mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-09-21 19:38:57 +03:00
306 lines
8.3 KiB
Python
306 lines
8.3 KiB
Python
"""
|
|
Helper functions.
|
|
"""
|
|
from __future__ import print_function
|
|
import sys
|
|
|
|
if sys.version_info[:2] <= (2, 6):
|
|
import unittest2 as unittest
|
|
else:
|
|
import unittest
|
|
|
|
|
|
class PillowTestCase(unittest.TestCase):
|
|
|
|
def assert_image(self, im, mode, size, msg=None):
|
|
if mode is not None:
|
|
self.assertEqual(
|
|
im.mode, mode,
|
|
msg or "got mode %r, expected %r" % (im.mode, mode))
|
|
|
|
if size is not None:
|
|
self.assertEqual(
|
|
im.size, size,
|
|
msg or "got size %r, expected %r" % (im.size, size))
|
|
|
|
def assert_image_equal(self, a, b, msg=None):
|
|
self.assertEqual(
|
|
a.mode, b.mode,
|
|
msg or "got mode %r, expected %r" % (a.mode, b.mode))
|
|
self.assertEqual(
|
|
a.size, b.size,
|
|
msg or "got size %r, expected %r" % (a.size, b.size))
|
|
self.assertEqual(
|
|
a.tobytes(), b.tobytes(),
|
|
msg or "got different content")
|
|
|
|
def assert_warning(self, warn_class, func):
|
|
import warnings
|
|
|
|
with warnings.catch_warnings(record=True) as w:
|
|
# Cause all warnings to always be triggered.
|
|
warnings.simplefilter("always")
|
|
|
|
# Hopefully trigger a warning.
|
|
func()
|
|
|
|
# Verify some things.
|
|
self.assertEqual(len(w), 1)
|
|
assert issubclass(w[-1].category, warn_class)
|
|
self.assertIn("deprecated", str(w[-1].message))
|
|
|
|
|
|
# # require that deprecation warnings are triggered
|
|
# import warnings
|
|
# warnings.simplefilter('default')
|
|
# # temporarily turn off resource warnings that warn about unclosed
|
|
# # files in the test scripts.
|
|
# try:
|
|
# warnings.filterwarnings("ignore", category=ResourceWarning)
|
|
# except NameError:
|
|
# # we expect a NameError on py2.x, since it doesn't have ResourceWarnings.
|
|
# pass
|
|
|
|
import sys
|
|
py3 = (sys.version_info >= (3, 0))
|
|
|
|
# # some test helpers
|
|
#
|
|
# _target = None
|
|
# _tempfiles = []
|
|
# _logfile = None
|
|
#
|
|
#
|
|
# def success():
|
|
# import sys
|
|
# success.count += 1
|
|
# if _logfile:
|
|
# print(sys.argv[0], success.count, failure.count, file=_logfile)
|
|
# return True
|
|
#
|
|
#
|
|
# def failure(msg=None, frame=None):
|
|
# import sys
|
|
# import linecache
|
|
# failure.count += 1
|
|
# if _target:
|
|
# if frame is None:
|
|
# frame = sys._getframe()
|
|
# while frame.f_globals.get("__name__") != _target.__name__:
|
|
# frame = frame.f_back
|
|
# location = (frame.f_code.co_filename, frame.f_lineno)
|
|
# prefix = "%s:%d: " % location
|
|
# line = linecache.getline(*location)
|
|
# print(prefix + line.strip() + " failed:")
|
|
# if msg:
|
|
# print("- " + msg)
|
|
# if _logfile:
|
|
# print(sys.argv[0], success.count, failure.count, file=_logfile)
|
|
# return False
|
|
#
|
|
# success.count = failure.count = 0
|
|
#
|
|
#
|
|
# # predicates
|
|
#
|
|
# def assert_almost_equal(a, b, msg=None, eps=1e-6):
|
|
# if abs(a-b) < eps:
|
|
# success()
|
|
# else:
|
|
# failure(msg or "got %r, expected %r" % (a, b))
|
|
#
|
|
#
|
|
# def assert_deep_equal(a, b, msg=None):
|
|
# try:
|
|
# if len(a) == len(b):
|
|
# if all([x == y for x, y in zip(a, b)]):
|
|
# success()
|
|
# else:
|
|
# failure(msg or "got %s, expected %s" % (a, b))
|
|
# else:
|
|
# failure(msg or "got length %s, expected %s" % (len(a), len(b)))
|
|
# except:
|
|
# assert_equal(a, b, msg)
|
|
#
|
|
#
|
|
# def assert_match(v, pattern, msg=None):
|
|
# import re
|
|
# if re.match(pattern, v):
|
|
# success()
|
|
# else:
|
|
# failure(msg or "got %r, doesn't match pattern %r" % (v, pattern))
|
|
#
|
|
#
|
|
# # helpers
|
|
#
|
|
# from io import BytesIO
|
|
#
|
|
#
|
|
# def fromstring(data):
|
|
# from PIL import Image
|
|
# return Image.open(BytesIO(data))
|
|
#
|
|
#
|
|
# def tostring(im, format, **options):
|
|
# out = BytesIO()
|
|
# im.save(out, format, **options)
|
|
# return out.getvalue()
|
|
|
|
|
|
def lena(mode="RGB", cache={}):
|
|
from PIL import Image
|
|
im = cache.get(mode)
|
|
if im is None:
|
|
if mode == "RGB":
