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#!/usr/bin/python
"""
Copyright 2014 Google Inc.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
Test imagepair.py
"""
# System-level imports
import shutil
import tempfile
import unittest
# Local imports
import imagediffdb
import imagepair
IMG_URL_BASE = 'http://chromium-skia-gm.commondatastorage.googleapis.com/gm/bitmap-64bitMD5/'
class ImagePairTest(unittest.TestCase):
def setUp(self):
self._temp_dir = tempfile.mkdtemp()
self.maxDiff = None
def tearDown(self):
shutil.rmtree(self._temp_dir)
def shortDescription(self):
"""Tell unittest framework to not print docstrings for test cases."""
return None
def test_endToEnd(self):
"""Test ImagePair, using a real ImageDiffDB to download real images.
TODO(epoger): Either in addition to or instead of this end-to-end test,
we should perform some tests using either:
1. a mock ImageDiffDB, or
2. a real ImageDiffDB that doesn't hit Google Storage looking for input
image files (maybe a file:// IMG_URL_BASE)
"""
# params for each self-test:
#
# inputs:
# 0. imageA_relative_URL
# 1. imageB_relative_URL
# 2. expectations dict
# 3. extra_columns dict
# expected output:
# 4. expected result of ImagePair.as_dict()
selftests = [
[
# inputs:
'arcofzorro/16206093933823793653.png',
'arcofzorro/16206093933823793653.png',
None,
{
'builder': 'MyBuilder',
'test': 'MyTest',
},
# expected output:
{
'extraColumnValues': {
'builder': 'MyBuilder',
'test': 'MyTest',
},
'imageAUrl': 'arcofzorro/16206093933823793653.png',
'imageBUrl': 'arcofzorro/16206093933823793653.png',
'isDifferent': False,
},
],
[
# inputs:
'arcofzorro/16206093933823793653.png',
'arcofzorro/13786535001616823825.png',
None,
None,
# expected output:
{
'differenceData': {
'maxDiffPerChannel': [255, 255, 247],
'numDifferingPixels': 662,
'percentDifferingPixels': 0.0662,
'weightedDiffMeasure': 0.01127756555171088,
},
'imageAUrl': 'arcofzorro/16206093933823793653.png',
'imageBUrl': 'arcofzorro/13786535001616823825.png',
'isDifferent': True,
},
],
[
# inputs:
'gradients_degenerate_2pt/10552995703607727960.png',
'gradients_degenerate_2pt/11198253335583713230.png',
{
'ignoreFailure': True,
'bugs': [1001, 1002],
},
{
'builder': 'MyBuilder',
'test': 'MyTest',
},
# expected output:
{
'differenceData': {
'maxDiffPerChannel': [255, 0, 255],
'numDifferingPixels': 102400,
'percentDifferingPixels': 100.00,
'weightedDiffMeasure': 66.66666666666667,
},
'expectationsData': {
'bugs': [1001, 1002],
'ignoreFailure': True,
},
'extraColumnValues': {
'builder': 'MyBuilder',
'test': 'MyTest',
},
'imageAUrl':
'gradients_degenerate_2pt/10552995703607727960.png',
'imageBUrl':
'gradients_degenerate_2pt/11198253335583713230.png',
'isDifferent': True,
},
],
]
db = imagediffdb.ImageDiffDB(self._temp_dir)
for selftest in selftests:
image_pair = imagepair.ImagePair(
image_diff_db=db,
base_url=IMG_URL_BASE,
imageA_relative_url=selftest[0],
imageB_relative_url=selftest[1],
expectations=selftest[2],
extra_columns=selftest[3])
self.assertEqual(image_pair.as_dict(), selftest[4])
def main():
suite = unittest.TestLoader().loadTestsFromTestCase(ImagePairTest)
unittest.TextTestRunner(verbosity=2).run(suite)
if __name__ == '__main__':
main()
|
