓜脚本时，它抛出一个NullPointer异常：

java.lang.NullPointerException
    at steps.MilacronSmoke.Click_on_shop_for_carts(MilacronSmoke.java:47)
    at ?.Given Click on shop for carts(MyApplication.feature:11)

第一种情况是成功执行，但第二种情况没有执行。我登录电子商务网站，尝试点击购买零件。

Answer 1

每个方案都会创建所有步骤定义的新实例。在您的情况下，您在Given step public void open_firefox_and_start_application()中实例化驱动程序，以便第一个方案成功。现在对于第二个场景，你的类的一个新实例有一个为null的webdriver，你没有调用前一步来实例化它。

您可以使用静态Web驱动程序，但是您将遇到并行测试的问题。如果您计划并行测试，请查找ThreadLocal以确保您的webdriver已附加到特定线程。

另一种方法是将登录测试移动到单独的文件中。对于其他方案，将登录步骤移至Background黄瓜标记。这样，webdriver将针对每个场景进行实例化。但是您需要决定是否要在各个方案中保持登录状态，删除cookie或为每个方案删除新浏览器。

黄瓜在特征文件中给出具有多个场景的空指针异常

1 个答案: