Properly marked skipped GIS tests as skipped

from unittest import skip

from django.conf import settings

from django.db import DEFAULT_DB_ALIAS

# function that will pass a test.

def pass_test(*args): return

def no_backend(test_func, backend):

    "Use this decorator to disable test on specified backend."

    if settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE'].rsplit('.')[-1] == backend:

        return pass_test

        @skip("This test is skipped on '%s' backend" % backend)

        def inner():

            pass

        return inner

    else:

        return test_func