capture logging in a few tests

this could probably be made more general,
but these were the two places I noticed log output.

IPython/html/tests/test_notebookapp.py

@@ -1,73 +1,74 b''
 """Test NotebookApp"""
 
 #-----------------------------------------------------------------------------
 #  Copyright (C) 2013 The IPython Development Team
 #
 #  Distributed under the terms of the BSD License.  The full license is in
 #  the file COPYING, distributed as part of this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
+import logging
 import os
 from tempfile import NamedTemporaryFile
 
 import nose.tools as nt
 
 from IPython.utils.tempdir import TemporaryDirectory
 from IPython.utils.traitlets import TraitError
 import IPython.testing.tools as tt
 from IPython.html import notebookapp
 NotebookApp = notebookapp.NotebookApp
 
 #-----------------------------------------------------------------------------
 # Test functions
 #-----------------------------------------------------------------------------
 
 def test_help_output():
     """ipython notebook --help-all works"""
     tt.help_all_output_test('notebook')
 
 def test_server_info_file():
-    nbapp = NotebookApp(profile='nbserver_file_test')
+    nbapp = NotebookApp(profile='nbserver_file_test', log=logging.getLogger())
     def get_servers():
         return list(notebookapp.list_running_servers(profile='nbserver_file_test'))
     nbapp.initialize(argv=[])
     nbapp.write_server_info_file()
     servers = get_servers()
     nt.assert_equal(len(servers), 1)
     nt.assert_equal(servers[0]['port'], nbapp.port)
     nt.assert_equal(servers[0]['url'], nbapp.connection_url)
     nbapp.remove_server_info_file()
     nt.assert_equal(get_servers(), [])
 
     # The ENOENT error should be silenced.
     nbapp.remove_server_info_file()
 
 def test_nb_dir():
     with TemporaryDirectory() as td:
         app = NotebookApp(notebook_dir=td)
         nt.assert_equal(app.notebook_dir, td)
 
 def test_no_create_nb_dir():
     with TemporaryDirectory() as td:
         nbdir = os.path.join(td, 'notebooks')
         app = NotebookApp()
         with nt.assert_raises(TraitError):
             app.notebook_dir = nbdir
 
 def test_missing_nb_dir():
     with TemporaryDirectory() as td:
         nbdir = os.path.join(td, 'notebook', 'dir', 'is', 'missing')
         app = NotebookApp()
         with nt.assert_raises(TraitError):
             app.notebook_dir = nbdir
 
 def test_invalid_nb_dir():
     with NamedTemporaryFile() as tf:
         app = NotebookApp()
         with nt.assert_raises(TraitError):
             app.notebook_dir = tf
 

IPython/nbconvert/postprocessors/tests/test_pdf.py

@@ -1,68 +1,69 b''
 """
 Module with tests for the PDF post-processor
 """
 
 #-----------------------------------------------------------------------------
 # 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 logging
 import os
 
 from IPython.testing import decorators as dec
 
 from ...tests.base import TestsBase
 from ..pdf import PDFPostProcessor
 
 
 #-----------------------------------------------------------------------------
 # Constants
 #-----------------------------------------------------------------------------
 
 HELLO_WORLD = r"""% hello.tex - Our first LaTeX example!
 \documentclass{article}
 \begin{document}
 Hello World!
 \end{document}"""
 
 
 #-----------------------------------------------------------------------------
 # Class
 #-----------------------------------------------------------------------------
 
 class TestPDF(TestsBase):
     """Contains test functions for pdf.py"""
 
 
     def test_constructor(self):
         """Can a PDFPostProcessor be constructed?"""
         PDFPostProcessor()
 
 
     @dec.onlyif_cmds_exist('pdflatex')
     def test_pdf(self):
         """Can a PDF be made using the PDFPostProcessor?"""
 
         # Work in a temporary directory with hello world latex in it.
         with self.create_temp_cwd():
             with open('a.tex', 'w') as f:
                 f.write(HELLO_WORLD)
 
             # Construct post-processor
-            processor = PDFPostProcessor()
+            processor = PDFPostProcessor(log=logging.getLogger())
             processor.verbose = False
             processor('a.tex')
 
             # Check that the PDF was created.
             assert os.path.isfile('a.pdf')
             
             # Make sure that temp files are cleaned up
             for ext in processor.temp_file_exts:
                 assert not os.path.isfile('a'+ext)