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transformers/tests/models/cvt/test_modeling_cvt.py

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+# Copyright 2022 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.
+"""Testing suite for the PyTorch CvT model."""
+
+import unittest
+from functools import cached_property
+from math import floor
+
+from transformers import CvtConfig
+from transformers.file_utils import is_torch_available, is_vision_available
+from transformers.testing_utils import require_torch, require_vision, slow, torch_device
+
+from ...test_configuration_common import ConfigTester
+from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor
+from ...test_pipeline_mixin import PipelineTesterMixin
+
+
+if is_torch_available():
+    import torch
+
+    from transformers import CvtForImageClassification, CvtModel
+
+
+if is_vision_available():
+    from PIL import Image
+
+    from transformers import AutoImageProcessor
+
+
+class CvtConfigTester(ConfigTester):
+    def create_and_test_config_common_properties(self):
+        config = self.config_class(**self.inputs_dict)
+        self.parent.assertTrue(hasattr(config, "embed_dim"))
+        self.parent.assertTrue(hasattr(config, "num_heads"))
+
+
+class CvtModelTester:
+    def __init__(
+        self,
+        parent,
+        batch_size=13,
+        image_size=64,
+        num_channels=3,
+        embed_dim=[16, 32, 48],
+        num_heads=[1, 2, 3],
+        depth=[1, 2, 10],
+        patch_sizes=[7, 3, 3],
+        patch_stride=[4, 2, 2],
+        patch_padding=[2, 1, 1],
+        stride_kv=[2, 2, 2],
+        cls_token=[False, False, True],
+        attention_drop_rate=[0.0, 0.0, 0.0],
+        initializer_range=0.02,
+        layer_norm_eps=1e-12,
+        is_training=True,
+        use_labels=True,
+        num_labels=2,  # Check
+    ):
+        self.parent = parent
+        self.batch_size = batch_size
+        self.image_size = image_size
+        self.patch_sizes = patch_sizes
+        self.patch_stride = patch_stride
+        self.patch_padding = patch_padding
+        self.is_training = is_training
+        self.use_labels = use_labels
+        self.num_labels = num_labels
+        self.num_channels = num_channels
+        self.embed_dim = embed_dim
+        self.num_heads = num_heads
+        self.stride_kv = stride_kv
+        self.depth = depth
+        self.cls_token = cls_token
+        self.attention_drop_rate = attention_drop_rate
+        self.initializer_range = initializer_range
+        self.layer_norm_eps = layer_norm_eps
+
+    def prepare_config_and_inputs(self):
+        pixel_values = floats_tensor([self.batch_size, self.num_channels, self.image_size, self.image_size])
+
+        labels = None
+        if self.use_labels:
+            labels = ids_tensor([self.batch_size], self.num_labels)
+
+        config = self.get_config()
+        return config, pixel_values, labels
+
+    def get_config(self):
+        return CvtConfig(
+            image_size=self.image_size,
+            num_labels=self.num_labels,
+            num_channels=self.num_channels,
+            embed_dim=self.embed_dim,
+            num_heads=self.num_heads,
+            patch_sizes=self.patch_sizes,
+            patch_padding=self.patch_padding,
+            patch_stride=self.patch_stride,
+            stride_kv=self.stride_kv,
+            depth=self.depth,
+            cls_token=self.cls_token,
+            attention_drop_rate=self.attention_drop_rate,
+            initializer_range=self.initializer_range,
+        )
+
+    def create_and_check_model(self, config, pixel_values, labels):
+        model = CvtModel(config=config)
+        model.to(torch_device)
+        model.eval()
+        result = model(pixel_values)
+        image_size = (self.image_size, self.image_size)
+        height, width = image_size[0], image_size[1]
+        for i in range(len(self.depth)):
+            height = floor(((height + 2 * self.patch_padding[i] - self.patch_sizes[i]) / self.patch_stride[i]) + 1)
+            width = floor(((width + 2 * self.patch_padding[i] - self.patch_sizes[i]) / self.patch_stride[i]) + 1)
+        self.parent.assertEqual(result.last_hidden_state.shape, (self.batch_size, self.embed_dim[-1], height, width))
+
+    def create_and_check_for_image_classification(self, config, pixel_values, labels):
+        config.num_labels = self.num_labels
+        model = CvtForImageClassification(config)
+        model.to(torch_device)
+        model.eval()
+        result = model(pixel_values, labels=labels)
+        self.parent.assertEqual(result.logits.shape, (self.batch_size, self.num_labels))
+
+    def prepare_config_and_inputs_for_common(self):
+        config_and_inputs = self.prepare_config_and_inputs()
+        config, pixel_values, labels = config_and_inputs
+        inputs_dict = {"pixel_values": pixel_values}
+        return config, inputs_dict
+
+
+@require_torch
+class CvtModelTest(ModelTesterMixin, PipelineTesterMixin, unittest.TestCase):
+    """
+    Here we also overwrite some of the tests of test_modeling_common.py, as Cvt does not use input_ids, inputs_embeds,
+    attention_mask and seq_length.
