Report builder says Cucumber is not a valid report - selenium-webdriver

Question

I have used below code for creating html reports , this code is present in after class of Junit Runner in a cucumber framework , but am getting error saying cucumber.json is not a valid cucumber report. I am assuming that report builder is trying to get the cucumber.json even before it is created completely,
I kept code in cucumber options to create Json file
#CucumberOptions(features = "features/",
glue = { "report"},
format = {"pretty","json:target/cucumber.json"},
tags = {"#testing" }, monochrome = true)
private void generateReportForJsonFiles(File reportOutputDirectory,
List<String> jsonFiles) {
String jenkinsBasePath = "";
String buildNumber = "1";
String projectName = project.getName();
Configuration configuration = new Configuration(reportOutputDirectory, projectName);
configuration.setParallelTesting(false);
configuration.setJenkinsBasePath(jenkinsBasePath);
configuration.setRunWithJenkins(false);
configuration.setBuildNumber(buildNumber);
ReportBuilder reportBuilder = new ReportBuilder(jsonFiles, configuration);
reportBuilder.generateReports();
}
Below is the error:
File 'target/cucumber.json' is not proper Cucumber report!

Answer 1

you should provide a small example (MCVE) which others can use to reproduce your problem
your code snippet configuration.setParallelTesting(false) and your answer cucumber report version is <version>4.2.0</version> do not match, as the method configuration.setParallelTesting was removed in version 4.1.0
Have a look at this small working snippet (based on the few information you provided).
Assume the following structure
pom.xml
src/main/java/CreateReport.java
src/main/resources/log4j2.properties
src/test/java/TestRunner.java
src/test/java/stepdefs/StepDefinitions.java
src/test/resource/features/demo.feature
pom.xml
...
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.target>1.8</maven.compiler.target>
<!--
info.cukes:cucumber-java:1.2.5 is quite old and has been superseded by
io.cucumber:cucumber-java see: https://mvnrepository.com/artifact/io.cucumber/cucumber-java
-->
<version.cucumber>1.2.5</version.cucumber>
</properties>
<dependencies>
<dependency>
<groupId>info.cukes</groupId>
<artifactId>cucumber-java</artifactId>
<version>${version.cucumber}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>info.cukes</groupId>
<artifactId>cucumber-junit</artifactId>
<version>${version.cucumber}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>net.masterthought</groupId>
<artifactId>cucumber-reporting</artifactId>
<version>4.0.0</version>
</dependency>
</dependencies>
...
CreateReport.java
import java.io.File;
import java.util.Arrays;
import java.util.List;
import net.masterthought.cucumber.Configuration;
import net.masterthought.cucumber.ReportBuilder;
public class CreateReport {
private void generateReportForJsonFiles(File reportOutputDirectory, List<String> jsonFiles) {
String buildNumber = "1";
String projectName = "StackOverflow example";
Configuration configuration = new Configuration(reportOutputDirectory, projectName);
configuration.setParallelTesting(false);
// configuration.setJenkinsBasePath(jenkinsBasePath);
configuration.setRunWithJenkins(false);
configuration.setBuildNumber(buildNumber);
ReportBuilder reportBuilder = new ReportBuilder(jsonFiles, configuration);
reportBuilder.generateReports();
}
public static void main(String[] args) {
new CreateReport().generateReportForJsonFiles(new File("target/"),
Arrays.asList("target/cucumber.json"));
}
}
log4j2.properties
status = info
name = PropertiesConfig
appenders = console
appender.console.type = Console
appender.console.name = STDOUT
appender.console.layout.type = PatternLayout
appender.console.layout.pattern = [%level] %m%n
rootLogger.level = info
rootLogger.appenderRefs = stdout
rootLogger.appenderRef.stdout.ref = STDOUT
TestRunner.java
import org.junit.runner.RunWith;
import cucumber.api.CucumberOptions;
import cucumber.api.junit.Cucumber;
#RunWith(Cucumber.class)
#CucumberOptions(
features = {"src/test/resource/features"},
glue = {"stepdefs"},
plugin = {"json:target/cucumber.json"}
)
public class TestRunner {
}
StepDefinitions.java
package stepdefs;
import org.junit.Assert;
import cucumber.api.java.en.Given;
public class StepDefinitions {
#Given("^a successful step$")
public void aSuccessfulStep() throws Throwable {
System.out.println("a successful step");
}
#Given("^a not successful step$")
public void aNotSuccessfulStep() throws Throwable {
System.out.println("a not successful step");
Assert.fail();
}
}
demo.feature
Feature: Test cucumber reporting plugin
Scenario: Run a non failing scenario
Given a successful step
Scenario: Run a failing scenario
Given a not successful step
run the Cucumber test (this creates the target/cucumber.json file)
$ mvn clean test
run the report creator (
$ mvn exec:java -Dexec.mainClass=CreateReport
...
12:55:21 [INFO] --- exec-maven-plugin:1.6.0:java (default-cli) # cuke-test23.so ---
Dec 18, 2018 12:55:22 PM net.masterthought.cucumber.ReportParser parseJsonFiles
INFO: File 'target/cucumber.json' contains 1 features
the report is generated in target/cucumber-html-reports/overview-features.html