214a024e8c
- fix differing pixels count (we weren't always doing this right) - report number of differing pixels, as well as percentage - report worst difference per RGB channel - apply alpha mask to difference image (changed pixels = opaque, unchanged = transparent) - add tooltips with further explanation of pixel diffs (SkipBuildbotRuns) R=mtklein@google.com Review URL: https://codereview.chromium.org/82823005 git-svn-id: http://skia.googlecode.com/svn/trunk@12366 2bbb7eff-a529-9590-31e7-b0007b416f81
70 lines
2.1 KiB
Python
Executable File
70 lines
2.1 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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TODO(epoger): Modify to use Python's unittest framework.
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"""
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# System-level imports
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import logging
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# Local imports
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import imagediffdb
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IMAGE_URL_BASE = 'http://chromium-skia-gm.commondatastorage.googleapis.com/gm/bitmap-64bitMD5/'
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def main():
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logging.basicConfig(level=logging.INFO)
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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 max_diff_per_channel
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selftests = [
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[
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'16206093933823793653',
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IMAGE_URL_BASE + 'arcofzorro/16206093933823793653.png',
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'13786535001616823825',
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IMAGE_URL_BASE + 'arcofzorro/13786535001616823825.png',
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'0.0662', '0.0113', [255, 255, 247],
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],
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[
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'10552995703607727960',
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IMAGE_URL_BASE + 'gradients_degenerate_2pt/10552995703607727960.png',
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'11198253335583713230',
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IMAGE_URL_BASE + 'gradients_degenerate_2pt/11198253335583713230.png',
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'100.0000', '66.6667', [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('/tmp/ImageDiffDB')
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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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assert (('%.4f' % record.get_percent_pixels_differing()) == selftest[4])
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assert (('%.4f' % record.get_weighted_diff_measure()) == selftest[5])
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assert (record.get_max_diff_per_channel() == selftest[6])
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logging.info("Self-test completed successfully!")
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if __name__ == '__main__':
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main()
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