Question

I have some hibernate queries where I expect some objects to be eargerly loaded while others are lazy-loaded.
My current approch for checking for eager loading is measuring the time it takes to access a property.

//Call the method i want to test.
Customer customer = loadCustomerWithProducts();

long start = System.currentTimeMillis();

//Call a method on an object that sould have been eagerly loaded.
customer.getProducts().get(0).getName();

long end = System.currentTimeMillis();
long diff = end - start;

Assert.assertTrue(diff < 50); //Assuming that hitting the database takes longer than 50ms.

This aproach is very flawed, as tests will fail depending on system performance. Is there a better way?

Answer 1

I would use

Hibernate.isInitialized(customer.getProducts())