Add validation check to EDR query registration (#1774)

* Add validation check to EDR query registration

* Fix flake8

* fix edr query types

pygeoapi/provider/base_edr.py

@@ -29,10 +29,14 @@
 
 import logging
 
-from pygeoapi.provider.base import BaseProvider
+from pygeoapi.provider.base import BaseProvider, ProviderInvalidDataError
 
 LOGGER = logging.getLogger(__name__)
 
+EDR_QUERY_TYPES = ['position', 'radius', 'area', 'cube',
+                   'trajectory', 'corridor', 'items',
+                   'locations', 'instances']
+
 
 class BaseEDRProvider(BaseProvider):
     """Base EDR Provider"""
@@ -55,6 +59,11 @@ def __init__(self, provider_def):
     @classmethod
     def register(cls):
         def inner(fn):
+            if fn.__name__ not in EDR_QUERY_TYPES:
+                msg = 'Invalid EDR Query type'
+                LOGGER.error(msg)
+                raise ProviderInvalidDataError(msg)
+
             cls.query_types.append(fn.__name__)
             return fn
         return inner