Fix past CI (#20967)

* Fix for Past CI

* make style

* clean up

* unindent 2 blocks

Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>

tests/models/gpt2/test_tokenization_gpt2_tf.py

@@ -4,15 +4,15 @@ from tempfile import TemporaryDirectory
 
 from transformers import AutoConfig, TFGPT2LMHeadModel, is_keras_nlp_available, is_tf_available
 from transformers.models.gpt2.tokenization_gpt2 import GPT2Tokenizer
-from transformers.testing_utils import require_keras_nlp, slow
+from transformers.testing_utils import require_keras_nlp, require_tf, slow
 
 
-if is_keras_nlp_available():
-    from transformers.models.gpt2 import TFGPT2Tokenizer
-
 if is_tf_available():
     import tensorflow as tf
 
+if is_keras_nlp_available():
+    from transformers.models.gpt2 import TFGPT2Tokenizer
+
 
 TOKENIZER_CHECKPOINTS = ["gpt2"]
 TINY_MODEL_CHECKPOINT = "gpt2"
@@ -40,6 +40,7 @@ if is_tf_available():
             return outputs
 
 
+@require_tf
 @require_keras_nlp
 class GPTTokenizationTest(unittest.TestCase):
     # The TF tokenizers are usually going to be used as pretrained tokenizers from existing model checkpoints,