[cleanup/marian] pipelines test and new kwarg (#4812)

tests/test_modeling_marian.py

@@ -38,6 +38,7 @@ if is_torch_available():
         convert_opus_name_to_hf_name,
         ORG_NAME,
     )
+    from transformers.pipelines import TranslationPipeline
 
 
 class ModelManagementTests(unittest.TestCase):
@@ -189,6 +190,7 @@ class TestMarian_RU_FR(MarianIntegrationTest):
     src_text = ["Он показал мне рукопись своей новой пьесы."]
     expected_text = ["Il m'a montré le manuscrit de sa nouvelle pièce."]
 
+    @slow
     def test_batch_generation_ru_fr(self):
         self._assert_generated_batch_equal_expected()
 
@@ -199,6 +201,7 @@ class TestMarian_MT_EN(MarianIntegrationTest):
     src_text = ["Billi messu b'mod ġentili, Ġesù fejjaq raġel li kien milqut bil - marda kerha tal - ġdiem."]
     expected_text = ["Touching gently, Jesus healed a man who was affected by the sad disease of leprosy."]
 
+    @slow
     def test_batch_generation_mt_en(self):
         self._assert_generated_batch_equal_expected()
 
@@ -229,6 +232,11 @@ class TestMarian_en_ROMANCE(MarianIntegrationTest):
         with self.assertRaises(ValueError):
             self.tokenizer.prepare_translation_batch([""])
 
+    def test_pipeline(self):
+        pipeline = TranslationPipeline(self.model, self.tokenizer, framework="pt")
+        output = pipeline(self.src_text)
+        self.assertEqual(self.expected_text, [x["translation_text"] for x in output])
+
 
 @require_torch
 class TestConversionUtils(unittest.TestCase):