Inconvertible types; cannot cast 'io.cucumber.java.Scenario' to 'cucumber.runtime.ScenarioImpl' - cucumber

Question

I've updated my Cucumber version to 5.4.2 and this piece of code stopped working due to a Inconvertible types; cannot cast 'io.cucumber.java.Scenario' to 'cucumber.runtime.ScenarioImpl' error.
Field field = FieldUtils.getField((scenario).getClass(), "stepResults", true);
Any way I could get it back to working?
This is the whole piece of code as per this SO post
private static String logError(Scenario scenario) {
Field field = FieldUtils.getField((scenario).getClass(), "stepResults", true);
if (field != null) {
field.setAccessible(true);
try {
ArrayList<Result> results = (ArrayList<Result>) field.get(scenario);
for (Result result : results) {
if (result.getErrorMessage() != null)
if (result.getErrorMessage().length() >= 10000) {
return FAILED_COMMENT + "\n" + result.getErrorMessage().substring(0, 10000);
} else {
return FAILED_COMMENT + "\n" + result.getErrorMessage();
}
}
} catch (Exception e) {
return FAILED_COMMENT;
}
}
return FAILED_COMMENT;
}
Many thanks.

Answer 1

By using reflection to reach into a frameworks internals you're depending on implementation details. This is a bad practice, when ever the framework changes its implementation your code may break.
Hooks in Cucumber are designed to manipulate the test execution context before and after a scenario. They're not made to report on the test execution itself. Reporting is cross cutting concern and best managed by using the plugin system.
For example:
package com.example;
import io.cucumber.plugin.ConcurrentEventListener;
import io.cucumber.plugin.event.EventPublisher;
import io.cucumber.plugin.event.Result;
import io.cucumber.plugin.event.Status;
import io.cucumber.plugin.event.TestCase;
import io.cucumber.plugin.event.TestCaseFinished;
public class MyTestListener implements ConcurrentEventListener {
#Override
public void setEventPublisher(EventPublisher publisher) {
publisher.registerHandlerFor(TestCaseFinished.class, this::handleTestCaseFinished);
}
private void handleTestCaseFinished(TestCaseFinished event) {
TestCase testCase = event.getTestCase();
Result result = event.getResult();
Status status = result.getStatus();
Throwable error = result.getError();
String scenarioName = testCase.getName();
String id = "" + testCase.getUri() + testCase.getLine();
System.out.println("Testcase " + id + " - " + status.name());
}
}
When using JUnit 4 and TestNG you can activate this plugin using:
#CucumberOptions(plugin="com.example.MyTestListener")
With JUnit 5 you add it to junit-platform.properties:
cucumber.plugin=com.example.MyTestListener
Or if you are using the CLI
--plugin com.example.MyTestListener