Question

开始测试时，我在Chrome地址栏中看到“ data：”。我正在用TestNG创建Maven项目，仅尝试打开google index页面

public class GetBrowser {

protected WebDriver driver;

@Parameters("browser")
@BeforeTest
protected WebDriver getDriver(String browser){
    if (browser.equals("chrome")){
        System.setProperty("webdriver.chrome.driver", "/home/user/IDEA/drivers/chromedriver");
        driver = new ChromeDriver();
    }
    else if (browser.equals("firefox")){
        System.setProperty("webdriver.gecko.driver", "/home/user/IDEA/drivers/geckodriver");
        driver = new FirefoxDriver();
    }
    driver.manage().window().maximize();
    driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
    return driver;
 }
}

public class OpenIndexPageTest extends GetBrowser {

@Test
public void openPage(){
    driver.get("https://www.google.com");
    String titleActual = driver.getTitle();
    String titleExpected = "Google";
    Assert.assertEquals(titleActual, titleExpected);
 }
}

我的testng.xml

<?xml version="1.0" encoding="UTF-8"?>
        <!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">

<suite name="ChromeTestExample">
     <test name="ChromeTest">
        <parameter name="browser" value="chrome"/>
        <packages>
            <package name="com.fozzy.autotest.*"/>
        </packages>
    </test>
</suite>

此外，我还从maven存储库（最新版本为org.testng和org.seleniumhq.selenium）的pom.xml中添加了依赖项

IDEA返回 java.lang.NullPointerException。而且我不知道问题出在哪里。

跟踪

Starting ChromeDriver 2.45.615279 (12b89733300bd268cff3b78fc76cb8f3a7cc44e5) on port 11290
Only local connections are allowed.
Dec 16, 2018 12:48:46 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: OSS
Starting ChromeDriver 2.45.615279 (12b89733300bd268cff3b78fc76cb8f3a7cc44e5) on port 15730
Only local connections are allowed.
Dec 16, 2018 12:48:47 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: OSS

java.lang.NullPointerException
    at com.fozzy.autotest.OpenIndexPageTest.openPage(OpenIndexPageTest.java:10)
    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:583)
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989)
    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.IDEARemoteTestNG.run(IDEARemoteTestNG.java:73)
    at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:123)

信息：
ChromeDriver 2.45（最新版本）
Selenium-java 3.141.59（最新发行版）
testng 6.14.3（最后一次不是beta版本）
java版本“ 1.8.0_191”
IDEA 2018.3.1（CE）

请帮助，谢谢！

Answer 1

问题出在您的测试代码上。您正在使用@BeforeTest注解实例化您的浏览器。 TestNG每个@BeforeTest标签仅运行一次<test>注释方法。

因此，如果您的程序包包含一个以上的测试类，则不会从第二个类开始到GetBrowser执行基类NullPointerException的驱动程序实例化逻辑。

请改用@BeforeClass或@BeforeMethod批注。

地址栏chromedriver中的“数据：”（带有testng的Maven项目）

1 个答案: