Add support for AAF unit tests in travis. (#370)

* Fix dependencies to include pyaaf on linux.
* Make tests print in verbose mode so that its easier to see what gets skipped.
* Remove python37 since we aren't supporting it yet.
* Only run unit tests once.

.travis.yml

@@ -4,27 +4,19 @@ python:
     - "3.5"
     - "3.6"
 
-env:
-    global:
-        - PYAAF27=PyAAF-1.0.0-cp27-cp27mu-manylinux1_x86_64.whl
-        - PYAAF35=PyAAF-1.0.0-cp35-cp35m-manylinux1_x86_64.whl
-        - PYAAF36=PyAAF-1.0.0-cp36-cp36m-manylinux1_x86_64.whl
-
 before_install:
     # Note that pyaaf is only needed for the AAF adapter
     # We need to get a wheel that matches our Python version
-    - if [[ $TRAVIS_PYTHON_VERSION == 2.7 ]]; then export PYAAF=$PYAAF27 ; fi
-    - if [[ $TRAVIS_PYTHON_VERSION == 3.5 ]]; then export PYAAF=$PYAAF35 ; fi
-    - if [[ $TRAVIS_PYTHON_VERSION == 3.6 ]]; then export PYAAF=$PYAAF36 ; fi
-    - wget -qO /tmp/${PYAAF} "https://github.com/markreidvfx/pyaaf/releases/download/v1.0.0/${PYAAF}"
+    - if [[ $TRAVIS_PYTHON_VERSION == 2.7 ]]; then export TOX_ENV=py27 ; fi
+    - if [[ $TRAVIS_PYTHON_VERSION == 3.5 ]]; then export TOX_ENV=py35 ; fi
+    - if [[ $TRAVIS_PYTHON_VERSION == 3.6 ]]; then export TOX_ENV=py36 ; fi
 
 install:
     # tox-travis installs tox and also makes working with travis better.
     - pip install tox-travis coverage
-    - pip install /tmp/${PYAAF}
 
 script:
-    - tox
+    - tox -e $TOX_ENV
 
 after_success:
     # Documentation for codecov uploader

opentimelineio_contrib/adapters/tests/test_burnins.py

@@ -140,7 +140,7 @@
 
 try:
     import PIL # noqa
-    from PIL import imaging # noqa
+    from PIL.Image import core as imaging # noqa
     could_import_pillow = True
 except (ImportError):
     could_import_pillow = False

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = clean,py27,py35,py36,py37,stats
+envlist = clean,py27,py35,py36,stats
 skip_missing_interpreters = true
 
 [flake8]
@@ -19,13 +19,18 @@ deps =
     check-manifest
     flake8
     Pillow
+    mock
+; TODO: This will ONLY work on linux systems.  If we could get this from PyPI,
+;       then the platform resolution could be handled by pip instead of here.
+    py27: https://github.com/markreidvfx/pyaaf/releases/download/v1.0.0/PyAAF-1.0.0-cp27-cp27mu-manylinux1_x86_64.whl
+    py35: https://github.com/markreidvfx/pyaaf/releases/download/v1.0.0/PyAAF-1.0.0-cp35-cp35m-manylinux1_x86_64.whl
+    py36: https://github.com/markreidvfx/pyaaf/releases/download/v1.0.0/PyAAF-1.0.0-cp36-cp36m-manylinux1_x86_64.whl
+
 commands =
     check-manifest --ignore tox.ini,tests*,requirements* --ignore-bad-ideas *.egg-info,*egg-info/*
     flake8 opentimelineio
-    python -m unittest discover -s tests
-    python -m unittest discover -s opentimelineio_contrib/adapters/tests
-    coverage run -a --source=opentimelineio -m unittest discover tests
-    coverage run -a --source=opentimelineio_contrib/adapters -m unittest discover opentimelineio_contrib/adapters/tests
+    coverage run -a --source=opentimelineio -m unittest discover tests -vvv
+    coverage run -a --source=opentimelineio_contrib/adapters -m unittest discover opentimelineio_contrib/adapters/tests -vvv
     coverage report --include=* -m
 
 [testenv:clean]