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79 lines
2.8 KiB
Python
79 lines
2.8 KiB
Python
"""Tests for image processing and thumbnail generation."""
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import io
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from uuid import uuid4
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from PIL import Image as PILImage
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from app.images.processing import generate_thumbnails
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class TestThumbnailGeneration:
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"""Tests for thumbnail generation."""
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def test_generate_thumbnails_creates_all_sizes(self):
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"""Test that thumbnails are generated for all quality levels."""
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# Create a test image
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image_id = uuid4()
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image = PILImage.new("RGB", (2000, 1500), color="red")
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buffer = io.BytesIO()
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image.save(buffer, format="JPEG")
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contents = buffer.getvalue()
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# Mock storage client to avoid actual uploads
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from unittest.mock import MagicMock, patch
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with patch("app.images.processing.get_storage_client") as mock_storage:
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mock_storage.return_value.put_object = MagicMock()
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# Generate thumbnails
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thumbnail_paths = generate_thumbnails(image_id, "test/path.jpg", contents)
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# Verify all sizes created
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assert "low" in thumbnail_paths
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assert "medium" in thumbnail_paths
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assert "high" in thumbnail_paths
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# Verify storage was called
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assert mock_storage.return_value.put_object.call_count >= 2
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def test_skip_thumbnail_for_small_images(self):
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"""Test that thumbnails are skipped if image is smaller than target size."""
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# Create a small test image (smaller than low quality threshold)
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image_id = uuid4()
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image = PILImage.new("RGB", (500, 375), color="blue")
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buffer = io.BytesIO()
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image.save(buffer, format="JPEG")
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contents = buffer.getvalue()
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from unittest.mock import MagicMock, patch
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with patch("app.images.processing.get_storage_client") as mock_storage:
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mock_storage.return_value.put_object = MagicMock()
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# Generate thumbnails
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thumbnail_paths = generate_thumbnails(image_id, "test/small.jpg", contents)
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# Should use original path for all sizes
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assert thumbnail_paths["low"] == "test/small.jpg"
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def test_handles_transparent_images(self):
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"""Test conversion of transparent images to RGB."""
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# Create RGBA image
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image_id = uuid4()
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image = PILImage.new("RGBA", (2000, 1500), color=(255, 0, 0, 128))
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buffer = io.BytesIO()
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image.save(buffer, format="PNG")
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contents = buffer.getvalue()
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from unittest.mock import MagicMock, patch
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with patch("app.images.processing.get_storage_client") as mock_storage:
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mock_storage.return_value.put_object = MagicMock()
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# Should not raise exception
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thumbnail_paths = generate_thumbnails(image_id, "test/transparent.png", contents)
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assert len(thumbnail_paths) > 0
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