执行Selenium脚本时出错- java.lang.NullPointerException - TestNG
执行Selenium脚本时出错- java.lang.NullPointerException - TestNG
提问于 2018-07-30 02:03:59
我正在尝试通过testNG运行脚本。但是让java.lang.NullPointerException. .。我已经在BeforeMethod中输入了驱动程序初始化代码，其余代码正在测试中。请让我知道我的脚本出了什么问题，因为我提前得到了error.Thanks。
我的脚本：
public class NewTest {
WebDriver driver = null;
@BeforeMethod
public void beforeMethod() {
System.setProperty("webdriver.chrome.driver", Constants.Chrome_Driver);
WebDriver driver = new ChromeDriver();
driver.manage().window().maximize();
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
driver.get("http://" + Constants.auth_Username + ":" + Constants.auth_Password + "@" + Constants.URL);
}
@Test
public void f() throws InterruptedException {
actions.Admin_Login.txbx_aUsername(driver).sendKeys(Constants.aUsername);
actions.Admin_Login.txbx_aPassword(driver).sendKeys(Constants.aPassword);
actions.Admin_Login.btn_login(driver).click();
actions.create(driver).click();
Actions action = new Actions(driver);
action.moveToElement(actions.create.list(driver)).build().perform();
actions.create_list.list_category(driver).click();
actions.create_list.list_ceate_category(driver).click();
actions.create_list.txtbx_Cat_tile(driver).sendKeys(Constants.list_title);
actions.create_list.btn_Cat_Save(driver).click();
System.out.println("List Created Successfully");
}
}我正在使用PageObjects获取数据。这个脚本在没有testNG的情况下运行得很好。但是当我将测试转换成testNG并执行时，它抛出了错误。
我面临的错误：
java.lang.NullPointerException
at actions.Admin_Login.txbx_aUsername(Admin_Login.java:13)
at testScripts.NewTest.f(NewTest.java:43)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:124)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:580)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:716)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:988)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
at org.testng.TestRunner.privateRun(TestRunner.java:648)
at org.testng.TestRunner.run(TestRunner.java:505)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415)
at org.testng.SuiteRunner.run(SuiteRunner.java:364)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1137)
at org.testng.TestNG.runSuites(TestNG.java:1049)
at org.testng.TestNG.run(TestNG.java:1017)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)常量类：
public class Constants {
public static final String URL_Shika = "url";
public static final String list_Title = "Test";
public static final String aUsername = "Test";
public static final String aPassword = "abcd123";
public static final String uUsername = "Test01";
public static final String uPassword = "abcd123";
public static final String vUsername = "test321";
public static final String vPassword = "abcd123";
public static final String auth_Username = "admin";
public static final String auth_Password = "admin@123";
public static final String FF_Driver = "/path/geckodriver";
public static final String Chrome_Driver = "/path/chromedriver";
}操作类：
public class Admin_Login {
private static WebElement element = null;
public static WebElement txbx_aUsername (WebDriver driver) {
element = driver.findElement(By.id("username"));
return element;
}
public static WebElement txbx_aPassword (WebDriver driver) {
element = driver.findElement(By.id("password"));
return element;
}
}回答 1
Stack Overflow用户
回答已采纳
发布于 2018-07-30 08:38:00
您在@BeforeMethod中初始化的驱动程序对象在您的测试方法中不可见。尝试以下操作：
public class NewTest {
WebDriver driver = null;
@BeforeMethod
public void beforeMethod() {
System.setProperty("webdriver.chrome.driver", Constants.Chrome_Driver);
//Pay close attention this below line. Notice how we are not creating a new WebDriver variable
//but we are just initialising the class level data member here
driver = new ChromeDriver();
driver.manage().window().maximize();
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
driver.get("http://" + Constants.auth_Username + ":" + Constants.auth_Password + "@" + Constants.URL);
}
@Test
public void f() throws InterruptedException {
Admin_Login.txbx_aUsername(driver).sendKeys(Constants.aUsername);
Admin_Login.txbx_aPassword(driver).sendKeys(Constants.aPassword);
Admin_Login.btn_login(driver).click();
actions.create(driver).click();
Actions action = new Actions(driver);
action.moveToElement(actions.create.list(driver)).build().perform();
//Create a Course Category
actions.create_list.list_category(driver).click();
actions.create_list.list_ceate_category(driver).click();
actions.create_list.txtbx_Cat_tile(driver).sendKeys(Constants.list_title);
actions.create_list.btn_Cat_Save(driver).click();
System.out.println("List Created Successfully");
}
}请尝试等待文本框出现，然后使用以下代码输入任何数据：
public static WebElement txbx_aUsername (WebDriver driver) {
WebDriverWait w = new WebDriverWait(driver, 30);
w.until(ExpectedConditions.visibilityOfElementLocated(By.id("username")));
return driver.findElement(By.id("username"));
}如果你仍然面临任何问题，请告诉我。
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原文链接：
https://stackoverflow.com/questions/51583124
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