def test_write_svg_to_png(filename):
# If you want to regenerate these, e.g. the svg template has significantly
# changed, easiest way is to patch write_svg_to_png to not delete the
# temporary file (delete:False in temp_args) and copy the svg out of /tmp.
# Output png files are in user-media/version-previews/full and /thumbs.
out = tempfile.mktemp()
svg_xml = os.path.join(
settings.ROOT,
'src/olympia/versions/tests/static_themes/%s.svg' % filename)
svg_png = os.path.join(
settings.ROOT,
'src/olympia/versions/tests/static_themes/%s.png' % filename)
with storage.open(svg_xml, 'rb') as svgfile:
svg = svgfile.read()
write_svg_to_png(svg, out)
assert storage.exists(out)
# compare the image content. rms should be 0 but travis renders it
# different... 3 is the magic difference.
svg_png_img = Image.open(svg_png)
svg_out_img = Image.open(out)
image_diff = ImageChops.difference(svg_png_img, svg_out_img)
sum_of_squares = sum(
value * ((idx % 256) ** 2)
for idx, value in enumerate(image_diff.histogram()))
rms = math.sqrt(
sum_of_squares / float(svg_png_img.size[0] * svg_png_img.size[1]))
assert rms < 3
def test_write_svg_to_png(filename):
# If you want to regenerate these, e.g. the svg template has significantly
# changed, you can grab the svg file from shared_storage/tmp - when
# settings.DEBUG==True it's not deleted afterwards.
# Output png files are in shared_storage/uploads/version-previews/full
# and /thumbs.
svg_xml = os.path.join(
settings.ROOT,
'src/olympia/versions/tests/static_themes/%s.svg' % filename)
svg_png = os.path.join(
settings.ROOT,
'src/olympia/versions/tests/static_themes/%s.png' % filename)
with storage.open(svg_xml, 'rb') as svgfile:
svg = svgfile.read()
try:
out_dir = tempfile.mkdtemp()
out = os.path.join(out_dir, 'a', 'b.png')
write_svg_to_png(svg, out)
assert storage.exists(out)
# compare the image content. rms should be 0 but travis renders it
# different... 3 is the magic difference.
svg_png_img = Image.open(svg_png)
svg_out_img = Image.open(out)
image_diff = ImageChops.difference(svg_png_img, svg_out_img)
except Exception as e:
raise e
finally:
shutil.rmtree(out_dir)
sum_of_squares = sum(value * ((idx % 256)**2)
for idx, value in enumerate(image_diff.histogram()))
rms = math.sqrt(sum_of_squares /
float(svg_png_img.size[0] * svg_png_img.size[1]))
assert rms < 3
def test_write_svg_to_png(filename):
# If you want to regenerate these, e.g. the svg template has significantly
# changed, easiest way is to patch write_svg_to_png to not delete the
# temporary file (delete:False in temp_args) and copy the svg out of /tmp.
# Output png files are in user-media/version-previews/full and /thumbs.
out = tempfile.mktemp()
svg_xml = os.path.join(
settings.ROOT,
'src/olympia/versions/tests/static_themes/%s.svg' % filename)
svg_png = os.path.join(
settings.ROOT,
'src/olympia/versions/tests/static_themes/%s.png' % filename)
with storage.open(svg_xml, 'rb') as svgfile:
svg = svgfile.read()
write_svg_to_png(svg, out)
assert storage.exists(out)
# compare the image content. rms should be 0 but travis renders it
# different... 3 is the magic difference.
svg_png_img = Image.open(svg_png)
svg_out_img = Image.open(out)
image_diff = ImageChops.difference(svg_png_img, svg_out_img)
sum_of_squares = sum(value * ((idx % 256)**2)
for idx, value in enumerate(image_diff.histogram()))
rms = math.sqrt(sum_of_squares /
float(svg_png_img.size[0] * svg_png_img.size[1]))
assert rms < 3
def test_write_svg_to_png(filename):
# If you want to regenerate these, e.g. the svg template has significantly
# changed, you can grab the svg file from shared_storage/tmp - when
# settings.DEBUG==True it's not deleted afterwards.
# Output png files are in shared_storage/uploads/version-previews/full
# and /thumbs.
svg_xml = os.path.join(
settings.ROOT,
'src/olympia/versions/tests/static_themes/%s.svg' % filename)
svg_png = os.path.join(
settings.ROOT,
'src/olympia/versions/tests/static_themes/%s.png' % filename)
with storage.open(svg_xml, 'rb') as svgfile:
svg = svgfile.read()
try:
out_dir = tempfile.mkdtemp()
out = os.path.join(out_dir, 'a', 'b.png')
write_svg_to_png(svg, out)
assert storage.exists(out)
# compare the image content. rms should be 0 but travis renders it
# different... 3 is the magic difference.
svg_png_img = Image.open(svg_png)
svg_out_img = Image.open(out)
image_diff = ImageChops.difference(svg_png_img, svg_out_img)
except Exception as e:
raise e
finally:
shutil.rmtree(out_dir)
sum_of_squares = sum(
value * ((idx % 256) ** 2)
for idx, value in enumerate(image_diff.histogram()))
rms = math.sqrt(
sum_of_squares / float(svg_png_img.size[0] * svg_png_img.size[1]))
assert rms < 3
def test_write_svg_to_png():
out = tempfile.mktemp()
svg_xml = os.path.join(
settings.ROOT,
'src/olympia/versions/tests/static_themes/weta_theme.svg')
svg_png = os.path.join(
settings.ROOT,
'src/olympia/versions/tests/static_themes/weta_theme.png')
with storage.open(svg_xml, 'rb') as svgfile:
svg = svgfile.read()
write_svg_to_png(svg, out)
assert storage.exists(out)
# compare the image content. rms should be 0 but travis renders it
# different... 19 is the magic difference.
svg_png_img = Image.open(svg_png)
svg_out_img = Image.open(out)
image_diff = ImageChops.difference(svg_png_img, svg_out_img)
sum_of_squares = sum(
value * ((idx % 256) ** 2)
for idx, value in enumerate(image_diff.histogram()))
rms = math.sqrt(
sum_of_squares / float(svg_png_img.size[0] * svg_png_img.size[1]))
assert rms < 19
