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Cucumber for the JVM
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cucumber.runtime.CucumberException: java.lang.NullPointerException #1878

Closed busekaya closed 4 years ago

busekaya commented 4 years ago

Hi, I am using to execute my selenium test with Cucumber, Maven and TestNG and Appium. When i started this automation by using TestNG via TestNG.xml. App launched but There is an error on running feature files selenium cucumber. I am getting the below error. Please help to resolve this error.

cucumber.runtime.CucumberException: java.lang.NullPointerException
    at cucumber.api.testng.TestNGCucumberRunner.runCucumber(TestNGCucumberRunner.java:69)
    at runner.RunnerTest.feature(RunnerTest.java:54)
    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:133)
    at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:584)
    at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:172)
    at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
    at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:804)
    at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:145)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
    at java.util.ArrayList.forEach(ArrayList.java:1257)
    at org.testng.TestRunner.privateRun(TestRunner.java:770)
    at org.testng.TestRunner.run(TestRunner.java:591)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:402)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:396)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:355)
    at org.testng.SuiteRunner.run(SuiteRunner.java:304)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1180)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1102)
    at org.testng.TestNG.runSuites(TestNG.java:1032)
    at org.testng.TestNG.run(TestNG.java:1000)
    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)
Caused by: java.lang.NullPointerException
    at com.odealMobile.Login.ClickLogin(Login.java:41)
    at ✽.When click on login button(src/main/java/features/Android/Login.feature:6)

Details of Plugins' Versions:

TestNG - 6.7 Cucumber - 1.2.6 Maven - 3.6.3 Appium - 1.15.1

My Test Class; 


package com.odealMobile;

import cucumber.api.java.en.And;
import cucumber.api.java.en.Given;
import cucumber.api.java.en.Then;
import cucumber.api.java.en.When;
import runner.RunnerTest;

import org.openqa.selenium.By;
import org.openqa.selenium.support.ui.ExpectedConditions;

public class Login extends RunnerTest{

        String loginButtonId = "login";
        String registerButtonId = "register";
        String TCKNId = "tckn";
        String passwordId = "password";
        String profileImageId = "profile_image_view";

        @Given("^odeal app is opened$")
        public void CheckOpenedPage(){

            System.out.print(By.id(loginButtonId));

            wait.until(ExpectedConditions.elementToBeClickable(By.id(loginButtonId)));
            //loginButtonId bekleniyor.
            wait.until(ExpectedConditions.elementToBeClickable(By.id(registerButtonId)));

        }
        @When("^click on login button$")
        public void ClickLogin() {

            // loginButtonId ye tıklanıyor.
            driver.findElement(By.id(loginButtonId)).click();
        }

        @Then("^login page will be opened$")
        public void CheckLoginPage() {

            wait.until(ExpectedConditions.elementToBeClickable(By.id(loginButtonId)));

        }
        @When("^user enters valid TCKN$")
        public void EnterTCKN() {

            driver.findElement(By.id(TCKNId)).click();

            driver.findElement(By.id(TCKNId)).setValue("23231487730");  

        }
        @And("^user enters valid password$")
        public void EnterPassword() {

            driver.findElement(By.id(passwordId)).click();

            driver.findElement(By.id(passwordId)).setValue("135246");
        }
        @And("^clicks on login button$") 
        public void ClickLoginonLoginPage() {

            driver.findElement(By.id(loginButtonId)).click();

        }
        @Then("^home page will be opened$")
        public void CheckHomePage(){

            wait.until(ExpectedConditions.elementToBeClickable(By.id(profileImageId)));

            if( driver.findElement(By.id(profileImageId)).isDisplayed()) {
                System.out.println("Login Success");
            }else {
                System.out.println("Login Failed");

            }

        }

}

My Runner Class;

package runner;

import cucumber.api.CucumberOptions;
import cucumber.api.testng.CucumberFeatureWrapper;  
import cucumber.api.testng.TestNGCucumberRunner;
import io.appium.java_client.AppiumDriver;
import io.appium.java_client.MobileElement;
import io.appium.java_client.android.AndroidDriver;
import java.net.URL;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.support.ui.WebDriverWait;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.DataProvider;  
import org.testng.annotations.Test;

@CucumberOptions(  
        plugin = {"pretty","json:target/report/cucumber2.json"},  
        features = {"src/main/java/features/Android/Login.feature"},  
        glue = {"com/odealMobile"} 

)  
public class RunnerTest{  

    public AppiumDriver<MobileElement> driver;
    public WebDriverWait wait;
    private TestNGCucumberRunner testNGCucumberRunner;  

