搜尋
首頁Java無法呼叫'com.aventstack.extentreports.ExtentTest.info(String)”,因為'extentlisteners.ExtentListeners.test”為空

在PHP开发中,我们经常会遇到各种问题和错误提示。其中一个常见的问题是“无法调用‘com.aventstack.extentreports.ExtentTest.info(String)’,因为‘extentlisteners.ExtentListeners.test’为空”。这个错误提示可能让人感到困惑,不知道如何解决。在本文中,php小编百草将为大家解析这个问题的原因,并提供解决方法,帮助大家顺利解决这个错误。

问题内容

我正在学习 selenium,主题是范围报告。现在,当我在框架中实现以前的代码时,我收到此错误。这段代码在重新启动 ide 后可以工作,但现在不再工作了。 这是我的代码。

基础测试文件:

package base;

import java.io.fileinputstream;
import java.io.filenotfoundexception;
import java.io.ioexception;
import java.sql.sqlexception;
import java.time.duration;
import java.util.properties;

import org.apache.log4j.propertyconfigurator;
import org.openqa.selenium.by;
import org.openqa.selenium.webdriver;
import org.openqa.selenium.chrome.chromedriver;
import org.openqa.selenium.firefox.firefoxdriver;
import org.openqa.selenium.support.ui.webdriverwait;
import org.testng.annotations.aftersuite;
import org.testng.annotations.beforesuite;
import org.testng.log4testng.logger;

import extentlisteners.extentlisteners;
import utilities.dbmanager;
import utilities.excelreader;
import utilities.monitoringmail;

public class basetest {
    
    public static webdriver driver;
    public static properties or = new properties();
    public static properties config = new properties();
    public static fileinputstream fis;
    public static excelreader excel = new excelreader("./src/test/resources/excel/testdata.xlsx");
    public static logger log = logger.getlogger(basetest.class);
    public static monitoringmail mail = new monitoringmail();
    public static webdriverwait wait;
    
    
    //findele finds the element based on the select type and enters the value : id/xpath/css
    public void type(string key, string value) {
        
        if(key.endswith("id")) {
            driver.findelement(by.id(or.getproperty(key))).sendkeys(value);;
        }else if(key.endswith("xpath")) {
            driver.findelement(by.xpath(or.getproperty(key))).sendkeys(value);
        }else if(key.endswith("css")) {
            driver.findelement(by.cssselector(or.getproperty(key))).sendkeys(value);
        }
        log.info("typing in an element : " + key + " , entered the values as : " + value);

        extentlisteners.test.info("typing in an element : " + key + " , entered the values as : " + value); //getting error on this line
        
    }
    
    //clickele clicks on the element based on the select type : id/xpath/css
    public void click(string key) {
        
        if(key.endswith("id")) {
            driver.findelement(by.xpath(or.getproperty(key))).click();
        }else if(key.endswith("xpath")) {
            driver.findelement(by.xpath(or.getproperty(key))).click();
        }else if(key.endswith("css")) {
            driver.findelement(by.xpath(or.getproperty(key))).click();
        }
        log.info("clicking on element : " + key);
        extentlisteners.test.info("clicking on element : " + key);
        
    }
    
    
    @beforesuite
    public void setup() {
        
        if(driver == null) {
            
            propertyconfigurator.configure("./src/test/resources/properties/log4j.properties"); //configuring log4j
            log.info("test execution started");
            
            
            try {
                fis = new fileinputstream("./src/test/resources/properties/config.properties"); //loading config file into fis
            } catch (filenotfoundexception e) {
                e.printstacktrace();
            } 
            try {
                config.load(fis); //loading fis to config properties
                log.info("config.properties file loaded");
            } catch (ioexception e) {
                e.printstacktrace();
            }
            
            
            try {
                fis = new fileinputstream("./src/test/resources/properties/or.properties"); //loading or file into fis
            } catch (filenotfoundexception e) {
                e.printstacktrace();
            } 
            try {
                or.load(fis); //loading fis to or properties
                log.info("config.properties file loaded");
            } catch (ioexception e) {
                e.printstacktrace();
            }
            
            
            //launching browser by checking which browser to launch from config file
            if(config.getproperty("browser").equals("chrome")){
                driver = new chromedriver();
                log.info("chrome browser launched");
            }
            else if(config.getproperty("browser").equals("firefox")){
                driver = new firefoxdriver();
                log.info("firefox browser launched");
            }
            
            
            //navigating to url provided in config file
            driver.get(config.getproperty("testsiteurl"));
            log.info("navigating to test site : " + config.getproperty("testsiteurl"));
            
