py3 unicode fix for output_png key

IPython/nbconvert/transformers/tests/base.py

@@ -1,53 +1,53 b''
 """
 Module with utility functions for transformer tests
 """
 
 #-----------------------------------------------------------------------------
 # Copyright (c) 2013, the IPython Development Team.
 #
 # Distributed under the terms of the Modified BSD License.
 #
 # The full license is in the file COPYING.txt, distributed with this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
 from IPython.nbformat import current as nbformat
 
 from ...tests.base import TestsBase
 from ...exporters.exporter import ResourcesDict
 
 #-----------------------------------------------------------------------------
 # Class
 #-----------------------------------------------------------------------------
 
 class TransformerTestsBase(TestsBase):
     """Contains test functions transformer tests"""
 
 
     def build_notebook(self):
         """Build a notebook in memory for use with transformer tests"""
 
         outputs = [nbformat.new_output(output_type="stream", stream="stdout", output_text="a"),
                    nbformat.new_output(output_type="text", output_text="b"),
                    nbformat.new_output(output_type="stream", stream="stdout", output_text="c"),
                    nbformat.new_output(output_type="stream", stream="stdout", output_text="d"),
                    nbformat.new_output(output_type="stream", stream="stderr", output_text="e"),
                    nbformat.new_output(output_type="stream", stream="stderr", output_text="f"),
-                   nbformat.new_output(output_type="png", output_png='Zw==')] #g
+                   nbformat.new_output(output_type="png", output_png=u'Zw==')] #g
         
         cells=[nbformat.new_code_cell(input="$ e $", prompt_number=1,outputs=outputs),
                nbformat.new_text_cell('markdown', source="$ e $")]
         worksheets = [nbformat.new_worksheet(name="worksheet1", cells=cells)]
 
         return nbformat.new_notebook(name="notebook1", worksheets=worksheets)
 
 
     def build_resources(self):
         """Build an empty resources dictionary."""
         
         res = ResourcesDict()
         res['metadata'] = ResourcesDict()
         return res
  No newline at end of file