Java Community | Help. Code. Learn.•7mo ago

JUnit, can I create an EntityManager or even a session without running the server?

import org.junit.Test;
import org.junit.jupiter.api.BeforeAll;
public class OrderTest {
    @PersistenceContext(unitName = "WebPU")
    private EntityManager em;

    @BeforeAll
    public static void setUpClass() {

    }
    @Test
    public boolean testOrderCreation() {
        List<Destination> destinationList = em.createQuery("SELECT dt FROM Destination dt WHERE dt.id=:id", Destination.class)
                .setParameter("id", 1).getResultList();
        Destination destination = destinationList.get(0);
        if (destinationList.size() != 1) {
           return false;
        }
        List<Product> productList = em.createQuery("SELECT pdt FROM Product pdt WHERE pdt.id=:id", Product.class)
                .setParameter("id", 1).getResultList();

        if (productList.size() != 1) {
             return false;
        }
        Product product = productList.get(0);

        Orders order = new Orders();
        order.setProductId(product);
        order.setDestination(destination);
        order.setQty(10);
        order.setCreatedAt(LocalDateTime.now());
        order.setExpectedDate(LocalDateTime.now().plusDays(5));
        order.setOrderStatus("not_shipped");
        em.persist(order);
        return true;
    }
}

import org.junit.Test;
import org.junit.jupiter.api.BeforeAll;
public class OrderTest {
    @PersistenceContext(unitName = "WebPU")
    private EntityManager em;

    @BeforeAll
    public static void setUpClass() {

    }
    @Test
    public boolean testOrderCreation() {
        List<Destination> destinationList = em.createQuery("SELECT dt FROM Destination dt WHERE dt.id=:id", Destination.class)
                .setParameter("id", 1).getResultList();
        Destination destination = destinationList.get(0);
        if (destinationList.size() != 1) {
           return false;
        }
        List<Product> productList = em.createQuery("SELECT pdt FROM Product pdt WHERE pdt.id=:id", Product.class)
                .setParameter("id", 1).getResultList();

        if (productList.size() != 1) {
             return false;
        }
        Product product = productList.get(0);

        Orders order = new Orders();
        order.setProductId(product);
        order.setDestination(destination);
        order.setQty(10);
        order.setCreatedAt(LocalDateTime.now());
        order.setExpectedDate(LocalDateTime.now().plusDays(5));
        order.setOrderStatus("not_shipped");
        em.persist(order);
        return true;
    }
}

33 Replies

JavaBot•7mo ago

⌛ This post has been reserved for your question.

Hey @Rag...JN 🌌 🦡 👽 💰! Please use /close or the Close Post button above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically closed after 300 minutes of inactivity.

TIP: Narrow down your issue to simple and precise questions to maximize the chance that others will reply in here.

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class OrderTestRunner {
    public static void main(String[] args) {
        Result result = JUnitCore.runClasses(OrderTest.class);
        for (Failure failure : result.getFailures()) {
            System.out.println(failure.toString());
        }

        System.out.println(result.wasSuccessful());
    }
}

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class OrderTestRunner {
    public static void main(String[] args) {
        Result result = JUnitCore.runClasses(OrderTest.class);
        for (Failure failure : result.getFailures()) {
            System.out.println(failure.toString());
        }

        System.out.println(result.wasSuccessful());
    }
}

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

Location

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

Problem

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

alright

szatkus•7mo ago

Yes

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

ok so but now my test is failure

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

how can I know why this is it?

szatkus•7mo ago

Because you return boolean for some reason.

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

I just changed it to void

szatkus•7mo ago

Oh, I see.

