Add model matching, argument and overwrite helpers

match_model tries the longest stem first so an answer naming the anime
variant is not taken for its shorter prefix. save_over writes a .part file
in the original's format and renames it into place.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/test_upscale_qt.py b/test_upscale_qt.py
new file mode 100644
index 0000000..526dc37
--- /dev/null
+++ b/test_upscale_qt.py
@@ -0,0 +1,84 @@
+# 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)