add proper smoke test for prototype transforms (#7238)

test/test_prototype_transforms.py

 import itertools
+import pathlib
 import re
 import warnings
 from collections import defaultdict
@@ -20,15 +21,16 @@ from prototype_common_utils import (
     make_image,
     make_images,
     make_label,
-    make_masks,
     make_one_hot_labels,
     make_segmentation_mask,
     make_video,
     make_videos,
 )
+from torch.utils._pytree import tree_flatten, tree_unflatten
 from torchvision.ops.boxes import box_iou
 from torchvision.prototype import datapoints, transforms
-from torchvision.prototype.transforms.utils import check_type, is_simple_tensor
+from torchvision.prototype.transforms import functional as F
+from torchvision.prototype.transforms.utils import check_type, is_simple_tensor, query_chw
 from torchvision.transforms.functional import InterpolationMode, pil_to_tensor, to_pil_image
 
 BATCH_EXTRA_DIMS = [extra_dims for extra_dims in DEFAULT_EXTRA_DIMS if extra_dims]
@@ -66,53 +68,201 @@ def parametrize(transforms_with_inputs):
     )
 
 
-def parametrize_from_transforms(*transforms):
-    transforms_with_inputs = []
-    for transform in transforms:
-        for creation_fn in [
-            make_images,
-            make_bounding_boxes,
-            make_one_hot_labels,
-            make_vanilla_tensor_images,
-            make_pil_images,
-            make_masks,
-            make_videos,
-        ]:
-            inputs = list(creation_fn())
-            try:
-                output = transform(inputs[0])
-            except Exception:
+def auto_augment_adapter(transform, input, device):
+    adapted_input = {}
+    image_or_video_found = False
+    for key, value in input.items():
+        if isinstance(value, (datapoints.BoundingBox, datapoints.Mask)):
+            # AA transforms don't support bounding boxes or masks
+            continue
+        elif check_type(value, (datapoints.Image, datapoints.Video, is_simple_tensor, PIL.Image.Image)):
+            if image_or_video_found:
+                # AA transforms only support a single image or video
                 continue
-            else:
-                if output is inputs[0]:
-                    continue
+            image_or_video_found = True
+        adapted_input[key] = value
+    return adapted_input
+
+
+def linear_transformation_adapter(transform, input, device):
+    flat_inputs = list(input.values())
+    c, h, w = query_chw(
+        [
+            item
+            for item, needs_transform in zip(flat_inputs, transforms.Transform()._needs_transform_list(flat_inputs))
+            if needs_transform
+        ]
+    )
+    num_elements = c * h * w
+    transform.transformation_matrix = torch.randn((num_elements, num_elements), device=device)
+    transform.mean_vector = torch.randn((num_elements,), device=device)
+    return {key: value for key, value in input.items() if not isinstance(value, PIL.Image.Image)}
 
-            transforms_with_inputs.append((transform, inputs))
 
-    return parametrize(transforms_with_inputs)
+def normalize_adapter(transform, input, device):
+    adapted_input = {}
+    for key, value in input.items():
+        if isinstance(value, PIL.Image.Image):
+            # normalize doesn't support PIL images
+            continue
+        elif check_type(value, (datapoints.Image, datapoints.Video, is_simple_tensor)):
+            # normalize doesn't support integer images
+            value = F.convert_dtype(value, torch.float32)
+        adapted_input[key] = value
+    return adapted_input
 