            
            //maximizing browser window
            driver.manage().window().maximize();
            
            //applying implicit wait
            driver.manage().timeouts().implicitlywait(duration.ofseconds(integer.parseint(config.getproperty("implicit.wait"))));
            
            //applying explicit wait
            wait = new webdriverwait(driver, duration.ofseconds(integer.parseint(config.getproperty("explicit.wait"))));
            
            
            //jdbc connection
            try {
                dbmanager.setmysqldbconnection();
                log.info("database connection established");
            } catch (classnotfoundexception e) {
                // todo auto-generated catch block
                e.printstacktrace();
            } catch (sqlexception e) {
                // todo auto-generated catch block
                e.printstacktrace();
            }
        }
        
    }
    
    @aftersuite
    public void teardown() {
        driver.quit();
        log.info("test execution completed");
    }

}

登录测试文件:

package testcases;

import org.testng.annotations.dataprovider;
import org.testng.annotations.test;

import base.basetest;

public class logintest extends basetest {
    
    @test(dataprovider = "data")
    public void dologin(string username, string password) {
        
        type("username_id",username);
        type("password_id",password);
        click("loginbtn_xpath");
        
    }
    
    @dataprovider(name="data")
    public object[][] getdata() {
        
        string sheetname = "logintest";
        int rownum = excel.getrowcount(sheetname);
        int colnum = excel.getcolumncount(sheetname);
        
        excel.getcelldata(sheetname, colnum, rownum);
        
        object[][] data = new object[rownum-1][colnum];
        int row,col;
        for(row=2;row<=rownum;row++){
            for(col=0;col<colnum;col++){
                data[row-2][col]=excel.getcelldata(sheetname, col, row);
            }
        }
        return data;
        
    }

}

范围监听器:

package extentlisteners;

import java.util.date;

import org.testng.isuite;
import org.testng.isuitelistener;
import org.testng.itestcontext;
import org.testng.itestlistener;
import org.testng.itestresult;

import com.aventstack.extentreports.extentreports;
import com.aventstack.extentreports.extenttest;
import com.aventstack.extentreports.status;
import com.aventstack.extentreports.markuputils.extentcolor;
import com.aventstack.extentreports.markuputils.markup;
import com.aventstack.extentreports.markuputils.markuphelper;



public class extentlisteners implements itestlistener, isuitelistener {

    static date d = new date();
    static string filename = "extent_" + d.tostring().replace(":", "_").replace(" ", "_") + ".html";

    private static extentreports extent = extentmanager
            .createinstance(".\\reports\\" + filename);

    public static extenttest test;
    
    

    public void onteststart(itestresult result) {

        test = extent
                .createtest(result.gettestclass().getname() + "     @testcase : " + result.getmethod().getmethodname());
    

    }

    public void ontestsuccess(itestresult result) {

        string methodname = result.getmethod().getmethodname();
        string logtext = "<b>" + "test case:- " + methodname.touppercase() + " passed" + "</b>";
        markup m = markuphelper.createlabel(logtext, extentcolor.green);
        test.pass(m);

    }

    public void ontestfailure(itestresult result) {
        

        ///test.fail(result.getthrowable().getmessage());
        /*try {
            extentmanager.capturescreenshot();
        } catch (ioexception e) {
            // todo auto-generated catch block
            e.printstacktrace();
        }*/
        string methodname=result.getmethod().getmethodname();
        string logtext="<b>"+"test case:- "+ methodname.touppercase()+ " failed"+"</b>";        
    
    

        //test.fail("<b><font color=red>" + "screenshot of failure" + "</font></b><br>",mediaentitybuilder.createscreencapturefrompath(extentmanager.filename)
        //      .build());
    
        
        markup m = markuphelper.createlabel(logtext, extentcolor.red);
        test.log(status.fail, m);
        
    }

    public void ontestskipped(itestresult result) {
        string methodname = result.getmethod().getmethodname();
        string logtext = "<b>" + "test case:- " + methodname + " skipped" + "</b>";
        markup m = markuphelper.createlabel(logtext, extentcolor.amber);
        test.skip(m);

    }

    public void ontestfailedbutwithinsuccesspercentage(itestresult result) {
        // todo auto-generated method stub

