Update pytest and sphinx generation for new Jupyter notebooks

setup.cfg

@@ -2,7 +2,7 @@
 test=pytest
 
 [tool:pytest]
-addopts = --doctest-glob='*.rst'
+addopts = --doctest-glob='*.rst' --nbval
 testpaths = tests/ examples/ doc/
 python_files = test*.py examples/*.py
 python_functions = *_test test_* example_*

setup.py

@@ -275,9 +275,10 @@ setup(
     zip_safe=False,
     install_requires=['pycarl>=2.0.4'],
     setup_requires=['pytest-runner'],
-    tests_require=['pytest'],
+    tests_require=['pytest', 'nbval'],
     extras_require={
         "numpy":  ["numpy"],
+        "doc": ["sphinx", "sphinx_bootstrap_theme", "nbsphinx", "ipython", "ipykernel"], # also requires pandoc to be installed
     },
     python_requires='>=3',
 )

travis/build-helper.sh

@@ -70,8 +70,10 @@ run() {
 
   if [[ "$TASK" == *Documentation* ]]
   then
+    # Install dependencies for documentation
+    apt-get install -qq -y pandoc
+    python setup.py easy_install "stormpy[doc]"
     # Generate documentation
-    pip install sphinx sphinx_bootstrap_theme
     cd doc
     make html
     touch build/html/.nojekyll