 
 class TestSmoke:
-    @parametrize_from_transforms(
-        transforms.RandomErasing(p=1.0),
-        transforms.Resize([16, 16], antialias=True),
-        transforms.CenterCrop([16, 16]),
-        transforms.ConvertDtype(),
-        transforms.RandomHorizontalFlip(),
-        transforms.Pad(5),
-        transforms.RandomZoomOut(),
-        transforms.RandomRotation(degrees=(-45, 45)),
-        transforms.RandomAffine(degrees=(-45, 45)),
-        transforms.RandomCrop([16, 16], padding=1, pad_if_needed=True),
-        # TODO: Something wrong with input data setup. Let's fix that
-        # transforms.RandomEqualize(),
-        # transforms.RandomInvert(),
-        # transforms.RandomPosterize(bits=4),
-        # transforms.RandomSolarize(threshold=0.5),
-        # transforms.RandomAdjustSharpness(sharpness_factor=0.5),
+    @pytest.mark.parametrize(
+        ("transform", "adapter"),
+        [
+            (transforms.RandomErasing(p=1.0), None),
+            (transforms.AugMix(), auto_augment_adapter),
+            (transforms.AutoAugment(), auto_augment_adapter),
+            (transforms.RandAugment(), auto_augment_adapter),
+            (transforms.TrivialAugmentWide(), auto_augment_adapter),
+            (transforms.ColorJitter(brightness=0.1, contrast=0.2, saturation=0.3, hue=0.15), None),
+            (transforms.Grayscale(), None),
+            (transforms.RandomAdjustSharpness(sharpness_factor=0.5, p=1.0), None),
+            (transforms.RandomAutocontrast(p=1.0), None),
+            (transforms.RandomEqualize(p=1.0), None),
+            (transforms.RandomGrayscale(p=1.0), None),
+            (transforms.RandomInvert(p=1.0), None),
+            (transforms.RandomPhotometricDistort(p=1.0), None),
+            (transforms.RandomPosterize(bits=4, p=1.0), None),
+            (transforms.RandomSolarize(threshold=0.5, p=1.0), None),
+            (transforms.CenterCrop([16, 16]), None),
+            (transforms.ElasticTransform(sigma=1.0), None),
+            (transforms.Pad(4), None),
+            (transforms.RandomAffine(degrees=30.0), None),
+            (transforms.RandomCrop([16, 16], pad_if_needed=True), None),
+            (transforms.RandomHorizontalFlip(p=1.0), None),
+            (transforms.RandomPerspective(p=1.0), None),
+            (transforms.RandomResize(min_size=10, max_size=20), None),
+            (transforms.RandomResizedCrop([16, 16]), None),
+            (transforms.RandomRotation(degrees=30), None),
+            (transforms.RandomShortestSize(min_size=10), None),
+            (transforms.RandomVerticalFlip(p=1.0), None),
+            (transforms.RandomZoomOut(p=1.0), None),
+            (transforms.Resize([16, 16], antialias=True), None),
+            (transforms.ScaleJitter((16, 16), scale_range=(0.8, 1.2)), None),
+            (transforms.ClampBoundingBoxes(), None),
+            (transforms.ConvertBoundingBoxFormat(datapoints.BoundingBoxFormat.CXCYWH), None),
+            (transforms.ConvertDtype(), None),
+            (transforms.GaussianBlur(kernel_size=3), None),
+            (
+                transforms.LinearTransformation(
+                    # These are just dummy values that will be filled by the adapter. We can't define them upfront,
+                    # because for we neither know the spatial size nor the device at this point
+                    transformation_matrix=torch.empty((1, 1)),
+                    mean_vector=torch.empty((1,)),
+                ),
+                linear_transformation_adapter,
+            ),
+            (transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]), normalize_adapter),
+            (transforms.ToDtype(torch.float64), None),
+            (transforms.UniformTemporalSubsample(num_samples=2), None),
+        ],
+        ids=lambda transform: type(transform).__name__,
     )
-    def test_common(self, transform, input):
-        transform(input)
+    @pytest.mark.parametrize("container_type", [dict, list, tuple])
+    @pytest.mark.parametrize(
+        "image_or_video",
+        [
+            make_image(),
+            make_video(),
