Generate: left-padding test, revisited (#29515)

* left-padding test revisited

* Apply suggestions from code review

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

---------

Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>

tests/models/bart/test_modeling_bart.py

@@ -1527,7 +1527,3 @@ class BartStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMixin, un
 
     def test_save_load_fast_init_from_base(self):
         pass
-
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass

tests/models/bigbird_pegasus/test_modeling_bigbird_pegasus.py

@@ -818,7 +818,3 @@ class BigBirdPegasusStandaloneDecoderModelTest(ModelTesterMixin, GenerationTeste
     def test_retain_grad_hidden_states_attentions(self):
         # decoder cannot keep gradients
         return
-
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass

tests/models/blenderbot/test_modeling_blenderbot.py

@@ -569,7 +569,3 @@ class BlenderbotStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMix
     def test_retain_grad_hidden_states_attentions(self):
         # decoder cannot keep gradients
         return
-
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass

tests/models/blenderbot_small/test_modeling_blenderbot_small.py

@@ -568,7 +568,3 @@ class BlenderbotSmallStandaloneDecoderModelTest(ModelTesterMixin, GenerationTest
     def test_retain_grad_hidden_states_attentions(self):
         # decoder cannot keep gradients
         return
-
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass

tests/models/ctrl/test_modeling_ctrl.py

@@ -249,10 +249,6 @@ class CTRLModelTest(ModelTesterMixin, GenerationTesterMixin, PipelineTesterMixin
             model = CTRLModel.from_pretrained(model_name)
             self.assertIsNotNone(model)
 
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass
-
 
 @require_torch
 class CTRLModelLanguageGenerationTest(unittest.TestCase):

tests/models/marian/test_modeling_marian.py

@@ -895,7 +895,3 @@ class MarianStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMixin,
     def test_retain_grad_hidden_states_attentions(self):
         # decoder cannot keep gradients
         return
-
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass

tests/models/mbart/test_modeling_mbart.py

@@ -736,7 +736,3 @@ class MBartStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMixin, u
     def test_retain_grad_hidden_states_attentions(self):
         # decoder cannot keep gradients
         return
-
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass

tests/models/mvp/test_modeling_mvp.py

@@ -823,7 +823,3 @@ class MvpStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMixin, uni
     def test_retain_grad_hidden_states_attentions(self):
         # decoder cannot keep gradients
         return
-
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass

tests/models/pegasus/test_modeling_pegasus.py

@@ -596,7 +596,3 @@ class PegasusStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMixin,
     def test_retain_grad_hidden_states_attentions(self):
         # decoder cannot keep gradients
         return
-
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass

tests/models/plbart/test_modeling_plbart.py

@@ -669,7 +669,3 @@ class PLBartStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMixin,
     def test_retain_grad_hidden_states_attentions(self):
         # decoder cannot keep gradients
         return
-
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass

tests/models/prophetnet/test_modeling_prophetnet.py

@@ -1146,10 +1146,6 @@ class ProphetNetStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMix
         # decoder cannot keep gradients
         return
 
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass
-
 
 @require_torch
 class ProphetNetStandaloneEncoderModelTest(ModelTesterMixin, unittest.TestCase):

tests/models/whisper/test_modeling_whisper.py

@@ -3230,7 +3230,3 @@ class WhisperStandaloneDecoderModelTest(ModelTesterMixin, GenerationTesterMixin,
     @unittest.skip("The model doesn't support fast init from base")
     def test_save_load_fast_init_from_base(self):
         pass
-
-    @unittest.skip("The model doesn't support left padding")  # and it's not used enough to be worth fixing :)
-    def test_left_padding_compatibility(self):
-        pass