Add tests to tensor v2

[ternaus]

Summary by Sourcery

Add a new test case for the ToTensorV2 transformation to ensure images and masks are correctly converted to torch.Tensor, and remove the unused 'apply_to_images' method from the transforms module.

Enhancements:

• Remove the 'apply_to_images' method from the ToTensorV2 class in the transforms module.

Tests:

• Add new test case 'test_to_tensor_v2_images_masks' to verify the conversion of images and masks to torch.Tensor using ToTensorV2.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR adds test coverage for the ToTensorV2 transform's handling of multiple data types (images and masks) and removes a redundant method. The changes focus on verifying that the transform correctly converts numpy arrays to PyTorch tensors for both single and multiple inputs.

Sequence diagram for test_to_tensor_v2_images_masks

sequenceDiagram
    actor Tester
    participant Transform as A.Compose([ToTensorV2(p=1)])
    participant Image as SQUARE_UINT8_IMAGE
    participant Mask as np.random.randint
    participant Transformed

    Tester->>Transform: Create transform
    Tester->>Image: Prepare image
    Tester->>Mask: Prepare mask
    Tester->>Transform: Call transform with image, mask, masks, images
    Transform->>Transformed: Return transformed data
    Tester->>Transformed: Assert transformed['image'] is torch.Tensor
    Tester->>Transformed: Assert transformed['mask'] is torch.Tensor
    Tester->>Transformed: Assert all transformed['masks'] are torch.Tensor
    Tester->>Transformed: Assert all transformed['images'] are torch.Tensor

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Class diagram for ToTensorV2 transform changes

classDiagram
    class ToTensorV2 {
        +apply(img: np.ndarray, **params: Any) torch.Tensor
        +apply_to_mask(mask: np.ndarray, **params: Any) torch.Tensor
    }
    note for ToTensorV2 "Removed method: apply_to_images(images: list[np.ndarray], **params: Any) list[torch.Tensor]"

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File-Level Changes

Change	Details	Files
Added new test case for ToTensorV2 transform with multiple input types	Added test to verify transformation of single image and mask Added test to verify transformation of multiple images and masks Validates that all outputs are correctly converted to torch.Tensor type	tests/test_pytorch.py
Removed redundant apply_to_images method	Removed method that was a simple list comprehension of the apply method	albumentations/pytorch/transforms.py

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[sourcery-ai]

Hey @ternaus - I've reviewed your changes - here's some feedback:

Overall Comments:

• The PR removes the apply_to_images method without explanation. Please provide context for why this method is being removed and confirm this won't break existing functionality.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟡 Testing: 2 issues found
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.32%. Comparing base (b1a79c2) to head (2b10b9f).
Report is 227 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##           main    #2015       +/-   ##
=========================================
+ Coverage      0   90.32%   +90.32%     
=========================================
  Files         0       47       +47     
  Lines         0     7558     +7558     
=========================================
+ Hits          0     6827     +6827     
- Misses        0      731      +731     

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