harfbuzz/test/subset/run-tests.py

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#!/usr/bin/env python3
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# Runs a subsetting test suite. Compares the results of subsetting via harfbuzz
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# to subsetting via fonttools.
from difflib import unified_diff
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import os
import re
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import subprocess
import sys
import tempfile
import shutil
import io
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from subset_test_suite import SubsetTestSuite
try:
from fontTools.ttLib import TTFont
except ImportError:
TTFont = None
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ots_sanitize = shutil.which ("ots-sanitize")
def subset_cmd (command):
global hb_subset, process
print (hb_subset + ' ' + " ".join(command))
process.stdin.write ((';'.join (command) + '\n').encode ("utf-8"))
process.stdin.flush ()
return process.stdout.readline().decode ("utf-8").strip ()
def cmd (command):
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p = subprocess.Popen (
command, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
universal_newlines=True)
(stdoutdata, stderrdata) = p.communicate ()
print (stderrdata, end="", file=sys.stderr)
return stdoutdata, p.returncode
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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 ())
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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
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def run_test (test, should_check_ots, preprocess):
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out_file = os.path.join (tempfile.mkdtemp (), test.get_font_name () + '-subset' + test.get_font_extension ())
cli_args = ["--font-file=" + test.font_path,
"--output-file=" + out_file,
"--unicodes=%s" % test.unicodes (),
"--drop-tables+=DSIG",
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"--drop-tables-=sbix"]
if preprocess:
cli_args.extend(["--preprocess-face",])
cli_args.extend (test.get_profile_flags ())
if test.get_instance_flags ():
cli_args.extend (["--instance=%s" % ','.join(test.get_instance_flags ())])
ret = subset_cmd (cli_args)
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if ret != "success":
return fail_test (test, cli_args, "%s failed" % ' '.join (cli_args))
expected_file = os.path.join (test_suite.get_output_directory (), test.get_font_name ())
with open (expected_file, "rb") as fp:
expected_contents = fp.read()
with open (out_file, "rb") as fp:
actual_contents = fp.read()
if expected_contents == actual_contents:
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
if TTFont is None:
print ("fonttools is not present, skipping TTX diff.")
return fail_test (test, cli_args, "hash for expected and actual does not match.")
with io.StringIO () as fp:
try:
with TTFont (expected_file) as font:
font.saveXML (fp)
except Exception as e:
print (e)
return fail_test (test, cli_args, "ttx failed to parse the expected result")
expected_ttx = fp.getvalue ()
with io.StringIO () as fp:
try:
with TTFont (out_file) as font:
font.saveXML (fp)
except Exception as e:
print (e)
return fail_test (test, cli_args, "ttx failed to parse the actual result")
actual_ttx = fp.getvalue ()
if actual_ttx != expected_ttx:
for line in unified_diff (expected_ttx.splitlines (1), actual_ttx.splitlines (1)):
sys.stdout.write (line)
sys.stdout.flush ()
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return fail_test (test, cli_args, 'ttx for expected and actual does not match.')
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return fail_test (test, cli_args, 'hash for expected and actual does not match, '
'but the ttx matches. Expected file needs to be updated?')
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def has_ots ():
if not ots_sanitize:
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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
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args = sys.argv[1:]
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if not args or sys.argv[1].find ('hb-subset') == -1 or not os.path.exists (sys.argv[1]):
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sys.exit ("First argument does not seem to point to usable hb-subset.")
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hb_subset, args = args[0], args[1:]
if not len (args):
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sys.exit ("No tests supplied.")
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has_ots = has_ots()
process = subprocess.Popen ([hb_subset, '--batch'],
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=sys.stdout)
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fails = 0
for path in args:
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with open (path, mode="r", encoding="utf-8") as f:
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print ("Running tests in " + path)
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test_suite = SubsetTestSuite (path, f.read ())
for test in test_suite.tests ():
# Tests are run with and without preprocessing, results should be the
# same between them.
fails += run_test (test, has_ots, False)
fails += run_test (test, has_ots, True)
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if fails != 0:
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sys.exit ("%d test(s) failed." % fails)
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else:
print ("All tests passed.")