44546f85d9
* Finds the location of the skpdiff binary. * Calculates the perceptual difference percentage using the skpdiff binary (treats -1 as 0% perceptual similarity). * Replaces the weightedDiffMeasure in view.html with perceptualDifferent. BUG=skia:2019 NOTRY=true Committed: http://code.google.com/p/skia/source/detail?r=13398 R=epoger@google.com Author: rmistry@google.com Review URL: https://codereview.chromium.org/147453003 git-svn-id: http://skia.googlecode.com/svn/trunk@13410 2bbb7eff-a529-9590-31e7-b0007b416f81
104 lines
3.5 KiB
Python
Executable File
104 lines
3.5 KiB
Python
Executable File
#!/usr/bin/python
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"""
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Copyright 2013 Google Inc.
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Use of this source code is governed by a BSD-style license that can be
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found in the LICENSE file.
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Test imagediffdb.py
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"""
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# System-level imports
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import logging
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import shutil
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import tempfile
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import unittest
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# Local imports
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import imagediffdb
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IMG_URL_BASE = ('http://chromium-skia-gm.commondatastorage.googleapis.com/gm/'
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'bitmap-64bitMD5/')
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class ImageDiffDbTest(unittest.TestCase):
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def setUp(self):
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self._temp_dir = tempfile.mkdtemp()
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self.maxDiff = None
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def tearDown(self):
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shutil.rmtree(self._temp_dir)
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def shortDescription(self):
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"""Tell unittest framework to not print docstrings for test cases."""
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return None
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def test_sanitize_locator(self):
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"""Test _sanitize_locator()."""
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self.assertEqual(imagediffdb._sanitize_locator('simple'), 'simple')
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self.assertEqual(imagediffdb._sanitize_locator(1234), '1234')
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self.assertEqual(imagediffdb._sanitize_locator('one/two'), 'one_two')
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self.assertEqual(imagediffdb._sanitize_locator('one\\two'), 'one_two')
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self.assertEqual(imagediffdb._sanitize_locator('one_two'), 'one_two')
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def test_simple(self):
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"""Test ImageDiffDB, downloading real known images from Google Storage.
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TODO(epoger): Instead of hitting Google Storage, we should read image
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files from local disk using a file:// IMG_URL_BASE.
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"""
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# params for each self-test:
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# 0. expected image locator
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# 1. expected image URL
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# 2. actual image locator
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# 3. actual image URL
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# 4. expected percent_pixels_differing (as a string, to 4 decimal places)
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# 5. expected weighted_diff_measure (as a string, to 4 decimal places)
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# 6. expected perceptual difference (as a string, to 4 decimal places)
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# 7. expected max_diff_per_channel
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selftests = [
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[
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'arcofzorro/16206093933823793653',
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IMG_URL_BASE + 'arcofzorro/16206093933823793653.png',
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'arcofzorro/13786535001616823825',
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IMG_URL_BASE + 'arcofzorro/13786535001616823825.png',
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'0.0662', '0.0113', '0.0662', [255, 255, 247],
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],
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[
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'gradients_degenerate_2pt/10552995703607727960',
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IMG_URL_BASE + 'gradients_degenerate_2pt/10552995703607727960.png',
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'gradients_degenerate_2pt/11198253335583713230',
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IMG_URL_BASE + 'gradients_degenerate_2pt/11198253335583713230.png',
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'100.0000', '66.6667', '100.0000', [255, 0, 255],
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],
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]
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# Add all image pairs to the database
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db = imagediffdb.ImageDiffDB(self._temp_dir)
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for selftest in selftests:
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retval = db.add_image_pair(
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expected_image_locator=selftest[0], expected_image_url=selftest[1],
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actual_image_locator=selftest[2], actual_image_url=selftest[3])
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# Fetch each image pair from the database
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for selftest in selftests:
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record = db.get_diff_record(expected_image_locator=selftest[0],
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actual_image_locator=selftest[2])
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self.assertEqual('%.4f' % record.get_percent_pixels_differing(),
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selftest[4])
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self.assertEqual('%.4f' % record.get_weighted_diff_measure(), selftest[5])
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self.assertEqual('%.4f' % record.get_perceptual_difference(), selftest[6])
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self.assertEqual(record.get_max_diff_per_channel(), selftest[7])
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def main():
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suite = unittest.TestLoader().loadTestsFromTestCase(ImageDiffDbTest)
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unittest.TextTestRunner(verbosity=2).run(suite)
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if __name__ == '__main__':
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main()
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