Java-8 – always use cube-java8 to get exception “wrong type of constant pool index”
I am designing a sample project for Java 8 dialect My problem is that I didn't get it running I always get the following exception hierarchy:
Tests run: 1,Failures: 0,Errors: 1,Skipped: 0,Time elapsed: 0.068 sec <<< FAILURE! - in soy.wimmer.CucumberIT
Feature: Cucumber with Java8 Time elapsed: 0.051 sec <<< ERROR!
cucumber.runtime.CucumberException: Failed to instantiate class soy.wimmer.CucumberStepdefs
[…]
Caused by: java.lang.reflect.InvocationTargetException: null
[…]
Caused by: cucumber.runtime.CucumberException: java.lang.IllegalArgumentException: Wrong type at constant pool index
[…]
Caused by: java.lang.IllegalArgumentException: Wrong type at constant pool index
at sun.reflect.ConstantPool.getMemberRefInfoAt0(Native Method)
at sun.reflect.ConstantPool.getMemberRefInfoAt(ConstantPool.java:47)
at cucumber.runtime.java8.ConstantPoolTypeIntrospector.getTypeString(ConstantPoolTypeIntrospector.java:37)
at cucumber.runtime.java8.ConstantPoolTypeIntrospector.getGenericTypes(ConstantPoolTypeIntrospector.java:27)
at cucumber.runtime.java.Java8StepDeFinition.<init>(Java8StepDeFinition.java:45)
at cucumber.runtime.java.JavaBackend.addStepDeFinition(JavaBackend.java:162)
at cucumber.api.java8.En.Given(En.java:190)
at soy.wimmer.CucumberStepdefs.<init>(CucumberStepdefs.java:8)
[…]
Results :
Tests in error:
Failed to instantiate class soy.wimmer.CucumberStepdefs
Tests run: 1,Skipped: 0
I don't know why I got this mistake or how to solve it
I packed everything in the Maven project The layout is as follows:
./src/test/java/soy/wimmer/CucumberIT.java ./src/test/java/soy/wimmer/CucumberStepdefs.java ./src/test/resources/cucumber/cucumber-java8.feature ./pom.xml
I'm in POM The dependencies contained in XML are:
<dependencies>
<dependency>
<groupId>info.cukes</groupId>
<artifactId>cucumber-java8</artifactId>
<version>1.2.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>info.cukes</groupId>
<artifactId>cucumber-junit</artifactId>
<version>1.2.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
In addition, POM XML loads only compilers and fail safe plug-ins
My cumberit Java definition:
package soy.wimmer;
import cucumber.api.CucumberOptions;
import cucumber.api.junit.Cucumber;
import org.junit.runner.RunWith;
@RunWith(Cucumber.class)
@CucumberOptions(features = "classpath:cucumber")
public class CucumberIT {
}
My function definition:
Feature: Cucumber with Java8
As a developer
I want to use Cucumber-java8
So that I have nicer step deFinitions
Scenario: Let's try it
Given I have some dummy code
When I try to test it
Then it should work with cucumber-java8
This is my step definition:
package soy.wimmer;
import cucumber.api.PendingException;
import cucumber.api.java8.En;
public class CucumberStepdefs implements En {
public CucumberStepdefs() {
Given("^I have some dummy code$",() -> {
// Write code here that turns the phrase above into concrete actions
throw new PendingException();
});
When("^I try to test it$",() -> {
// Write code here that turns the phrase above into concrete actions
throw new PendingException();
});
Then("^it should work with cucumber-java(\\d+)$",(Integer arg1) -> {
// Write code here that turns the phrase above into concrete actions
throw new PendingException();
});
}
}
Any idea what I did wrong here?
resolvent
Solution
This problem is because the cucumber dialect of Java 8 uses the implementation details of Oracle JDK 8
I am using Debian packaged openjdk 8, which leads to constant pools of different organizations When I tried to match Oracle's JDK 8, everything worked as expected
If you want to try it yourself, I'm at GitHub: https://github.com/mawis/cucumber-java8-test The complete sample project is published on
I also reported an error in the cucumber JVM's problem Tracker: https://github.com/cucumber/cucumber-jvm/issues/912
You can check the problem tracker to see if it will fix the problem later
Now, if you want to use cucumber - Java 8, you seem to have to use Oracle's JDK implementation
(the reputation for solving this problem belongs to hoger. I just want to summarize his comments on this problem.)
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