OpenAPI 3.0.0 schema fix: Parameter Object must contain 'schema' or 'content'

[jfinkhaeuser]

See the Fixed Fields section of the specs, towards the end:

A parameter MUST contain either a schema property, or a content property, but not both.

Adding the oneOf constraint requiring either content or schema fixes this issue.

The same issue applies to all objects that refer to Parameter Objects as their basis, such as e.g. Header Objects. I will add to this branch until I've adjusted all of those, and notify when this is done.

[codecov]

Codecov Report

Merging #25 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #25   +/-   ##
=======================================
  Coverage   95.09%   95.09%           
=======================================
  Files          11       11           
  Lines         326      326           
=======================================
  Hits          310      310           
  Misses         16       16

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[jfinkhaeuser]

Actually, it seems as if Parameter and Header objects are it. So this should do the trick.

[jfinkhaeuser]

The build failure appears to be due to pyflakes:

../../../virtualenv/python3.3.6/lib/python3.3/site-packages/pyflakes/checker.py:1198: in LAMBDA
    args.append(wildcard if PY2 else wildcard.arg)
E   AttributeError: 'str' object has no attribute 'arg'

[p1c2u]

@jfinkhaeuser thank you for the contribution. LGTM

[jfinkhaeuser]

You're welcome!