Unit testing EE9 app for Payara 5

Technical Discussion
1

I’m building Unit tests for my EE9 application, and I would like to use the same libraries as the platform I run the app on (Payara 5). To do this, I’ve included payara-embedded-all as a test dependency.

When testing e.g. JsonB, calling JsonbBuilder.create() gives an exception: class org.eclipse.yasson.JsonBindingProvider cannot be cast to class jakarta.json.bind.spi.JsonbProvider.
This is due to the included provider implementing javax.json.bind.spi.JsonbProvider, not jakarta.json.bind.spi.JsonbProvider.

What is the intended way to solve this issue?

2

Hi @RInnovalor,

If you could share a small reproducer app, it would help us investigate this problem and help provide you with a resolution. Can you provide a simple to follow scenario how to reproduce this on the latest release of Payara Community Edition? A reproducer should ideally follow the SSCCE rules: http://www.sscce.org/.

Thanks,
James

3

Hi @JamesHillyard ,

I’m not sure how to upload a sample project, so I’ll just past the relevant code as a comment.

Jakarta Rest Resource 
import jakarta.json.bind.JsonbBuilder;
import jakarta.ws.rs.DELETE;
import jakarta.ws.rs.Path;

@Path("/hello-world")
public class HelloResource {

    @DELETE
    public void testJsonB() {
        JsonbBuilder.create();
    }
}
Test Case 
import org.junit.jupiter.api.Test;

class HelloResourceTest {
    HelloResource helloResource = new HelloResource();

    @Test
    void testHelloResource() {
        helloResource.testJsonB();
    }
}
Pom.xml dependencies 
   <dependencies>
        <dependency>
            <groupId>jakarta.enterprise</groupId>
            <artifactId>jakarta.enterprise.cdi-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>jakarta.ws.rs</groupId>
            <artifactId>jakarta.ws.rs-api</artifactId>
            <version>3.0.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>jakarta.servlet</groupId>
            <artifactId>jakarta.servlet-api</artifactId>
            <version>5.0.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>jakarta.json.bind</groupId>
            <artifactId>jakarta.json.bind-api</artifactId>
            <version>2.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>5.8.2</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>5.8.2</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>fish.payara.extras</groupId>
            <artifactId>payara-embedded-all</artifactId>
            <version>5.2022.2</version>
        </dependency>
    </dependencies>

Running the test with this setup should give you the error I’m experiencing.

Thanks for your time helping me resolve this issue!

4

Hi @RInnovalor,

Thank for for providing that, no worries about uploading a project, those code snippets were easy to follow and I was able to reproduce the issue.

If you replace the jakarta.json.bind-api dependency with the JSON-B reference implementation, Yasson, this fixes your issue.

<dependency>
    <groupId>org.eclipse</groupId>
    <artifactId>yasson</artifactId>
    <version>3.0.0</version>
</dependency>

Thanks,
James