old_contents: from nose.tools import eq_
  from pyexcel_io.sheet import SheetWriter
  
  
  class MyWriter(SheetWriter):
  
      def set_size(self, size):
          self.native_book = size
  
  
  def test_write_empty_array():
      test_string = "somebook"
      writer = MyWriter(test_string, "somesheet", "somename")
      writer.write_array([])
      eq_(test_string, writer._native_book)
  
  
  
new_contents: from nose.tools import eq_
  from pyexcel_io.sheet import SheetWriter
  
  
  class MyWriter(SheetWriter):
  
      def set_size(self, size):
          self.native_book = size
  
  
  def test_write_empty_array():
      test_string = "somebook"
      writer = MyWriter(test_string, "somesheet", "somename")
      writer.write_array([])
      eq_(test_string, writer._native_book)
  
subject: remove blank lines