Added revealhelp transformer tests

IPython/nbconvert/transformers/tests/test_revealhelp.py

@@ -0,0 +1,93
+"""
+Module with tests for the revealhelp transformer
+"""
+
+#-----------------------------------------------------------------------------
+# 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 .base import TransformerTestsBase
+from ..revealhelp import RevealHelpTransformer
+
+
+#-----------------------------------------------------------------------------
+# Class
+#-----------------------------------------------------------------------------
+
+class Testrevealhelp(TransformerTestsBase):
+    """Contains test functions for revealhelp.py"""
+
+    def build_notebook(self):
+        """Build a reveal slides notebook in memory for use with tests.  
+        Overrides base in TransformerTestsBase"""
+
+        outputs = [nbformat.new_output(output_type="stream", stream="stdout", output_text="a")]
+        
+        slide_metadata = {'slideshow' : {'slide_type': 'slide'}}
+        subslide_metadata = {'slideshow' : {'slide_type': 'subslide'}}
+
+        cells=[nbformat.new_code_cell(input="", prompt_number=1, outputs=outputs),
+               nbformat.new_text_cell('markdown', source="", metadata=slide_metadata),
+               nbformat.new_code_cell(input="", prompt_number=2, outputs=outputs),
+               nbformat.new_text_cell('markdown', source="", metadata=slide_metadata),
+               nbformat.new_text_cell('markdown', source="", metadata=subslide_metadata)]
+        worksheets = [nbformat.new_worksheet(name="worksheet1", cells=cells)]
+
+        return nbformat.new_notebook(name="notebook1", worksheets=worksheets)
+
+    def test_constructor(self):
+        """Can a RevealHelpTransformer be constructed?"""
+        transformer = RevealHelpTransformer()
+        transformer.enabled = True
+        return transformer
+    
+
+    def test_reveal_attribute(self):
+        """Make sure the reveal url_prefix resources is set"""
+        nb, res = self.test_constructor()(self.build_notebook(), self.build_resources())
+        assert 'reveal' in res
+        assert  'url_prefix' in res['reveal']
+
+
+    def test_reveal_output(self):
+        """Make sure that the reveal transformer """
+        nb, res = self.test_constructor()(self.build_notebook(), self.build_resources())
+        cells = nb.worksheets[0].cells
+        
+        # Make sure correct metadata tags are available on every cell.
+        assert 'slide_type' in cells[0].metadata
+        assert 'align_type' in cells[0].metadata
+
+        assert 'slide_type' in cells[1].metadata
+        assert 'align_type' in cells[1].metadata
+
+        assert 'slide_type' in cells[2].metadata
+        assert 'align_type' in cells[2].metadata
+
+        assert 'slide_type' in cells[3].metadata
+        assert 'align_type' in cells[3].metadata
+
+        assert 'slide_type' in cells[4].metadata
+        assert 'align_type' in cells[4].metadata
+
+        # Make sure slide end is only applied to the cells preceeding slide 
+        # cells.
+        assert 'slide_helper' not in cells[1].metadata
+
+        # Verify 'slide-end'
+        assert 'slide_helper' in cells[0].metadata
+        self.assertEqual(cells[0].metadata['slide_helper'], 'slide_end')
+        assert 'slide_helper' in cells[2].metadata
+        self.assertEqual(cells[2].metadata['slide_helper'], 'slide_end')
+        assert 'slide_helper' in cells[3].metadata
+        self.assertEqual(cells[3].metadata['slide_helper'], 'subslide_end')