#!/usr/bin/env python
# Runs a subsetting test suite. Compares the results of subsetting via harfbuzz
# to subsetting via fonttools.
from __future__ import print_function, division, absolute_import
import io
from difflib import unified_diff
import os
import re
import subprocess
import sys
import tempfile
from subset_test_suite import SubsetTestSuite
# https://stackoverflow.com/a/377028
def which (program):
def is_exe (fpath):
return os.path.isfile (fpath) and os.access (fpath, os.X_OK)
fpath, _ = os.path.split (program)
if fpath:
if is_exe (program):
return program
else:
for path in os.environ["PATH"].split (os.pathsep):
exe_file = os.path.join (path, program)
if is_exe (exe_file):
return exe_file
return None
fonttools = which ("fonttools")
ots_sanitize = which ("ots-sanitize")
if not fonttools:
print ("fonttools is not present, skipping test.")
sys.exit (77)
def cmd(command):
p = subprocess.Popen (
command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(stdoutdata, stderrdata) = p.communicate ()
print (stderrdata, end="") # file=sys.stderr
return stdoutdata, p.returncode
def read_binary (file_path):
with open (file_path, 'rb') as f:
return f.read ()
def fail_test (test, cli_args, message):
print ('ERROR: %s' % message)
print ('Test State:')
print (' test.font_path %s' % os.path.abspath (test.font_path))
print (' test.profile_path %s' % os.path.abspath (test.profile_path))
print (' test.unicodes %s' % test.unicodes ())
expected_file = os.path.join(test_suite.get_output_directory (),
test.get_font_name ())
print (' expected_file %s' % os.path.abspath (expected_file))
return 1
def run_test (test, should_check_ots):
out_file = os.path.join (tempfile.mkdtemp (), test.get_font_name () + '-subset' + test.get_font_extension ())
cli_args = [hb_subset,
"--font-file=" + test.font_path,
"--output-file=" + out_file,
"--unicodes=%s" % test.unicodes (),
"--drop-tables+=DSIG,GPOS,GSUB,GDEF,gvar,avar,MVAR,HVAR"]
cli_args.extend (test.get_profile_flags ())
print (' '.join (cli_args))
_, return_code = cmd (cli_args)
if return_code:
return fail_test (test, cli_args, "%s returned %d" % (' '.join (cli_args), return_code))
expected_ttx, return_code = run_ttx (os.path.join (test_suite.get_output_directory (),
test.get_font_name ()))
if return_code:
return fail_test (test, cli_args, "ttx (expected) returned %d" % (return_code))
actual_ttx, return_code = run_ttx (out_file)
if return_code:
return fail_test (test, cli_args, "ttx (actual) returned %d" % (return_code))
print ("stripping checksums.")
expected_ttx = strip_check_sum (expected_ttx)
actual_ttx = strip_check_sum (actual_ttx)
if not actual_ttx == expected_ttx:
for line in unified_diff (expected_ttx.splitlines (1), actual_ttx.splitlines (1)):
sys.stdout.write (line)
sys.stdout.flush ()
return fail_test (test, cli_args, 'ttx for expected and actual does not match.')
if should_check_ots:
print ("Checking output with ots-sanitize.")
if not check_ots (out_file):
return fail_test (test, cli_args, 'ots for subsetted file fails.')
return 0
def run_ttx (file):
print ("fonttools ttx %s" % file)
return cmd ([fonttools, "ttx", "-q", "-o-", file])
def strip_check_sum (ttx_string):
return re.sub ('checkSumAdjustment value=["]0x([0-9a-fA-F])+["]',
'checkSumAdjustment value="0x00000000"',
ttx_string.decode ("utf-8"), count=1)
def has_ots ():
if not ots_sanitize:
print("OTS is not present, skipping all ots checks.")
return False
return True
def check_ots (path):
ots_report, returncode = cmd ([ots_sanitize, path])
if returncode:
print("OTS Failure: %s" % ots_report);
return False
return True
args = sys.argv[1:]
if not args or sys.argv[1].find ('hb-subset') == -1 or not os.path.exists (sys.argv[1]):
print ("First argument does not seem to point to usable hb-subset.")
sys.exit (1)
hb_subset, args = args[0], args[1:]
if not len (args):
print ("No tests supplied.")
sys.exit (1)
has_ots = has_ots()
fails = 0
for path in args:
with io.open (path, mode="r", encoding="utf-8") as f:
print ("Running tests in " + path)
test_suite = SubsetTestSuite (path, f.read ())
for test in test_suite.tests ():
fails += run_test (test, has_ots)
if fails != 0:
print (str (fails) + " test(s) failed.")
sys.exit(1)
else:
print ("All tests passed.")
