code: def test_log_loss_scalar(self):
      log_loss = self.variant(losses.log_loss)
      preds = self.preds[2]
      targets = self.targets[2]
      # Test output.
      np.testing.assert_allclose(
          log_loss(preds, targets), self.expected[2], atol=1e-4
      )
  
imports: import functools
  from absl.testing import absltest
  from absl.testing import parameterized
  import chex
  import jax
  import jax.numpy
  import numpy
  from rlax._src import losses
label_desc: Use image node_id 2 for calling the LogLossTest obj's underlying member method code with example usage: obj.test_log_loss_scalar() without return types