Add debug statements about mock on travis

.travis.yml

@@ -8,6 +8,7 @@ addons:
 services:
   - memcached
 before_install:
+  - python -c 'import mock; print(mock.__file__); print(mock.__version__)' || echo no mock
   - sudo apt-get update
   # Remove python-zope.interface, not compatible with the pyramid version we're
   # using
@@ -18,21 +19,27 @@ before_install:
   - sudo apt-get install libxml2-dev libxslt-dev postgresql-server-dev-9.4
   - git clone https://github.com/petere/plxslt.git
   - cd plxslt && sudo make && sudo make install && cd ..
+  - python -c 'import mock; print(mock.__file__); print(mock.__version__)' || echo no mock
   # Install cnx-query-grammar
   - git clone https://github.com/Connexions/cnx-query-grammar.git
   - cd cnx-query-grammar && python setup.py install && cd ..
+  - python -c 'import mock; print(mock.__file__); print(mock.__version__)' || echo no mock
   # Install cnx-epub
   - git clone https://github.com/Connexions/cnx-epub.git
   - cd cnx-epub && python setup.py install && cd ..
+  - python -c 'import mock; print(mock.__file__); print(mock.__version__)' || echo no mock
   # Install rhaptos.cnxmlutils
   - git clone https://github.com/Connexions/rhaptos.cnxmlutils.git
   - cd rhaptos.cnxmlutils && python setup.py install && cd ..
+  - python -c 'import mock; print(mock.__file__); print(mock.__version__)' || echo no mock
   # Install bug-fixes branch of plpydbapi
   - git clone -b bug-fixes https://github.com/Connexions/plpydbapi.git
   - cd plpydbapi && python setup.py install && cd ..
+  - python -c 'import mock; print(mock.__file__); print(mock.__version__)' || echo no mock
   # Scripts get installed to /usr/local/bin
   - pip install coverage
   - pip install coveralls
+  - python -c 'import mock; print(mock.__file__); print(mock.__version__)' || echo no mock
 install:
   - python setup.py install
 before_script: