65 lines
1.7 KiB
Python
65 lines
1.7 KiB
Python
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import numpy as np
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from skimage.util import crop
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from skimage._shared.testing import (assert_array_equal, assert_equal)
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def test_multi_crop():
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arr = np.arange(45).reshape(9, 5)
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out = crop(arr, ((1, 2), (2, 1)))
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assert_array_equal(out[0], [7, 8])
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assert_array_equal(out[-1], [32, 33])
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assert_equal(out.shape, (6, 2))
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def test_pair_crop():
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arr = np.arange(45).reshape(9, 5)
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out = crop(arr, (1, 2))
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assert_array_equal(out[0], [6, 7])
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assert_array_equal(out[-1], [31, 32])
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assert_equal(out.shape, (6, 2))
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def test_pair_tuple_crop():
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arr = np.arange(45).reshape(9, 5)
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out = crop(arr, ((1, 2),))
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assert_array_equal(out[0], [6, 7])
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assert_array_equal(out[-1], [31, 32])
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assert_equal(out.shape, (6, 2))
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def test_int_crop():
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arr = np.arange(45).reshape(9, 5)
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out = crop(arr, 1)
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assert_array_equal(out[0], [6, 7, 8])
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assert_array_equal(out[-1], [36, 37, 38])
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assert_equal(out.shape, (7, 3))
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def test_int_tuple_crop():
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arr = np.arange(45).reshape(9, 5)
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out = crop(arr, (1,))
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assert_array_equal(out[0], [6, 7, 8])
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assert_array_equal(out[-1], [36, 37, 38])
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assert_equal(out.shape, (7, 3))
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def test_copy_crop():
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arr = np.arange(45).reshape(9, 5)
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out0 = crop(arr, 1, copy=True)
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assert out0.flags.c_contiguous
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out0[0, 0] = 100
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assert not np.any(arr == 100)
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assert not np.may_share_memory(arr, out0)
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out1 = crop(arr, 1)
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out1[0, 0] = 100
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assert arr[1, 1] == 100
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assert np.may_share_memory(arr, out1)
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def test_zero_crop():
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arr = np.arange(45).reshape(9, 5)
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out = crop(arr, 0)
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assert out.shape == (9, 5)
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