Tests

[jcaplan]

Related to issue #5

• Add all files from graphviz documentation examples into tests directory.
• Add .travis-ci.yml file to do automated build. currently only building the hello world example (it fails)
• Added build status to the main README. shows unknown status now but should work once this is merged. last build here: https://travis-ci.com/jcaplan/graphviz2drawio/builds/83812801

Note that python 3.4 has an import problem. The other two failures suffer from the KeyError: 'fill' already reported

Once hello world build passes, then the list of files tested can grow incrementally.

[jcaplan]

those are the names of the files in the graphviz.gitlab.io repository. I just copied them over.

[hbmartin]

@jcaplan what is the 3.4 import problem?

[jcaplan]

It looks like a circular dependency. SVG imports NodeFactory imports SVG.

 File "/home/travis/virtualenv/python3.4.6/lib/python3.4/site-packages/graphviz2drawio/__main__.py", line 2, in <module>
    from .graphviz2drawio import convert
  File "/home/travis/virtualenv/python3.4.6/lib/python3.4/site-packages/graphviz2drawio/graphviz2drawio.py", line 4, in <module>
    from .models import SVG
  File "/home/travis/virtualenv/python3.4.6/lib/python3.4/site-packages/graphviz2drawio/models/SVG.py", line 3, in <module>
    from graphviz2drawio.mx.NodeFactory import NodeFactory
  File "/home/travis/virtualenv/python3.4.6/lib/python3.4/site-packages/graphviz2drawio/mx/NodeFactory.py", line 1, in <module>
    from graphviz2drawio.models import SVG
ImportError: cannot import name 'SVG'