+    """
+
+    all_model_classes = (CvtModel, CvtForImageClassification) if is_torch_available() else ()
+    pipeline_model_mapping = (
+        {"image-feature-extraction": CvtModel, "image-classification": CvtForImageClassification}
+        if is_torch_available()
+        else {}
+    )
+
+    test_pruning = False
+    test_torchscript = False
+    test_resize_embeddings = False
+    test_head_masking = False
+    has_attentions = False
+    test_torch_exportable = True
+
+    def setUp(self):
+        self.model_tester = CvtModelTester(self)
+        self.config_tester = ConfigTester(
+            self,
+            config_class=CvtConfig,
+            has_text_modality=False,
+            hidden_size=37,
+            common_properties=["hidden_size", "num_channels"],
+        )
+
+    def test_config(self):
+        self.config_tester.run_common_tests()
+
+    @unittest.skip(reason="Cvt does not output attentions")
+    def test_attention_outputs(self):
+        pass
+
+    @unittest.skip(reason="Cvt does not use inputs_embeds")
+    def test_inputs_embeds(self):
+        pass
+
+    @unittest.skip(reason="Cvt does not support input and output embeddings")
+    def test_model_get_set_embeddings(self):
+        pass
+
+    # Larger differences on A10 than T4
+    def test_batching_equivalence(self, atol=2e-4, rtol=2e-4):
+        super().test_batching_equivalence(atol=atol, rtol=rtol)
+
+    def test_model(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_model(*config_and_inputs)
+
+    def test_hidden_states_output(self):
+        def check_hidden_states_output(inputs_dict, config, model_class):
+            model = model_class(config)
+            model.to(torch_device)
+            model.eval()
+
+            with torch.no_grad():
+                outputs = model(**self._prepare_for_class(inputs_dict, model_class))
+
+            hidden_states = outputs.hidden_states
+
+            expected_num_layers = len(self.model_tester.depth)
+            self.assertEqual(len(hidden_states), expected_num_layers)
+
+            # verify the first hidden states (first block)
+            self.assertListEqual(
+                list(hidden_states[0].shape[-3:]),
+                [
+                    self.model_tester.embed_dim[0],
+                    self.model_tester.image_size // 4,
+                    self.model_tester.image_size // 4,
+                ],
+            )
+
+        config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
+
+        for model_class in self.all_model_classes:
+            inputs_dict["output_hidden_states"] = True
+            check_hidden_states_output(inputs_dict, config, model_class)
+
+            # check that output_hidden_states also work using config
+            del inputs_dict["output_hidden_states"]
+            config.output_hidden_states = True
+
+            check_hidden_states_output(inputs_dict, config, model_class)
+
+    def test_for_image_classification(self):
+        config_and_inputs = self.model_tester.prepare_config_and_inputs()
+        self.model_tester.create_and_check_for_image_classification(*config_and_inputs)
+
+    @slow
+    def test_model_from_pretrained(self):
+        model_name = "microsoft/cvt-13"
+        model = CvtModel.from_pretrained(model_name)
+        self.assertIsNotNone(model)
+
+
+# We will verify our results on an image of cute cats
+def prepare_img():
+    image = Image.open("./tests/fixtures/tests_samples/COCO/000000039769.png")
+    return image
+
+
+@require_torch
+@require_vision
+class CvtModelIntegrationTest(unittest.TestCase):
+    @cached_property
+    def default_image_processor(self):
+        return AutoImageProcessor.from_pretrained("microsoft/cvt-13")
+
+    @slow
+    def test_inference_image_classification_head(self):
+        model = CvtForImageClassification.from_pretrained("microsoft/cvt-13").to(torch_device)
+
+        image_processor = self.default_image_processor
+        image = prepare_img()
+        inputs = image_processor(images=image, return_tensors="pt").to(torch_device)
+
+        # forward pass
+        with torch.no_grad():
+            outputs = model(**inputs)
+
+        # verify the logits
+        expected_shape = torch.Size((1, 1000))
+        self.assertEqual(outputs.logits.shape, expected_shape)
+
+        expected_slice = torch.tensor([0.9287, 0.9016, -0.3152]).to(torch_device)
+
+        torch.testing.assert_close(outputs.logits[0, :3], expected_slice, rtol=2e-4, atol=2e-4)