  @BeforeClass(alwaysRun = true)  
    public void setUpClass() throws Exception {  

      DesiredCapabilities cap = new DesiredCapabilities();
      cap.setCapability("deviceName", "TestDevice-1");
      cap.setCapability("automationName", "UiAutomator2");
      cap.setCapability("udid", "emulator-5554");
      cap.setCapability("platformName", "Android");
      cap.setCapability("platformVersion", "10.0");
      //cap.setCapability("autoGrantPermissions", "true");
      cap.setCapability("noReset", "false");
      cap.setCapability("clearSystemFiles", "true");
      cap.setCapability("appPackage", "com.telera.merchant.stage.debug");
      cap.setCapability("appActivity", "com.telera.merchant.splash.SplashActivity");

      driver = new AndroidDriver<MobileElement>(new URL("http://127.0.0.1:4723/wd/hub"), cap);
      wait = new WebDriverWait(driver, 10);
      testNGCucumberRunner = new TestNGCucumberRunner(this.getClass());  

  }  

    @Test(groups = "Cucumber", description = "Runs Cucumber Feature", dataProvider = "features")  
    public void feature(CucumberFeatureWrapper cucumberFeature) {
        testNGCucumberRunner.runCucumber(cucumberFeature.getCucumberFeature());
    }

    @DataProvider  
  public Object[][] features() {  
        return testNGCucumberRunner.provideFeatures();  
  }  

    @AfterClass(alwaysRun = true)  
    public void tearDownClass() throws Exception { 
        Thread.sleep(50000);
        driver.quit();
        //testNGCucumberRunner.finish();  
  }  
}

My Pom.xml;

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>appium.mobile.test</groupId>
  <artifactId>odealMobile</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <name>Odeal Mobile</name>
  <description>Appium Testing for Mobile </description>

 <properties>

        <testng.version>6.7</testng.version>
        <cucumber.version>1.2.6</cucumber.version>

    </properties>

  <dependencies>

        <dependency>
           <groupId>info.cukes</groupId>
           <artifactId>cucumber-guice</artifactId>
           <version>1.2.6</version>
           <type>pom</type>
        </dependency>
        <dependency>
            <groupId>info.cukes</groupId>
            <artifactId>cucumber-html</artifactId>
            <version>0.2.3</version>
        </dependency>   
        <dependency>
            <groupId>info.cukes</groupId>
            <artifactId>cucumber-testng</artifactId>
            <version>${cucumber.version}</version>
        </dependency>  

        <!-- https://mvnrepository.com/artifact/info.cukes/cucumber-java -->
        <dependency>
           <groupId>info.cukes</groupId>
           <artifactId>cucumber-java</artifactId>
           <version>${cucumber.version}</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/info.cukes/cucumber-jvm -->
        <dependency>
          <groupId>info.cukes</groupId>
          <artifactId>cucumber-jvm</artifactId>
          <version>${cucumber.version}</version>
          <type>pom</type>
        </dependency>
        <dependency>
            <groupId>org.testng</groupId>
            <artifactId>testng</artifactId>
            <version>${testng.version}</version>
           <scope>test</scope>
        </dependency>         
        <dependency>
           <groupId>io.appium</groupId>
           <artifactId>java-client</artifactId>
           <version>7.3.0</version>
        </dependency>     
        <dependency>
           <groupId>org.seleniumhq.selenium</groupId>
           <artifactId>selenium-java</artifactId>
           <version>3.141.59</version>
       </dependency>
       <!-- https://mvnrepository.com/artifact/io.cucumber/tag-expressions -->
<dependency>
    <groupId>io.cucumber</groupId>
    <artifactId>tag-expressions</artifactId>
    <version>2.0.4</version>
</dependency>

   <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
    <version>3.9</version>
</dependency>

  </dependencies>

  <build>
        <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                <source>1.6</source>
                <target>1.6</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.18.1</version>
            </plugin>
        </plugins>
    </pluginManagement>
  </build>
</project>

My testng.xml;

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "https://testng.org/testng-1.0.dtd">
<suite name="Suite">
  <test thread-count="5" name="Test">
     <classes>
        <class name="runner.RunnerTest"/>
     </classes>
  </test> <!-- Test -->
</suite> <!-- Suite -->
mpkorstanje commented 4 years ago

While the initial line of the stack trace is rather misleading:

cucumber.runtime.CucumberException: java.lang.NullPointerException

this happens definitely in your own code.

Caused by: java.lang.NullPointerException
    at com.odealMobile.Login.ClickLogin(Login.java:41)
    at ✽.When click on login button(src/main/java/features/Android/Login.feature:6)

So please use the support forums for questions and discussions. We use GitHub issues to track bugs and feature requests exclusively.

Also worth noting that you are on a rather old version of Cucumber.