old_contents: import blimpy as bl
  import numpy as np
  from pprint import pprint
  import pytest
  from tests.data import voyager_fil, voyager_h5
  from blimpy.plotting.config import plt
  
  
  def compare_filterbank_fil_to_h5():
      """ Load Voyager dataset and test that both fil and hdf5 readers return same headers and data """
  
      print("Loading FIL and HDF5 data with Waterfall()..."),
      a = bl.Waterfall(voyager_h5)
      b = bl.Waterfall(voyager_fil)
      print("OK")
  
      print("Reading headers..")
      print("\nHDF5 file header:")
      pprint(a.header)
      print("\nFIL file header:")
      pprint(b.header)
      print("Headers are loading OK")
  
      print("\nChecking header values match..."),
      for key in b.header.keys():
          assert b.header[key] == a.header[key]
      print("OK")
  
      print("Checking datatype matches..."),
      assert a.data.dtype == b.data.dtype
      print("OK")
  
      print("Checking data matches..."),
      assert np.allclose(a.data, b.data)
      assert a.data.dtype == b.data.dtype
      print("OK")
  
  
  def test_plotting_doesnt_cause_exceptions():
      """ Try running the plotting routines. They should not raise expections even without X windows """
      a = bl.Waterfall(voyager_h5)
      b = bl.Waterfall(voyager_fil)
  
      a.plot_all()
      a.plot_kurtosis()
      a.plot_spectrum()
      a.plot_spectrum_min_max()
      a.plot_waterfall()
      a.plot_time_series()
  
      b.plot_all()
      b.plot_kurtosis()
      b.plot_spectrum()
      b.plot_spectrum_min_max()
      b.plot_waterfall()
      b.plot_time_series()
      plt.clf()
  
  
  def test_cmdtool():
      with pytest.raises(SystemExit):
          bl.waterfall.cmd_tool(args=[])
  
  
  if __name__ == "__main__":
      compare_filterbank_fil_to_h5()
      test_plotting_doesnt_cause_exceptions()
  
      test_cmdtool()
new_contents: import blimpy as bl
  import numpy as np
  from pprint import pprint
  import pytest
  from tests.data import voyager_fil, voyager_h5
  from blimpy.plotting.config import plt
  
  
  def compare_filterbank_fil_to_h5():
      """ Load Voyager dataset and test that both fil and hdf5 readers return same headers and data """
  
      print("Loading FIL and HDF5 data with Waterfall()..."),
      a = bl.Waterfall(voyager_h5)
      b = bl.Waterfall(voyager_fil)
      print("OK")
  
      print("Reading headers..")
      print("\nHDF5 file header:")
      pprint(a.header)
      print("\nFIL file header:")
      pprint(b.header)
      print("Headers are loading OK")
  
      print("\nChecking header values match..."),
      for key in b.header.keys():
          assert b.header[key] == a.header[key]
      print("OK")
  
      print("Checking datatype matches..."),
      assert a.data.dtype == b.data.dtype
      print("OK")
  
      print("Checking data matches..."),
      assert np.allclose(a.data, b.data)
      assert a.data.dtype == b.data.dtype
      print("OK")
  
  
  def test_plotting_doesnt_cause_exceptions():
      """ Try running the plotting routines. They should not raise expections even without X windows """
      a = bl.Waterfall(voyager_h5)
      b = bl.Waterfall(voyager_fil)
  
      a.plot_all()
      a.plot_kurtosis()
      a.plot_spectrum()
      a.plot_spectrum_min_max()
      a.plot_waterfall()
      a.plot_time_series()
      plt.clf() # Fix issue #140
  
      b.plot_all()
      b.plot_kurtosis()
      b.plot_spectrum()
      b.plot_spectrum_min_max()
      b.plot_waterfall()
      b.plot_time_series()
      plt.clf()
  
  
  def test_cmdtool():
      with pytest.raises(SystemExit):
          bl.waterfall.cmd_tool(args=[])
  
  
  if __name__ == "__main__":
      compare_filterbank_fil_to_h5()
      test_plotting_doesnt_cause_exceptions()
  
      test_cmdtool()
  
subject: Fix blimpy issue #140