code: def test_autoformer_forecaster_fit_eval_pred_array(self):
      train_data, val_data, test_data = create_data(loader=False)
      forecaster = AutoformerForecaster(
          past_seq_len=24,
          future_seq_len=5,
          input_feature_num=2,
          output_feature_num=2,
          label_len=12,
          freq="s",
      )
      forecaster.fit(train_data, epochs=3, batch_size=32)
      evaluate = forecaster.evaluate(val_data)
      pred = forecaster.predict(test_data)
  
imports: import numpy
  import pandas
  import tempfile
  import os
  from bigdl.chronos.utils import LazyImport
  from bigdl.chronos.data import TSDataset
  from unittest import TestCase
  import pytest
  from ..None import op_torch, op_automl
label_desc: Use image node_id 4 for calling the TestChronosModelAutoformerForecaster obj's underlying member method code with example usage: obj.test_autoformer_forecaster_fit_eval_pred_array() without return types