text: """
  Generate data used in the HDF5DataLayer and GradientBasedSolver tests.
  """
  import os
  import numpy as np
  import h5py
  
  script_dir = os.path.dirname(os.path.abspath(__file__))
  
  # Generate HDF5DataLayer sample_data.h5
  
  num_cols = 8
  num_rows = 10
  height = 6
  width = 5
  total_size = num_cols * num_rows * height * width
  
  data = np.arange(total_size)
  data = data.reshape(num_rows, num_cols, height, width)
  data = data.astype('float32')
  
  # We had a bug where data was copied into label, but the tests weren't
  # catching it, so let's make label 1-indexed.
  label = 1 + np.arange(num_rows)[:, np.newaxis]
  label = label.astype('float32')
  
  # We add an extra label2 dataset to test HDF5 layer's ability
  # to handle arbitrary number of output ("top") Blobs.
  label2 = label + 1
  
  print data
  print label
  
  with h5py.File(script_dir + '/sample_data.h5', 'w') as f:
      f['data'] = data
      f['label'] = label
      f['label2'] = label2
  
  with h5py.File(script_dir + '/sample_data_2_gzip.h5', 'w') as f:
      f.create_dataset(
          'data', data=data + total_size,
          compression='gzip', compression_opts=1
      )
      f.create_dataset(
          'label', data=label,
          compression='gzip', compression_opts=1,
          dtype='uint8',
      )
      f.create_dataset(
          'label2', data=label2,
          compression='gzip', compression_opts=1,
          dtype='uint8',
      )
  
  with open(script_dir + '/sample_data_list.txt', 'w') as f:
      f.write('src/caffe/test/test_data/sample_data.h5\n')
      f.write('src/caffe/test/test_data/sample_data_2_gzip.h5\n')
  
  # Generate GradientBasedSolver solver_data.h5
  
  num_cols = 3
  num_rows = 8
  height = 10
  width = 10
  
  data = np.random.randn(num_rows, num_cols, height, width)
  data = data.reshape(num_rows, num_cols, height, width)
  data = data.astype('float32')
  
  targets = np.random.randn(num_rows, 1)
  targets = targets.astype('float32')
  
  print data
  print targets
  
  with h5py.File(script_dir + '/solver_data.h5', 'w') as f:
      f['data'] = data
      f['targets'] = targets
  
  with open(script_dir + '/solver_data_list.txt', 'w') as f:
      f.write('src/caffe/test/test_data/solver_data.h5\n')
  