code: def test_compile_unimodal(unimodal_model):
      """Test compile function when a single loss function is passed."""
      assert isinstance(unimodal_model.loss, LossContainer)
  
imports: from typing import List
  import numpy
  import pytest
  import torch
  import torch.nn
  import torch.optim
  from torch.utils.data import DataLoader, TensorDataset
  from alibi.models.pytorch.metrics import AccuracyMetric, LossContainer
  from alibi.models.pytorch.model import Model
label_desc: Use image node_id 4 for calling a global function with example usage: test_compile_unimodal(unimodal_model) without return types