Added utility function to build a proper resources dict

IPython/nbconvert/transformers/tests/base.py

@@ -14,10 +14,11 b' Module with utility functions for transformer tests'
 # Imports
 #-----------------------------------------------------------------------------
 
-from ...tests.base import TestsBase
-
 from IPython.nbformat import current as nbformat
 
+from ...tests.base import TestsBase
+from ...exporters.exporter import ResourcesDict
+
 #-----------------------------------------------------------------------------
 # Class
 #-----------------------------------------------------------------------------
@@ -42,3 +43,11 b' class TransformerTestsBase(TestsBase):'
         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

IPython/nbconvert/transformers/tests/test_coalescestreams.py

@@ -27,7 +27,7 b' class TestCoalesceStreams(TransformerTestsBase):'
 
     def test_coalesce_streams(self):
         """coalesce_streams transformer output test"""
-        nb, res = coalesce_streams(self.build_notebook(), {})
+        nb, res = coalesce_streams(self.build_notebook(), self.build_resources())
         self.assertEqual(nb.worksheets[0].cells[0].outputs[0].text, "a")
         self.assertEqual(nb.worksheets[0].cells[0].outputs[1].output_type, "text")
         self.assertEqual(nb.worksheets[0].cells[0].outputs[2].text, "cd")

IPython/nbconvert/transformers/tests/test_csshtmlheader.py

@@ -34,6 +34,6 b' class TestCSSHTMLHeader(TransformerTestsBase):'
 
     def test_output(self):
         """Test the output of the CSSHTMLHeaderTransformer"""
-        nb, res = self.test_constructor()(self.build_notebook(), {})
+        nb, res = self.test_constructor()(self.build_notebook(), self.build_resources())
         assert 'inlining' in res
         assert 'css' in res['inlining'] 
  No newline at end of file

IPython/nbconvert/transformers/tests/test_extractoutput.py

@@ -34,7 +34,7 b' class TestExtractOutput(TransformerTestsBase):'
 
     def test_output(self):
         """Test the output of the ExtractOutputTransformer"""
-        nb, res = self.test_constructor()(self.build_notebook(), {})
+        nb, res = self.test_constructor()(self.build_notebook(), self.build_resources())
 
         # Check if text was extracted.
         assert 'text_filename' in nb.worksheets[0].cells[0].outputs[1]

IPython/nbconvert/transformers/tests/test_latex.py

@@ -34,7 +34,7 b' class TestLatex(TransformerTestsBase):'
 
     def test_output(self):
         """Test the output of the LatexTransformer"""
-        nb, res = self.test_constructor()(self.build_notebook(), {})
+        nb, res = self.test_constructor()(self.build_notebook(), self.build_resources())
 
         # Make sure the code cell wasn't modified.
         self.assertEqual(nb.worksheets[0].cells[0].input, '$ e $')