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

same class with void

public class OrderTest {
    @PersistenceContext(unitName = "WebPU")
    private EntityManager em;

    @BeforeAll
    public static void setUpClass() {

    }
    @Test
    public void testOrderCreation() {
        List<Destination> destinationList = em.createQuery("SELECT dt FROM Destination dt WHERE dt.id=:id", Destination.class)
                .setParameter("id", 1).getResultList();
        Destination destination = destinationList.get(0);
        if (destinationList.size() != 1) {
            System.out.println("couldn't find destination");
           return ;
        }
        List<Product> productList = em.createQuery("SELECT pdt FROM Product pdt WHERE pdt.id=:id", Product.class)
                .setParameter("id", 1).getResultList();

        if (productList.size() != 1) {
            System.out.println("couldn't find product");
             return ;
        }
        Product product = productList.get(0);

        Orders order = new Orders();
        order.setProductId(product);
        order.setDestination(destination);
        order.setQty(10);
        order.setCreatedAt(LocalDateTime.now());
        order.setExpectedDate(LocalDateTime.now().plusDays(5));
        order.setOrderStatus("not_shipped");
        em.persist(order);
        System.out.println("Insertion Success");
    }
}

public class OrderTest {
    @PersistenceContext(unitName = "WebPU")
    private EntityManager em;

    @BeforeAll
    public static void setUpClass() {

    }
    @Test
    public void testOrderCreation() {
        List<Destination> destinationList = em.createQuery("SELECT dt FROM Destination dt WHERE dt.id=:id", Destination.class)
                .setParameter("id", 1).getResultList();
        Destination destination = destinationList.get(0);
        if (destinationList.size() != 1) {
            System.out.println("couldn't find destination");
           return ;
        }
        List<Product> productList = em.createQuery("SELECT pdt FROM Product pdt WHERE pdt.id=:id", Product.class)
                .setParameter("id", 1).getResultList();

        if (productList.size() != 1) {
            System.out.println("couldn't find product");
             return ;
        }
        Product product = productList.get(0);

        Orders order = new Orders();
        order.setProductId(product);
        order.setDestination(destination);
        order.setQty(10);
        order.setCreatedAt(LocalDateTime.now());
        order.setExpectedDate(LocalDateTime.now().plusDays(5));
        order.setOrderStatus("not_shipped");
        em.persist(order);
        System.out.println("Insertion Success");
    }
}

szatkus•7mo ago

You're meddling with pure JUnit. That's unusual. Let me look this up. failure.getException().printStackTrace();

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

ok null pointer exception is the cause

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

but there is clearly a Destination with id 1

szatkus•7mo ago

Probably there's nothing there to interpret the PersistenceContext annotation.

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

here

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

so it is not even there in the first place EntityManager is null

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

Arquillian needed?

szatkus•7mo ago

No idea, I wouldn't use a single thing that you're using except Java.

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

why? The requirement is to use JUnit for the assignment

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

see

szatkus•7mo ago

Java EE is getting less and less popular and nowdays it's usually a red flag indicating a shitty project.

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

yah we had a convo today in general

szatkus•7mo ago

I'd use JUnit, but you're apparently using JUnit 4, which I wouldn't pick, because JUnit 5 is more enjoyable to work with.

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

https://discord.com/channels/648956210850299986/653632542100160547/1241660779640520745

john•7mo ago

idk really, the tech is too old

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

yah but 5 has like a lot more configurations so I chose 4 because just one or two dependencies

szatkus•7mo ago

If you asked that a month ago I could've look up, because I had access to a Java EE project with JUnit tests.

Rag...JN 🌌 🦡 👽 💰 🐊OP•7mo ago

also I just started to work with JUnit 3 horus hours ago. read an article started to implement into the project where else can I apply JUnit beside the EJB because this thing requires a lot of configuration at last to get some marks

JavaBot•7mo ago

💤 Post marked as dormant

This post has been inactive for over 300 minutes, thus, it has been archived. If your question was not answered yet, feel free to re-open this post or create a new one. In case your post is not getting any attention, you can try to use /help ping. Warning: abusing this will result in moderative actions taken against you.

Gaming

Programming

JUnit, can I create an EntityManager or even a session without running the server?