skia2/gm/rebaseline_server/imagediffdb_test.py
epoger@google.com 214a024e8c rebaseline_server: improve pixel diff reporting
- 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
2013-11-22 19:26:18 +00:00

70 lines
2.1 KiB
Python
Executable File

#!/usr/bin/python
"""
Copyright 2013 Google Inc.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
Test imagediffdb.py
TODO(epoger): Modify to use Python's unittest framework.
"""
# System-level imports
import logging
# Local imports
import imagediffdb
IMAGE_URL_BASE = 'http://chromium-skia-gm.commondatastorage.googleapis.com/gm/bitmap-64bitMD5/'
def main():
logging.basicConfig(level=logging.INFO)
# params for each self-test:
# 0. expected image locator
# 1. expected image URL
# 2. actual image locator
# 3. actual image URL
# 4. expected percent_pixels_differing (as a string, to 4 decimal places)
# 5. expected weighted_diff_measure (as a string, to 4 decimal places)
# 6. expected max_diff_per_channel
selftests = [
[
'16206093933823793653',
IMAGE_URL_BASE + 'arcofzorro/16206093933823793653.png',
'13786535001616823825',
IMAGE_URL_BASE + 'arcofzorro/13786535001616823825.png',
'0.0662', '0.0113', [255, 255, 247],
],
[
'10552995703607727960',
IMAGE_URL_BASE + 'gradients_degenerate_2pt/10552995703607727960.png',
'11198253335583713230',
IMAGE_URL_BASE + 'gradients_degenerate_2pt/11198253335583713230.png',
'100.0000', '66.6667', [255, 0, 255],
],
]
# Add all image pairs to the database
db = imagediffdb.ImageDiffDB('/tmp/ImageDiffDB')
for selftest in selftests:
retval = db.add_image_pair(
expected_image_locator=selftest[0], expected_image_url=selftest[1],
actual_image_locator=selftest[2], actual_image_url=selftest[3])
# Fetch each image pair from the database
for selftest in selftests:
record = db.get_diff_record(expected_image_locator=selftest[0],
actual_image_locator=selftest[2])
assert (('%.4f' % record.get_percent_pixels_differing()) == selftest[4])
assert (('%.4f' % record.get_weighted_diff_measure()) == selftest[5])
assert (record.get_max_diff_per_channel() == selftest[6])
logging.info("Self-test completed successfully!")
if __name__ == '__main__':
main()