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transformers/tests/models/clip/test_processing_clip.py

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+# Copyright 2021 The HuggingFace 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 shutil
+import tempfile
+import unittest
+
+import pytest
+
+from transformers import AutoTokenizer, CLIPTokenizer, CLIPTokenizerFast
+from transformers.testing_utils import require_vision
+from transformers.utils import is_vision_available
+
+from ...test_processing_common import ProcessorTesterMixin
+
+
+if is_vision_available():
+    from transformers import CLIPImageProcessor, CLIPProcessor
+
+
+TEST_MODEL_PATH = "openai/clip-vit-base-patch32"
+
+
+@require_vision
+class CLIPProcessorTest(ProcessorTesterMixin, unittest.TestCase):
+    processor_class = CLIPProcessor
+
+    @classmethod
+    def setUpClass(cls):
+        cls.tmpdirname = tempfile.mkdtemp()
+        tokenizer = AutoTokenizer.from_pretrained(TEST_MODEL_PATH)
+        image_processor = CLIPImageProcessor.from_pretrained(TEST_MODEL_PATH)
+        processor = CLIPProcessor(
+            image_processor=image_processor,
+            tokenizer=tokenizer,
+        )
+        processor.save_pretrained(cls.tmpdirname)
+
+    @classmethod
+    def get_tokenizer(cls, **kwargs):
+        return CLIPTokenizer.from_pretrained(cls.tmpdirname, **kwargs)
+
+    @classmethod
+    def get_rust_tokenizer(cls, **kwargs):
+        return CLIPTokenizerFast.from_pretrained(cls.tmpdirname, **kwargs)
+
+    @classmethod
+    def get_image_processor(cls, **kwargs):
+        return CLIPImageProcessor.from_pretrained(cls.tmpdirname, **kwargs)
+
+    @classmethod
+    def tearDownClass(cls):
+        shutil.rmtree(cls.tmpdirname)
+
+    def test_save_load_pretrained_default(self):
+        tokenizer_slow = self.get_tokenizer()
+        tokenizer_fast = self.get_rust_tokenizer()
+        image_processor = self.get_image_processor()
+
+        with tempfile.TemporaryDirectory() as tmpdir:
+            processor_slow = CLIPProcessor(tokenizer=tokenizer_slow, image_processor=image_processor)
+            processor_slow.save_pretrained(tmpdir)
+            processor_slow = CLIPProcessor.from_pretrained(tmpdir, use_fast=False)
+
+            processor_fast = CLIPProcessor(tokenizer=tokenizer_fast, image_processor=image_processor)
+            processor_fast.save_pretrained(tmpdir)
+            processor_fast = CLIPProcessor.from_pretrained(tmpdir)
+
+        self.assertEqual(processor_slow.tokenizer.get_vocab(), tokenizer_slow.get_vocab())
+        self.assertEqual(processor_fast.tokenizer.get_vocab(), tokenizer_fast.get_vocab())
+        self.assertEqual(tokenizer_slow.get_vocab(), tokenizer_fast.get_vocab())
+        self.assertIsInstance(processor_slow.tokenizer, CLIPTokenizer)
+        self.assertIsInstance(processor_fast.tokenizer, CLIPTokenizerFast)
+
+        self.assertEqual(processor_slow.image_processor.to_json_string(), image_processor.to_json_string())
+        self.assertEqual(processor_fast.image_processor.to_json_string(), image_processor.to_json_string())
+        self.assertIsInstance(processor_slow.image_processor, CLIPImageProcessor)
+        self.assertIsInstance(processor_fast.image_processor, CLIPImageProcessor)
+
+    def test_save_load_pretrained_additional_features(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            processor = CLIPProcessor(tokenizer=self.get_tokenizer(), image_processor=self.get_image_processor())
+            processor.save_pretrained(tmpdir)
+
+            tokenizer_add_kwargs = CLIPTokenizer.from_pretrained(tmpdir, bos_token="(BOS)", eos_token="(EOS)")
+            image_processor_add_kwargs = CLIPImageProcessor.from_pretrained(
+                tmpdir, do_normalize=False, padding_value=1.0
+            )
+
+            processor = CLIPProcessor.from_pretrained(
+                tmpdir, bos_token="(BOS)", eos_token="(EOS)", do_normalize=False, padding_value=1.0
+            )
+
+        self.assertEqual(processor.tokenizer.get_vocab(), tokenizer_add_kwargs.get_vocab())
+        self.assertIsInstance(processor.tokenizer, CLIPTokenizerFast)
+
+        self.assertEqual(processor.image_processor.to_json_string(), image_processor_add_kwargs.to_json_string())
+        self.assertIsInstance(processor.image_processor, CLIPImageProcessor)
+
+    def test_image_processor(self):
+        image_processor = self.get_image_processor()
+        tokenizer = self.get_tokenizer()
+
+        processor = CLIPProcessor(tokenizer=tokenizer, image_processor=image_processor)
+
+        image_input = self.prepare_image_inputs()
+
+        input_image_proc = image_processor(image_input, return_tensors="np")
+        input_processor = processor(images=image_input, return_tensors="np")
+
+        for key in input_image_proc:
+            self.assertAlmostEqual(input_image_proc[key].sum(), input_processor[key].sum(), delta=1e-2)
+
+    def test_tokenizer(self):
+        image_processor = self.get_image_processor()
+        tokenizer = self.get_tokenizer()
+
+        processor = CLIPProcessor(tokenizer=tokenizer, image_processor=image_processor)
+
+        input_str = "lower newer"
+
+        encoded_processor = processor(text=input_str)
+
+        encoded_tok = tokenizer(input_str)
+
+        for key in encoded_tok:
+            self.assertListEqual(encoded_tok[key], encoded_processor[key])
+
+    def test_processor(self):
+        image_processor = self.get_image_processor()
+        tokenizer = self.get_tokenizer()
+
+        processor = CLIPProcessor(tokenizer=tokenizer, image_processor=image_processor)
+
+        input_str = "lower newer"
+        image_input = self.prepare_image_inputs()
+
+        inputs = processor(text=input_str, images=image_input)
+
+        self.assertSetEqual(set(inputs.keys()), {"input_ids", "attention_mask", "pixel_values"})
+
+        # test if it raises when no input is passed
+        with pytest.raises(ValueError):
+            processor()
+
+    def test_tokenizer_decode(self):
+        image_processor = self.get_image_processor()
+        tokenizer = self.get_tokenizer()
+
+        processor = CLIPProcessor(tokenizer=tokenizer, image_processor=image_processor)
+
+        predicted_ids = [[1, 4, 5, 8, 1, 0, 8], [3, 4, 3, 1, 1, 8, 9]]
+
+        decoded_processor = processor.batch_decode(predicted_ids)
+        decoded_tok = tokenizer.batch_decode(predicted_ids)
+
+        self.assertListEqual(decoded_tok, decoded_processor)