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# upscale-qt - tests for the non-GUI helpers and a GUI smoke test
# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import os
import tempfile
from importlib.machinery import SourceFileLoader
from importlib.util import module_from_spec, spec_from_loader
TMP = tempfile.mkdtemp(prefix='upscale-qt-test-')
os.environ['QT_QPA_PLATFORM'] = 'offscreen'
os.environ['XDG_CONFIG_HOME'] = os.path.join(TMP, 'config')
HERE = os.path.dirname(os.path.abspath(__file__))
_loader = SourceFileLoader('upscale_qt', os.path.join(HERE, 'upscale-qt'))
uq = module_from_spec(spec_from_loader('upscale_qt', _loader))
_loader.exec_module(uq)
from PyQt6.QtGui import QColor, QImage, QImageReader # noqa: E402
NAMES = ['4x_detail.pth', 'RealESRGAN_x4plus.pth',
'RealESRGAN_x4plus_anime_6B.pth']
def test_match_model():
m = uq.match_model
# the longer stem must win over its own prefix
assert m('RealESRGAN_x4plus_anime_6B.pth', NAMES) == 'RealESRGAN_x4plus_anime_6B.pth'
assert m(' realesrgan_x4plus\n', NAMES) == 'RealESRGAN_x4plus.pth'
assert m('I suggest 4x_detail.', NAMES) == '4x_detail.pth'
assert m('no idea', NAMES) is None
assert m('', []) is None
def test_list_models():
d = os.path.join(TMP, 'models')
os.makedirs(d)
for f in ('b.safetensors', 'a.pth', 'notes.txt', 'c.GGUF'):
open(os.path.join(d, f), 'w').close()
assert uq.list_models(d) == ['a.pth', 'b.safetensors', 'c.GGUF']
assert uq.list_models(os.path.join(TMP, 'missing')) == []
def test_args():
a = uq.sd_args('/m/x.pth', '/in.png', '/out.png')
assert a == ['-M', 'upscale', '--upscale-model', '/m/x.pth',
'-i', '/in.png', '-o', '/out.png']
a = uq.llama_args('/m.gguf', '/mm.gguf', '/in.png', NAMES)
assert a[a.index('--image') + 1] == '/in.png'
prompt = a[a.index('-p') + 1]
assert all(n in prompt for n in NAMES)
assert 'noise' in prompt
def test_save_over():
path = os.path.join(TMP, 'photo.JPG') # uppercase suffix on purpose
small = QImage(4, 4, QImage.Format.Format_RGB32)
small.fill(QColor('red'))
assert small.save(path, 'jpeg')
big = QImage(16, 16, QImage.Format.Format_RGB32)
big.fill(QColor('blue'))
assert uq.save_over(big, path)
assert QImage(path).width() == 16
assert bytes(QImageReader.imageFormat(path)) == b'jpeg'
assert not os.path.exists(path + '.part')
if __name__ == '__main__':
for name, fn in list(globals().items()):
if name.startswith('test_'):
fn()
print('ok', name)
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