    }

    public void onstart(itestcontext context) {

    }

    public void onfinish(itestcontext context) {

        if (extent != null) {

            extent.flush();
        }

    }

    public void onstart(isuite suite) {
        // todo auto-generated method stub
        
    }

    public void onfinish(isuite suite) {
        // todo auto-generated method stub
        
    }

}

我尝试注释 extentlistener 行,它工作正常,因此提取数据或将数据插入到元素中没有问题。这段代码工作过一次,所以我很困惑为什么它不工作并抛出这个错误。

错误消息:

FAILED: testCases.LoginTest.doLogin("[email&#160;protected]", "kjsdfnvjndklsv")
java.lang.NullPointerException: Cannot invoke "com.aventstack.extentreports.ExtentTest.info(String)" because "extentlisteners.ExtentListeners.test" is null
at base.BaseTest.type(BaseTest.java:64)
at testCases.LoginTest.doLogin(LoginTest.java:13)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:139)
at org.testng.internal.invokers.TestInvoker.invokeMethod(TestInvoker.java:664)
at org.testng.internal.invokers.TestInvoker.invokeTestMethod(TestInvoker.java:227)
at org.testng.internal.invokers.MethodRunner.runInSequence(MethodRunner.java:50)
at org.testng.internal.invokers.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:957)
at org.testng.internal.invokers.TestInvoker.invokeTestMethods(TestInvoker.java:200)
at org.testng.internal.invokers.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:148)
at org.testng.internal.invokers.TestMethodWorker.run(TestMethodWorker.java:128)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.testng.TestRunner.privateRun(TestRunner.java:848)
at org.testng.TestRunner.run(TestRunner.java:621)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:443)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:437)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:397)
at org.testng.SuiteRunner.run(SuiteRunner.java:336)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:95)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1280)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1200)
at org.testng.TestNG.runSuites(TestNG.java:1114)
at org.testng.TestNG.run(TestNG.java:1082)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

解决方法

看来你的代码没有任何问题。

“extentlisteners.test”为 null 的原因可能仅与 onteststart 在测试之前没有运行有关。

确保您的侦听器已添加到 testng xml 中:

<!doctype suite system "http://testng.org/testng-1.0.dtd">
<suite name="mytestsuite">
    <listeners>
        <listener class-name="extentlisteners.extentlisteners"/>
    </listeners>
    <test name="mytest">
        <packages>
            <package name="testcases"/>
        </packages>
    </test>
</suite>

或者,如果您以编程方式创建套件,请不要忘记在其中添加侦听器:

TestNG testng = new TestNG();
    testng.setTestClasses(new Class[] { LoginTest.class });
    testng.addListener(new ExtentListener());
    testng.run();

此外,您可以在 onteststart 方法中的测试初始化​​行上设置断点,并在调试模式下执行测试以检查为其设置的值。

以上是無法呼叫'com.aventstack.extentreports.ExtentTest.info(String)”,因為'extentlisteners.ExtentListeners.test”為空的詳細內容。更多資訊請關注PHP中文網其他相關文章!

陳述
本文轉載於:stackoverflow。如有侵權,請聯絡admin@php.cn刪除

熱AI工具

Undresser.AI Undress

Undresser.AI Undress

人工智慧驅動的應用程序,用於創建逼真的裸體照片

AI Clothes Remover

AI Clothes Remover

用於從照片中去除衣服的線上人工智慧工具。

Undress AI Tool

Undress AI Tool

免費脫衣圖片

Clothoff.io

Clothoff.io

AI脫衣器

Video Face Swap

Video Face Swap

使用我們完全免費的人工智慧換臉工具,輕鬆在任何影片中換臉!

熱工具

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser是一個安全的瀏覽器環境,安全地進行線上考試。該軟體將任何電腦變成一個安全的工作站。它控制對任何實用工具的訪問,並防止學生使用未經授權的資源。

PhpStorm Mac 版本

PhpStorm Mac 版本

最新(2018.2.1 )專業的PHP整合開發工具

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

這個專案正在遷移到osdn.net/projects/mingw的過程中,你可以繼續在那裡關注我們。 MinGW:GNU編譯器集合(GCC)的本機Windows移植版本,可自由分發的導入函式庫和用於建置本機Windows應用程式的頭檔;包括對MSVC執行時間的擴展,以支援C99功能。 MinGW的所有軟體都可以在64位元Windows平台上運作。

MantisBT

MantisBT

Mantis是一個易於部署的基於Web的缺陷追蹤工具,用於幫助產品缺陷追蹤。它需要PHP、MySQL和一個Web伺服器。請查看我們的演示和託管服務。

VSCode Windows 64位元 下載

VSCode Windows 64位元 下載

微軟推出的免費、功能強大的一款IDE編輯器