code: def test_regressor(self):
      n_samples = 20
      x_test = np.array(
          ["the quick fox jumped over the lazy brown dog"] * n_samples
      )
      y_test = np.random.random(n_samples)
      model_test = Regressor(n_epochs=1)
      model_test.fit(x_test, y_test)
      preds = model_test.predict(x_test)
      self.assertIsInstance(preds, list)
      self.assertIsInstance(preds[0], list)
      self.assertIsInstance(preds[0][0], np.floating)
  
file_path: finetune/tests/test_general_api.py
imports: import os
  import unittest
  import warnings
  from pathlib import Path
  import tensorflow
  import pandas
  import numpy
  from finetune import MultiFieldClassifier, MultiFieldRegressor, Regressor
  from finetune.config import get_config
  from finetune.datasets import generic_download
label_desc: Use image node_id 8 for calling the TestModel obj's underlying member method code with example usage: obj.test_regressor() without return types