Update expected values in constrained beam search tests (#17887)

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

tests/generation/test_generation_utils.py

@@ -2510,8 +2510,8 @@ class GenerationIntegrationTests(unittest.TestCase):
         self.assertListEqual(
             generated_text,
             [
-                "The soldiers were not prepared and didn't know how big the big weapons would be, so they scared them"
-                " off. They had no idea what to do",
+                "The soldiers were not prepared and didn't know what to do. They had no idea how they would react if"
+                " the enemy attacked them, big weapons scared"
             ],
         )
 
@@ -2549,8 +2549,9 @@ class GenerationIntegrationTests(unittest.TestCase):
         self.assertListEqual(
             generated_text,
             [
-                "The soldiers, who were all scared and screaming at each other as they tried to get out of the",
-                "The child was taken to a local hospital where she screamed and scared for her life, police said.",
+                "The soldiers, who had been stationed at the base for more than a year before being evacuated"
+                " screaming scared",
+                "The child was taken to a local hospital where he died.\n 'I don't think screaming scared",
             ],
         )
 
@@ -2585,8 +2586,9 @@ class GenerationIntegrationTests(unittest.TestCase):
         self.assertListEqual(
             generated_text,
             [
-                "The soldiers, who were all scared and screaming at each other as they tried to get out of the",
-                "The child was taken to a local hospital where she screamed and scared for her life, police said.",
+                "The soldiers, who had been stationed at the base for more than a year before being evacuated"
+                " screaming scared",
+                "The child was taken to a local hospital where he died.\n 'I don't think screaming scared",
             ],
         )
 
@@ -2612,7 +2614,7 @@ class GenerationIntegrationTests(unittest.TestCase):
 
         outputs = tokenizer.batch_decode(outputs, skip_special_tokens=True)
 
-        self.assertListEqual(outputs, ["Wie alter sind Sie?"])
+        self.assertListEqual(outputs, ["Wie alt sind Sie?"])
 
     @slow
     def test_constrained_beam_search_example_integration(self):
@@ -2656,7 +2658,7 @@ class GenerationIntegrationTests(unittest.TestCase):
         )
         outputs = tokenizer.batch_decode(outputs, skip_special_tokens=True)
 
-        self.assertListEqual(outputs, ["Wie alter sind Sie?"])
+        self.assertListEqual(outputs, ["Wie alt sind Sie?"])
 
     def test_constrained_beam_search_mixin_type_checks(self):
         tokenizer = AutoTokenizer.from_pretrained("patrickvonplaten/t5-tiny-random")