Fix Travis CI builds

Make user for docker image configurable
Upgrade test dependencies
Add .travis.yml and basic FreeCAD integration sanity test

.travis.yml

@@ -0,0 +1,12 @@
+language: python
+python:
+  - '3.6'
+services:
+    - docker
+install:
+    - docker build -t ose-workbench-platform --build-arg USER=$USER --build-arg UID=$(id -u) --build-arg GID=$(id -g) ./osewb
+    - docker run --name osewb --detach --volume $(pwd):/var/app ose-workbench-platform
+script:
+    - docker exec -it osewb pytest --cov osewb/ test/
+after_success:
+    - docker exec -e TRAVIS="$TRAVIS" -e TRAVIS_JOB_ID="$TRAVIS_JOB_ID" -e TRAVIS_BRANCH="$TRAVIS_BRANCH" -e TRAVIS_PULL_REQUEST="$TRAVIS_PULL_REQUEST" osewb coveralls

osewb/Dockerfile

@@ -1,8 +1,12 @@
 FROM ubuntu:18.04
 
-RUN useradd -m docker --uid=1000
-# Set password of docker user to "docker"
-RUN echo "docker:docker" | chpasswd
+ARG USER=docker
+ARG UID=1000
+ARG GID=1000
+ARG PASSWORD=docker
+
+RUN useradd -m $USER --uid=$UID
+RUN echo "$USER:$PASSWORD" | chpasswd
 
 RUN apt-get update && \
     apt-get install --yes --no-install-recommends \
@@ -44,7 +48,7 @@ ENV PYTHONPATH=/usr/lib/freecad/lib/
 RUN ln -s /usr/lib/freecad/Mod /usr/lib/freecad-python3/Mod
 RUN ln -s /usr/lib/freecad/Ext /usr/lib/freecad-python3/Ext
 
-USER 1000:1000
+USER $UID:$GID
 
 # Keep container running
 CMD tail -f /dev/null

osewb/test-requirements.txt

@@ -1,4 +1,4 @@
-coverage==5.0.3
-coveralls==1.10.0
-pytest==4.6.9
-pytest-cov==2.8.1
+coverage==5.1
+coveralls==2.0.0
+pytest==5.4.3
+pytest-cov==2.9.0

test/freecad_test.py

@@ -0,0 +1,22 @@
+import unittest
+
+# Need to import FreeCAD
+import FreeCAD as App
+import Part
+
+
+class FreeCADTest(unittest.TestCase):
+    """
+    Sanity test for FreeCAD integration.
+    """
+
+    def test_freecad(self):
+        box = Part.makeBox(10, 10, 10)
+        self.assertEqual(len(box.Faces), 6)
+        self.assertAlmostEqual(box.Volume, 1000)
+        self.assertAlmostEqual(box.Area, 600)
+        self.assertEqual(box.TypeId, 'Part::TopoShape')
+
+
+if __name__ == '__main__':
+    unittest.main()