|
|
im = Image.open("Images/lena.ppm")
|
|
elif mode == "F":
|
|
im = lena("L").convert(mode)
|
|
elif mode[:4] == "I;16":
|
|
im = lena("I").convert(mode)
|
|
else:
|
|
im = lena("RGB").convert(mode)
|
|
cache[mode] = im
|
|
return im
|
|
|
|
|
|
# def assert_image_completely_equal(a, b, msg=None):
|
|
# if a != b:
|
|
# failure(msg or "images different")
|
|
# else:
|
|
# success()
|
|
#
|
|
#
|
|
# def assert_image_similar(a, b, epsilon, msg=None):
|
|
# epsilon = float(epsilon)
|
|
# if a.mode != b.mode:
|
|
# return failure(msg or "got mode %r, expected %r" % (a.mode, b.mode))
|
|
# elif a.size != b.size:
|
|
# return failure(msg or "got size %r, expected %r" % (a.size, b.size))
|
|
# diff = 0
|
|
# try:
|
|
# ord(b'0')
|
|
# for abyte, bbyte in zip(a.tobytes(), b.tobytes()):
|
|
# diff += abs(ord(abyte)-ord(bbyte))
|
|
# except:
|
|
# for abyte, bbyte in zip(a.tobytes(), b.tobytes()):
|
|
# diff += abs(abyte-bbyte)
|
|
# ave_diff = float(diff)/(a.size[0]*a.size[1])
|
|
# if epsilon < ave_diff:
|
|
# return failure(
|
|
# msg or "average pixel value difference %.4f > epsilon %.4f" % (
|
|
# ave_diff, epsilon))
|
|
# else:
|
|
# return success()
|
|
#
|
|
#
|
|
# def tempfile(template, *extra):
|
|
# import os
|
|
# import os.path
|
|
# import sys
|
|
# import tempfile
|
|
# files = []
|
|
# root = os.path.join(tempfile.gettempdir(), 'pillow-tests')
|
|
# try:
|
|
# os.mkdir(root)
|
|
# except OSError:
|
|
# pass
|
|
# for temp in (template,) + extra:
|
|
# assert temp[:5] in ("temp.", "temp_")
|
|
# name = os.path.basename(sys.argv[0])
|
|
# name = temp[:4] + os.path.splitext(name)[0][4:]
|
|
# name = name + "_%d" % len(_tempfiles) + temp[4:]
|
|
# name = os.path.join(root, name)
|
|
# files.append(name)
|
|
# _tempfiles.extend(files)
|
|
# return files[0]
|
|
#
|
|
#
|
|
# # test runner
|
|
#
|
|
# def run():
|
|
# global _target, _tests, run
|
|
# import sys
|
|
# import traceback
|
|
# _target = sys.modules["__main__"]
|
|
# run = None # no need to run twice
|
|
# tests = []
|
|
# for name, value in list(vars(_target).items()):
|
|
# if name[:5] == "test_" and type(value) is type(success):
|
|
# tests.append((value.__code__.co_firstlineno, name, value))
|
|
# tests.sort() # sort by line
|
|
# for lineno, name, func in tests:
|
|
# try:
|
|
# _tests = []
|
|
# func()
|
|
# for func, args in _tests:
|
|
# func(*args)
|
|
# except:
|
|
# t, v, tb = sys.exc_info()
|
|
# tb = tb.tb_next
|
|
# if tb:
|
|
# failure(frame=tb.tb_frame)
|
|
# traceback.print_exception(t, v, tb)
|
|
# else:
|
|
# print("%s:%d: cannot call test function: %s" % (
|
|
# sys.argv[0], lineno, v))
|
|
# failure.count += 1
|
|
#
|
|
#
|
|
# def yield_test(function, *args):
|
|
# # collect delayed/generated tests
|
|
# _tests.append((function, args))
|
|
#
|
|
#
|
|
# def skip(msg=None):
|
|
# import os
|
|
# print("skip")
|
|
# os._exit(0) # don't run exit handlers
|
|
#
|
|
#
|
|
# def ignore(pattern):
|
|
# """Tells the driver to ignore messages matching the pattern, for the
|
|
# duration of the current test."""
|
|
# print('ignore: %s' % pattern)
|
|
#
|
|
#
|
|
# def _setup():
|
|
# global _logfile
|
|
#
|
|
# import sys
|
|
# if "--coverage" in sys.argv:
|
|
# # Temporary: ignore PendingDeprecationWarning from Coverage (Py3.4)
|
|
# with warnings.catch_warnings():
|
|
# warnings.simplefilter("ignore")
|
|
# import coverage
|
|
# cov = coverage.coverage(auto_data=True, include="PIL/*")
|
|
# cov.start()
|
|
#
|
|
# def report():
|
|
# if run:
|
|
# run()
|
|
# if success.count and not failure.count:
|
|
# print("ok")
|
|
# # only clean out tempfiles if test passed
|
|
# import os
|
|
# import os.path
|
|
# import tempfile
|
|
# for file in _tempfiles:
|
|
# try:
|
|
# os.remove(file)
|
|
# except OSError:
|
|
# pass # report?
|
|
# temp_root = os.path.join(tempfile.gettempdir(), 'pillow-tests')
|
|
# try:
|
|
# os.rmdir(temp_root)
|
|
# except OSError:
|
|
# pass
|
|
#
|
|
# import atexit
|
|
# atexit.register(report)
|
|
#
|
|
# if "--log" in sys.argv:
|
|
# _logfile = open("test.log", "a")
|
|
#
|
|
#
|
|
# _setup()
|