init

transformers/tests/models/ovis2/test_processor_ovis2.py

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+# coding=utf-8
+# Copyright 2025 The HuggingFace Inc. team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import json
+import shutil
+import tempfile
+import unittest
+
+from transformers.testing_utils import require_av, require_vision
+from transformers.utils import is_vision_available
+
+from ...test_processing_common import ProcessorTesterMixin
+
+
+if is_vision_available():
+    from transformers import (
+        AutoProcessor,
+        Ovis2ImageProcessor,
+        Ovis2Processor,
+        Qwen2TokenizerFast,
+    )
+
+
+@require_vision
+class Ovis2ProcessorTest(ProcessorTesterMixin, unittest.TestCase):
+    processor_class = Ovis2Processor
+
+    def setUp(self):
+        self.tmpdirname = tempfile.mkdtemp()
+        image_processor = Ovis2ImageProcessor()
+        tokenizer = Qwen2TokenizerFast.from_pretrained("thisisiron/Ovis2-1B-hf")
+        processor_kwargs = self.prepare_processor_dict()
+
+        processor = Ovis2Processor(image_processor=image_processor, tokenizer=tokenizer, **processor_kwargs)
+        processor.save_pretrained(self.tmpdirname)
+
+    def get_tokenizer(self, **kwargs):
+        return AutoProcessor.from_pretrained(self.tmpdirname, **kwargs).tokenizer
+
+    def get_image_processor(self, **kwargs):
+        return AutoProcessor.from_pretrained(self.tmpdirname, **kwargs).image_processor
+
+    def prepare_processor_dict(self):
+        return {
+            "chat_template": "<|im_start|>system\nYou are a helpful assistant.<|im_end|>\n{% for message in messages %}{{'<|im_start|>' + message['role'] + '\n'}}{% if message['content'] is string %}{{ message['content'] }}{% else %}{% for content in message['content'] %}{% if content['type'] == 'image' %}{{ '<image>\n' }}{% elif content['type'] == 'text' %}{{ content['text'] }}{% endif %}{% endfor %}{% endif %}{{'<|im_end|>\n'}}{% endfor %}{% if add_generation_prompt %}{{'<|im_start|>assistant\n' }}{% endif %}",
+        }  # fmt: skip
+
+    def test_processor_to_json_string(self):
+        processor = self.get_processor()
+        obj = json.loads(processor.to_json_string())
+        for key, value in self.prepare_processor_dict().items():
+            # chat_tempalate are tested as a separate test because they are saved in separate files
+            if key != "chat_template":
+                self.assertEqual(obj[key], value)
+                self.assertEqual(getattr(processor, key, None), value)
+
+    def test_chat_template_is_saved(self):
+        processor_loaded = self.processor_class.from_pretrained(self.tmpdirname)
+        processor_dict_loaded = json.loads(processor_loaded.to_json_string())
+        # chat templates aren't serialized to json in processors
+        self.assertFalse("chat_template" in processor_dict_loaded)
+
+        # they have to be saved as separate file and loaded back from that file
+        # so we check if the same template is loaded
+        processor_dict = self.prepare_processor_dict()
+        self.assertTrue(processor_loaded.chat_template == processor_dict.get("chat_template", None))
+
+    def tearDown(self):
+        shutil.rmtree(self.tmpdirname)
+
+    def test_chat_template(self):
+        processor = AutoProcessor.from_pretrained("thisisiron/Ovis2-1B-hf")
+        expected_prompt = "<|im_start|>system\nYou are a helpful assistant.<|im_end|>\n<|im_start|>user\n<image>\nWhat is shown in this image?<|im_end|>\n<|im_start|>assistant\n"
+
+        messages = [
+            {
+                "role": "user",
+                "content": [
+                    {"type": "image"},
+                    {"type": "text", "text": "What is shown in this image?"},
+                ],
+            },
+        ]
+
+        formatted_prompt = processor.apply_chat_template(messages, add_generation_prompt=True)
+        self.assertEqual(expected_prompt, formatted_prompt)
+
+    @require_av
+    def test_chat_template_dict(self):
+        processor = AutoProcessor.from_pretrained("thisisiron/Ovis2-1B-hf")
+        messages = [
+            {
+                "role": "user",
+                "content": [
+                    {"type": "image"},
+                    {"type": "text", "text": "What is shown in this image?"},
+                ],
+            },
+        ]
+
+        formatted_prompt_tokenized = processor.apply_chat_template(messages, add_generation_prompt=True, tokenize=True)
+        expected_output = [[151644, 8948, 198, 2610, 525, 264, 10950, 17847, 13, 151645, 198, 151644, 872, 198, 27, 1805, 397, 3838, 374, 6839, 304, 419, 2168, 30, 151645, 198, 151644, 77091, 198]]  # fmt: skip
+        self.assertListEqual(expected_output, formatted_prompt_tokenized)
+
+        out_dict = processor.apply_chat_template(messages, add_generation_prompt=True, tokenize=True, return_dict=True)
+        self.assertListEqual(list(out_dict.keys()), ["input_ids", "attention_mask"])