text: 
  import os
  
  import numpy as np
  import pytest
  
  import sunpy.data.test
  import sunpy.map
  from sunpy.instr import iris
  from sunpy.util.exceptions import SunpyMetadataWarning
  
  
  def test_SJI_to_sequence():
      test_data = os.path.join(sunpy.data.test.rootdir,
                               'iris_l2_20130801_074720_4040000014_SJI_1400_t000.fits')
      iris_cube = iris.SJI_to_sequence(test_data, start=0, stop=None, hdu=0)
  
      assert isinstance(iris_cube, sunpy.map.MapSequence)
      assert isinstance(iris_cube.maps[0], sunpy.map.sources.SJIMap)
      assert len(iris_cube.maps) == 2
      assert iris_cube.maps[0].meta['DATE-OBS'] != iris_cube.maps[1].meta['DATE-OBS']
  
  
  def test_iris_rot():
      test_data = os.path.join(sunpy.data.test.rootdir,
                               'iris_l2_20130801_074720_4040000014_SJI_1400_t000.fits')
      iris_cube = iris.SJI_to_sequence(test_data, start=0, stop=None, hdu=0)
      irismap = iris_cube.maps[0]
      with pytest.warns(SunpyMetadataWarning, match='Missing metadata for observer'):
          irismap_rot = irismap.rotate()
  
      assert isinstance(irismap_rot, sunpy.map.sources.SJIMap)
  
      np.testing.assert_allclose(irismap_rot.meta['pc1_1'], 1)
      np.testing.assert_allclose(irismap_rot.meta['pc1_2'], 0, atol=1e-7)
      np.testing.assert_allclose(irismap_rot.meta['pc2_1'], 0, atol=1e-7)
      np.testing.assert_allclose(irismap_rot.meta['pc2_2'], 1)
  