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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 compare_rendered_pictures.py
TODO(epoger): Create a command to update the expected results (in
self._output_dir_expected) when appropriate. For now, you should:
1. examine the results in self._output_dir_actual and make sure they are ok
2. rm -rf self._output_dir_expected
3. mv self._output_dir_actual self._output_dir_expected
Although, if you're using an SVN checkout, this will blow away .svn directories
within self._output_dir_expected, which wouldn't be good...
"""
import os
import subprocess
import sys
# Imports from within Skia
import base_unittest
import compare_rendered_pictures
import results
import gm_json # must import results first, so that gm_json will be in sys.path
class CompareRenderedPicturesTest(base_unittest.TestCase):
def test_endToEnd(self):
"""Generate two sets of SKPs, run render_pictures over both, and compare
the results."""
self._generate_skps_and_run_render_pictures(
subdir='before_patch', skpdict={
'changed.skp': 200,
'unchanged.skp': 100,
'only-in-before.skp': 128,
})
self._generate_skps_and_run_render_pictures(
subdir='after_patch', skpdict={
'changed.skp': 201,
'unchanged.skp': 100,
'only-in-after.skp': 128,
})
results_obj = compare_rendered_pictures.RenderedPicturesComparisons(
actuals_root=self._temp_dir,
subdirs=('before_patch', 'after_patch'),
generated_images_root=self._temp_dir,
diff_base_url='/static/generated-images')
results_obj.get_timestamp = mock_get_timestamp
gm_json.WriteToFile(
results_obj.get_packaged_results_of_type(
results.KEY__HEADER__RESULTS_ALL),
os.path.join(self._output_dir_actual, 'compare_rendered_pictures.json'))
def _generate_skps_and_run_render_pictures(self, subdir, skpdict):
"""Generate SKPs and run render_pictures on them.
Args:
subdir: subdirectory (within self._temp_dir) to write all files into
skpdict: {skpname: redvalue} dictionary describing the SKP files to render
"""
out_path = os.path.join(self._temp_dir, subdir)
os.makedirs(out_path)
for skpname, redvalue in skpdict.iteritems():
self._run_skpmaker(
output_path=os.path.join(out_path, skpname), red=redvalue)
# TODO(epoger): Add --mode tile 256 256 --writeWholeImage to the unittest,
# and fix its result! (imageURLs within whole-image entries are wrong when
# I tried adding that)
binary = self.find_path_to_program('render_pictures')
return subprocess.check_output([
binary,
'--clone', '1',
'--config', '8888',
'-r', out_path,
'--writeChecksumBasedFilenames',
'--writeJsonSummaryPath', os.path.join(out_path, 'summary.json'),
'--writePath', out_path])
def _run_skpmaker(self, output_path, red=0, green=0, blue=0,
width=640, height=400):
"""Runs the skpmaker binary to generate SKP with known characteristics.
Args:
output_path: Filepath to write the SKP into.
red: Value of red color channel in image, 0-255.
green: Value of green color channel in image, 0-255.
blue: Value of blue color channel in image, 0-255.
width: Width of canvas to create.
height: Height of canvas to create.
"""
binary = self.find_path_to_program('skpmaker')
return subprocess.check_output([
binary,
'--red', str(red),
'--green', str(green),
'--blue', str(blue),
'--width', str(width),
'--height', str(height),
'--writePath', str(output_path)])
def mock_get_timestamp():
"""Mock version of BaseComparisons.get_timestamp() for testing."""
return 12345678
def main():
base_unittest.main(CompareRenderedPicturesTest)
if __name__ == '__main__':
main()
|
