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38 lines
1.1 KiB
Python
38 lines
1.1 KiB
Python
"""Tests of r+ and w+ modes"""
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import numpy as np
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import pytest
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import rasterio
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from rasterio.errors import RasterioDeprecationWarning
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from rasterio.profiles import DefaultGTiffProfile
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def test_read_wplus_mode(tmpdir):
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"""A dataset opened in 'w+' mode can be read"""
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path = tmpdir.join('test.tif')
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profile = DefaultGTiffProfile(count=1, width=300, height=300)
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with rasterio.open(str(path), "w+", **profile) as dst:
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dst.write(255 * np.ones((1, 300, 300), dtype='uint8'))
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assert (dst.read() == 255).all()
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dst.write(3 * np.ones((1, 300, 300), dtype='uint8'))
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assert (dst.read() == 3).all()
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def test_read_w_mode_warning(tmpdir):
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"""Get a deprecation warning when reading from dataset opened in "w" mode"""
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path = tmpdir.join('test.tif')
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profile = DefaultGTiffProfile(count=1, width=300, height=300)
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with rasterio.open(str(path), "w", **profile) as dst:
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dst.write(255 * np.ones((1, 300, 300), dtype='uint8'))
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with pytest.warns(RasterioDeprecationWarning):
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assert (dst.read() == 255).all()
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