add api for testing credential plugins

awx/api/views/__init__.py

@@ -1419,6 +1419,32 @@ class CredentialCopy(CopyAPIView):
     copy_return_serializer_class = serializers.CredentialSerializer
 
 
+class CredentialExternalTest(SubDetailAPIView):
+    """
+    Test updates to the input values of an external credential before
+    saving them.
+    """
+
+    view_name = _('External Credential Test')
+
+    model = models.Credential
+    serializer_class = serializers.EmptySerializer
+
+    def post(self, request, *args, **kwargs):
+        obj = self.get_object()
+        test_inputs = {}
+        for field_name, value in request.data.get('inputs', {}).items():
+            if value == '$encrypted$':
+                test_inputs[field_name] = obj.get_input(field_name)
+            else:
+                test_inputs[field_name] = value
+        try:
+            obj.credential_type.plugin.backend(None, **test_inputs)
+            return Response({}, status=status.HTTP_202_ACCEPTED)
+        except Exception as exc:
+            return Response({'inputs': str(exc)}, status=status.HTTP_400_BAD_REQUEST)
+
+
 class CredentialInputSourceDetail(RetrieveUpdateDestroyAPIView):
 
     view_name = _("Credential Input Source Detail")
@@ -1446,6 +1472,27 @@ class CredentialInputSourceSubList(SubListCreateAttachDetachAPIView):
     parent_key = 'target_credential'
 
 
+class CredentialTypeExternalTest(SubDetailAPIView):
+    """
+    Test a complete set of input values for an external credential before
+    saving it.
+    """
+
+    view_name = _('External Credential Type Test')
+
+    model = models.CredentialType
+    serializer_class = serializers.EmptySerializer
+
+    def post(self, request, *args, **kwargs):
+        obj = self.get_object()
+        test_inputs = request.data.get('inputs', {})
+        try:
+            obj.plugin.backend(None, **test_inputs)
+            return Response({}, status=status.HTTP_202_ACCEPTED)
+        except Exception as exc:
+            return Response({'inputs': str(exc)}, status=status.HTTP_400_BAD_REQUEST)
+
+
 class HostRelatedSearchMixin(object):
 
     @property