def test_relative_urls(self):
"""URLs relative to the CSS file are correctly identified and encoded"""
expected_output = self.read_fixture_file("relative_urls.expected.css")
new_css = make_css_images_inline(
self.get_fixture_file_path("relative_urls.css"),
)
eq_(expected_output, new_css)
def test_whitespace(self):
"""
All styles of whitespace around the URL being defined are allowed as per
http://www.w3.org/TR/CSS2/syndata.html#uri
"""
expected_output = self.read_fixture_file("whitespace.expected.css")
new_css = make_css_images_inline(
self.get_fixture_file_path("whitespace.css"),
"/whitespace.css",
)
def test_skipped_urls(self):
"""
URLs which point to http:// locations or cannot be found on disk are
left unchanged.
"""
expected_output = self.read_fixture_file("skip.css")
new_css = make_css_images_inline(
self.get_fixture_file_path("skip.css"),
"/skip.css",
)
eq_(expected_output, new_css)
def test_size_limit_met(self):
"""
When the size of a file exactly matches the limit or is under the limit,
it is still encoded.
"""
expected_output = self.read_fixture_file("relative_urls.expected.css")
# Exact hit on size of blue.jpg
new_css = make_css_images_inline(
self.get_fixture_file_path("relative_urls.css"),
"/relative_urls.css", image_size_limit=16965
)
eq_(expected_output, new_css)
# Easily clear of blue.jpg size
new_css = make_css_images_inline(
self.get_fixture_file_path("relative_urls.css"),
"/relative_urls.css", image_size_limit=20000
)
eq_(expected_output, new_css)
def test_quotes(self):
"""
All styles of quoting are permitted as defined by
http://www.w3.org/TR/CSS2/syndata.html#uri
"""
expected_output = self.read_fixture_file("quotes.expected.css")
new_css = make_css_images_inline(
self.get_fixture_file_path("quotes.css"),
"/quotes.css",
)
eq_(expected_output, new_css)
def test_size_limit_not_met(self):
"""
When the size of a file exceeds the maximum file size that file is left
alone in the output.
"""
expected_output = self.read_fixture_file(
"image_size_not_met.expected.css")
new_css = make_css_images_inline(
self.get_fixture_file_path("relative_urls.css"),
"/relative_urls.css", image_size_limit=3000
)
eq_(expected_output, new_css)
def main():
parser = OptionParser(usage="%prog [options] <input CSS file> <absolute URL of CSS file> " "<ouptut file>")
parser.add_option(
"-m",
"--max-image-size",
type="int",
dest="max_image_size",
help="The size (in bytes) which images must be under to be encoded",
)
options, arguments = parser.parse_args()
if len(arguments) != 3:
print "%s takes exactly three arguments!\n" % parser.get_prog_name()
print parser.get_usage()
sys.exit(1)
css_file_path = path.abspath(path.expanduser(arguments[0]))
css_file_url = arguments[1]
output_file_name = path.abspath(path.expanduser(arguments[2]))
if not path.exists(css_file_path):
print "'%s' cannot be found - aborting conversion" % css_file_path
sys.exit(2)
output_dir = path.dirname(output_file_name)
if not path.exists(output_dir):
print "The directory to contain the output file '%s' does not exist " "- aborting conversion" % output_dir
sys.exit(2)
print "Converting '%s'" % css_file_path
try:
converted_css = make_css_images_inline(css_file_path, css_file_url, options.max_image_size)
except CssFileError, exc:
print str(exc)
sys.exit(3)
