Test no incorrect 'data:image/png;base64,b' in html files.

IPython/nbconvert/tests/test_nbconvertapp.py

@@ -1,160 +1,174 b''
 """
 Contains tests for the nbconvertapp
 """
 #-----------------------------------------------------------------------------
 #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
 #-----------------------------------------------------------------------------
 
 import os
 import glob
+import sys
 
 from .base import TestsBase
 
 from IPython.testing import decorators as dec
+from IPython.external.decorators import knownfailureif
 
     
 #-----------------------------------------------------------------------------
 # Constants
 #-----------------------------------------------------------------------------
 
 
 #-----------------------------------------------------------------------------
 # Classes and functions
 #-----------------------------------------------------------------------------
 
 class TestNbConvertApp(TestsBase):
     """Collection of NbConvertApp tests"""
 
 
     def test_notebook_help(self):
         """
         Will help show if no notebooks are specified?
         """
         with self.create_temp_cwd():
             out, err = self.call('nbconvert --log-level 0', ignore_return_code=True)
             assert "see '--help-all'" in out
 
 
     def test_glob(self):
         """
         Do search patterns work for notebook names?
         """
         with self.create_temp_cwd(['notebook*.ipynb']):
             self.call('nbconvert --to python *.ipynb --log-level 0')
             assert os.path.isfile('notebook1.py')
             assert os.path.isfile('notebook2.py')
 
 
     def test_glob_subdir(self):
         """
         Do search patterns work for subdirectory notebook names?
         """
         with self.create_temp_cwd():
             self.copy_files_to(['notebook*.ipynb'], 'subdir/')
             self.call('nbconvert --to python --log-level 0 ' + 
                       os.path.join('subdir', '*.ipynb'))
             assert os.path.isfile('notebook1.py')
             assert os.path.isfile('notebook2.py')
 
 
     def test_explicit(self):
         """
         Do explicit notebook names work?
         """
         with self.create_temp_cwd(['notebook*.ipynb']):
             self.call('nbconvert --log-level 0 --to python notebook2')
             assert not os.path.isfile('notebook1.py')
             assert os.path.isfile('notebook2.py')
 
 
     @dec.onlyif_cmds_exist('pdflatex')
     @dec.onlyif_cmds_exist('pandoc')
     def test_filename_spaces(self):
         """
         Generate PDFs with graphics if notebooks have spaces in the name?
         """
         with self.create_temp_cwd(['notebook2.ipynb']):
             os.rename('notebook2.ipynb', 'notebook with spaces.ipynb')
             o,e = self.call('nbconvert --log-level 0 --to latex '
                             '"notebook with spaces" --post PDF '
                             '--PDFPostProcessor.verbose=True')
             assert os.path.isfile('notebook with spaces.tex')
             assert os.path.isdir('notebook with spaces_files')
             assert os.path.isfile('notebook with spaces.pdf')
 
     @dec.onlyif_cmds_exist('pdflatex')
     @dec.onlyif_cmds_exist('pandoc')
     def test_post_processor(self):
         """
         Do post processors work?
         """
         with self.create_temp_cwd(['notebook1.ipynb']):
             self.call('nbconvert --log-level 0 --to latex notebook1 '
                       '--post PDF --PDFPostProcessor.verbose=True')
             assert os.path.isfile('notebook1.tex')
             assert os.path.isfile('notebook1.pdf')
 
 
     @dec.onlyif_cmds_exist('pandoc')
+    @knownfailureif(sys.version_info[0] >= 3, "nbconvert html conversion fails for .png images on Python3 ")
+    def test_png_base64_html_ok(self):
+        """Is embedded png data well formed in HTML?"""
+        with self.create_temp_cwd(['notebook2.ipynb']):
+            self.call('nbconvert --log-level 0 --to HTML '
+                      'notebook2.ipynb --template full')
+            assert os.path.isfile('notebook2.html')
+            with open('notebook2.html') as f:
+                assert "data:image/png;base64,b'" not in f.read()
+
+
+    @dec.onlyif_cmds_exist('pandoc')
     def test_template(self):
         """
         Do export templates work?
         """
         with self.create_temp_cwd(['notebook2.ipynb']):
             self.call('nbconvert --log-level 0 --to slides '  
                       'notebook2.ipynb --template reveal')
             assert os.path.isfile('notebook2.slides.html')
             with open('notebook2.slides.html') as f:
                 assert '/reveal.css' in f.read()
 
 
     def test_glob_explicit(self):
         """
         Can a search pattern be used along with matching explicit notebook names?
         """
         with self.create_temp_cwd(['notebook*.ipynb']):
             self.call('nbconvert --log-level 0 --to python '
                       '*.ipynb notebook1.ipynb notebook2.ipynb')
             assert os.path.isfile('notebook1.py')
             assert os.path.isfile('notebook2.py')
 
 
     def test_explicit_glob(self):
         """
         Can explicit notebook names be used and then a matching search pattern?
         """
         with self.create_temp_cwd(['notebook*.ipynb']):
             self.call('nbconvert --log-level 0 --to=python '
                       'notebook1.ipynb notebook2.ipynb *.ipynb')
             assert os.path.isfile('notebook1.py')
             assert os.path.isfile('notebook2.py')
 
 
     def test_default_config(self):
         """
         Does the default config work?
         """
         with self.create_temp_cwd(['notebook*.ipynb', 'ipython_nbconvert_config.py']):
             self.call('nbconvert --log-level 0')
             assert os.path.isfile('notebook1.py')
             assert not os.path.isfile('notebook2.py')
 
 
     def test_override_config(self):
         """
         Can the default config be overriden?
         """
         with self.create_temp_cwd(['notebook*.ipynb',
                                    'ipython_nbconvert_config.py',
                                    'override.py']):
             self.call('nbconvert --log-level 0 --config="override.py"')
             assert not os.path.isfile('notebook1.py')
             assert os.path.isfile('notebook2.py')