Sync from v0.13

tests/test_seed_behavior.py

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+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+import random
+
+import numpy as np
+import torch
+
+from vllm.platforms.interface import Platform
+
+
+def test_seed_behavior():
+    # Test with a specific seed
+    Platform.seed_everything(42)
+    random_value_1 = random.randint(0, 100)
+    np_random_value_1 = np.random.randint(0, 100)
+    torch_random_value_1 = torch.randint(0, 100, (1,)).item()
+
+    Platform.seed_everything(42)
+    random_value_2 = random.randint(0, 100)
+    np_random_value_2 = np.random.randint(0, 100)
+    torch_random_value_2 = torch.randint(0, 100, (1,)).item()
+
+    assert random_value_1 == random_value_2
+    assert np_random_value_1 == np_random_value_2
+    assert torch_random_value_1 == torch_random_value_2