mirror of
https://github.com/wassname/scikit-image.git
synced 2026-06-27 19:48:43 +08:00
Jonathan Helmus
a47a700fe7
Unit tests in test_multi_image speed up by using a smaller gif file. New file no_time_for_that_tiny.gif file created using: gifsicle --resize 14x25 no_time_for_that.gif > no_time_for_that_tiny.gif
102 lines
3.3 KiB
Python
102 lines
3.3 KiB
Python
import os
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import numpy as np
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from numpy.testing import assert_raises, assert_equal, assert_allclose
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from skimage.io import use_plugin
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from skimage import data_dir
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from skimage.io.collection import MultiImage, ImageCollection
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import six
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class TestMultiImage():
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def setUp(self):
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# This multipage TIF file was created with imagemagick:
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# convert im1.tif im2.tif -adjoin multipage.tif
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use_plugin('pil')
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paths = [os.path.join(data_dir, 'multipage_rgb.tif'),
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os.path.join(data_dir, 'no_time_for_that_tiny.gif')]
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self.imgs = [MultiImage(paths[0]),
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MultiImage(paths[0], conserve_memory=False),
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MultiImage(paths[1]),
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MultiImage(paths[1], conserve_memory=False),
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ImageCollection(paths[0]),
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ImageCollection(paths[1], conserve_memory=False),
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ImageCollection('%s:%s' % (paths[0], paths[1]))]
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def test_shapes(self):
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img = self.imgs[-1]
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imgs = img[:]
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assert imgs[0].shape == imgs[1].shape
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assert imgs[0].shape == (10, 10, 3)
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def test_len(self):
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assert len(self.imgs[0]) == len(self.imgs[1]) == 2
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assert len(self.imgs[2]) == len(self.imgs[3]) == 24
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assert len(self.imgs[4]) == 2
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assert len(self.imgs[5]) == 24
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assert len(self.imgs[6]) == 26, len(self.imgs[6])
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def test_slicing(self):
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img = self.imgs[-1]
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assert type(img[:]) is ImageCollection
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assert len(img[:]) == 26, len(img[:])
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assert len(img[:1]) == 1
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assert len(img[1:]) == 25
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assert_allclose(img[0], img[:1][0])
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assert_allclose(img[1], img[1:][0])
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assert_allclose(img[-1], img[::-1][0])
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assert_allclose(img[0], img[::-1][-1])
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def test_getitem(self):
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for img in self.imgs:
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num = len(img)
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for i in range(-num, num):
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assert type(img[i]) is np.ndarray
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assert_allclose(img[0], img[-num])
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assert_raises(AssertionError,
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assert_allclose,
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img[0], img[1])
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# assert_raises expects a callable, hence this thin wrapper function.
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def return_img(n):
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return img[n]
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assert_raises(IndexError, return_img, num)
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assert_raises(IndexError, return_img, -num - 1)
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def test_files_property(self):
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for img in self.imgs:
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if isinstance(img, ImageCollection):
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continue
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assert isinstance(img.filename, six.string_types)
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def set_filename(f):
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img.filename = f
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assert_raises(AttributeError, set_filename, 'newfile')
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def test_conserve_memory_property(self):
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for img in self.imgs:
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assert isinstance(img.conserve_memory, bool)
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def set_mem(val):
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img.conserve_memory = val
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assert_raises(AttributeError, set_mem, True)
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def test_concatenate(self):
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for img in self.imgs:
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if img[0].shape != img[-1].shape:
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assert_raises(ValueError, img.concatenate)
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continue
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array = img.concatenate()
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assert_equal(array.shape, (len(img),) + img[0].shape)
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if __name__ == "__main__":
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from numpy.testing import run_module_suite
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run_module_suite()
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