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46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
import rasterio
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def test_checksum_band():
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with rasterio.open('tests/data/RGB.byte.tif') as src:
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checksums = [src.checksum(i) for i in src.indexes]
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assert checksums == [25420, 29131, 37860]
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def test_checksum_band_window():
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with rasterio.open('tests/data/RGB.byte.tif') as src:
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window = ((0, src.height), (0, src.width))
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checksums = [src.checksum(i, window=window) for i in src.indexes]
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assert checksums == [25420, 29131, 37860]
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def test_checksum_band_window_min():
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with rasterio.open('tests/data/RGB.byte.tif') as src:
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window = ((0, 1), (0, 1))
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checksums = [src.checksum(i, window=window) for i in src.indexes]
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assert checksums == [0, 0, 0]
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def test_checksum_band_window_quarter():
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"""A quarter window's checksum is different from the full image's"""
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with rasterio.open('tests/data/RGB.byte.tif') as src:
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window = ((0, src.height//2), (0, src.width//2))
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checksums = [src.checksum(i, window=window) for i in src.indexes]
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assert checksums != [25420, 29131, 37860]
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def test_checksum_band_window_too_tall():
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"""Windows get truncated to maximum extent"""
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with rasterio.open('tests/data/RGB.byte.tif') as src:
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window = ((0, 10000), (0, src.width))
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checksums = [src.checksum(i, window=window) for i in src.indexes]
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assert checksums == [25420, 29131, 37860]
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def test_checksum_band_window_too_short():
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"""Negative values in windows get evaluated properly"""
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with rasterio.open('tests/data/RGB.byte.tif') as src:
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window = ((0, -1), (0, src.width))
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checksums = [src.checksum(i, window=window) for i in src.indexes]
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assert checksums == [25420, 29131, 37860]
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