fix test_phi3v (#15321)

Signed-off-by: pansicheng <sicheng.pan.chn@gmail.com>

tests/models/embedding/vision_language/test_phi3v.py

@@ -2,6 +2,10 @@
 
 import pytest
 import torch.nn.functional as F
+from PIL import Image
+
+from vllm.assets.base import get_vllm_public_assets
+from vllm.assets.image import VLM_IMAGES_DIR
 
 from ....conftest import IMAGE_ASSETS, HfRunner, PromptImageInput, VllmRunner
 from ....utils import large_gpu_test
@@ -112,6 +116,15 @@ def test_models_image(
         (text, asset.pil_image)
         for text, asset in zip(HF_IMAGE_PROMPTS, image_assets)
     ]
+    # add cases for special_tokens
+    input_texts_images.append((
+        "\n<s><|user|>\n <|image_1|>\n\t <s>"
+        "Represent the given image for classification<|end|>"
+        "\n<|assistant|>\n",
+        Image.open(
+            get_vllm_public_assets(filename="cherry_blossom.jpg",
+                                   s3_prefix=VLM_IMAGES_DIR)),
+    ))
     input_texts = [text for text, _ in input_texts_images]
     input_images = [image for _, image in input_texts_images]