Checklist

• I have verified that that issue exists against the master branch of Django REST framework.
  Pypi 3.5.3
• I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• This is not a usage question. (Those should be directed to the discussion group instead.)
• This cannot be dealt with as a third party library. (We prefer new functionality to be in the form of third party libraries where possible.)
• I have reduced the issue to the simplest possible case.
• I have included a failing test as a pull request. (If you are unable to do so we can still accept the issue.)

Steps to reproduce

a. Have attached project to highlight issue [Uses Python 3.5]
/api/SampleRouteLimited/ will show single method available
/schema/ shows all methods normal for a viewset

b. Alternatively use an existing viewset.

1. Limit viewset to a single method
   i.e., http_method_names = ['get']
2. generate schema

Expected behavior

Only show schema information for requested methods.

Actual behavior

Returns information for all methods, even if not allowed.

coreapi_test.zip