+            next(make_pil_images(color_spaces=["RGB"])),
+            next(make_vanilla_tensor_images()),
+        ],
+    )
+    @pytest.mark.parametrize("device", cpu_and_gpu())
+    def test_common(self, transform, adapter, container_type, image_or_video, device):
+        spatial_size = F.get_spatial_size(image_or_video)
+        input = dict(
+            image_or_video=image_or_video,
+            image_datapoint=make_image(size=spatial_size),
+            video_datapoint=make_video(size=spatial_size),
+            image_pil=next(make_pil_images(sizes=[spatial_size], color_spaces=["RGB"])),
+            bounding_box_xyxy=make_bounding_box(
+                format=datapoints.BoundingBoxFormat.XYXY, spatial_size=spatial_size, extra_dims=(3,)
+            ),
+            bounding_box_xywh=make_bounding_box(
+                format=datapoints.BoundingBoxFormat.XYWH, spatial_size=spatial_size, extra_dims=(4,)
+            ),
+            bounding_box_cxcywh=make_bounding_box(
+                format=datapoints.BoundingBoxFormat.CXCYWH, spatial_size=spatial_size, extra_dims=(5,)
+            ),
+            bounding_box_degenerate_xyxy=datapoints.BoundingBox(
+                [
+                    [0, 0, 0, 0],  # no height or width
+                    [0, 0, 0, 1],  # no height
+                    [0, 0, 1, 0],  # no width
+                    [2, 0, 1, 1],  # x1 > x2, y1 < y2
+                    [0, 2, 1, 1],  # x1 < x2, y1 > y2
+                    [2, 2, 1, 1],  # x1 > x2, y1 > y2
+                ],
+                format=datapoints.BoundingBoxFormat.XYXY,
+                spatial_size=spatial_size,
+            ),
+            bounding_box_degenerate_xywh=datapoints.BoundingBox(
+                [
+                    [0, 0, 0, 0],  # no height or width
+                    [0, 0, 0, 1],  # no height
+                    [0, 0, 1, 0],  # no width
+                    [0, 0, 1, -1],  # negative height
+                    [0, 0, -1, 1],  # negative width
+                    [0, 0, -1, -1],  # negative height and width
+                ],
+                format=datapoints.BoundingBoxFormat.XYWH,
+                spatial_size=spatial_size,
+            ),
+            bounding_box_degenerate_cxcywh=datapoints.BoundingBox(
+                [
+                    [0, 0, 0, 0],  # no height or width
+                    [0, 0, 0, 1],  # no height
+                    [0, 0, 1, 0],  # no width
+                    [0, 0, 1, -1],  # negative height
+                    [0, 0, -1, 1],  # negative width
+                    [0, 0, -1, -1],  # negative height and width
+                ],
+                format=datapoints.BoundingBoxFormat.CXCYWH,
+                spatial_size=spatial_size,
+            ),
+            detection_mask=make_detection_mask(size=spatial_size),
+            segmentation_mask=make_segmentation_mask(size=spatial_size),
+            int=0,
+            float=0.0,
+            bool=True,
+            none=None,
+            str="str",
+            path=pathlib.Path.cwd(),
+            object=object(),
+            tensor=torch.empty(5),
+            array=np.empty(5),
+        )
+        if adapter is not None:
+            input = adapter(transform, input, device)
+
+        if container_type in {tuple, list}:
+            input = container_type(input.values())
+
+        input_flat, input_spec = tree_flatten(input)
+        input_flat = [item.to(device) if isinstance(item, torch.Tensor) else item for item in input_flat]
+        input = tree_unflatten(input_flat, input_spec)
+
+        torch.manual_seed(0)
+        output = transform(input)
+        output_flat, output_spec = tree_flatten(output)
+
+        assert output_spec == input_spec
+
+        for output_item, input_item, should_be_transformed in zip(
+            output_flat, input_flat, transforms.Transform()._needs_transform_list(input_flat)
+        ):
+            if should_be_transformed:
+                assert type(output_item) is type(input_item)
+            else:
+                assert output_item is input_item
 
     @parametrize(
         [