Expose get_config() on ModelTesters (#12812)

* Expose get_config() on ModelTesters

* Typo

tests/test_modeling_canine.py

@@ -18,7 +18,7 @@
 import unittest
 from typing import List, Tuple
 
-from transformers import is_torch_available
+from transformers import CanineConfig, is_torch_available
 from transformers.testing_utils import require_torch, slow, torch_device
 
 from .test_configuration_common import ConfigTester
@@ -29,7 +29,6 @@ if is_torch_available():
     import torch
 
     from transformers import (
-        CanineConfig,
         CanineForMultipleChoice,
         CanineForQuestionAnswering,
         CanineForSequenceClassification,
@@ -106,7 +105,12 @@ class CanineModelTester:
             token_labels = ids_tensor([self.batch_size, self.seq_length], self.num_labels)
             choice_labels = ids_tensor([self.batch_size], self.num_choices)
 
-        config = CanineConfig(
+        config = self.get_config()
+
+        return config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels
+
+    def get_config(self):
+        return CanineConfig(
             hidden_size=self.hidden_size,
             num_hidden_layers=self.num_hidden_layers,
             num_attention_heads=self.num_attention_heads,
@@ -120,8 +124,6 @@ class CanineModelTester:
             initializer_range=self.initializer_range,
         )
 
-        return config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels
-
     def create_and_check_model(
         self, config, input_ids, token_type_ids, input_mask, sequence_labels, token_labels, choice_labels
     ):