code: def test_loader_from_array(self):
      pseudo_ds = np.arange(65)
      loader = elegy.data.DataLoader(pseudo_ds, batch_size=10)
      batches = list(loader)
      assert len(batches) == 7
      assert np.all(batches[1] == np.arange(10, 20))
  
imports: from unittest import TestCase
  import jax.numpy
  import numpy
  import optax
  import pytest
  import elegy
label_desc: Use image node_id 10 for calling the DataLoaderTestCase obj's underlying member method code with example usage: obj.test_loader_from_array() without return types