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80 lines
2.8 KiB
Python
80 lines
2.8 KiB
Python
# SPDX-License-Identifier: MIT
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"""Regression tests for #550 (BusyDialog auto-close from a worker thread) and
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#553 (word-wrap labels in a resizable scroll area must have a constant wrap
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width so QBoxLayout::heightForWidth can't recurse to a SIGSEGV).
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Runs headless via the offscreen Qt platform — no display server required.
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"""
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from __future__ import annotations
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import os
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import threading
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import time
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import pytest
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# Must be set before the QApplication ctor.
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os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
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pytest.importorskip("PySide6")
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def _qapp():
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from PySide6.QtWidgets import QApplication
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return QApplication.instance() or QApplication([])
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def test_busydialog_finish_from_worker_thread_closes_the_dialog():
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# #550: a bare worker thread has no Qt event loop, so the old
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# `QTimer.singleShot(0, dlg.finish)` never fired and the dialog hung open.
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# finish() is now signal-based, so a cross-thread call queues accept() onto
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# the GUI thread's exec() loop. The watchdog reject bounds the test so a
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# regression fails fast instead of hanging CI.
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from PySide6.QtCore import QTimer
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from PySide6.QtWidgets import QDialog
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from winpodx.gui._widget_helpers import BusyDialog
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_qapp()
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dlg = BusyDialog(None, "Working", "Doing a thing...")
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def worker():
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time.sleep(0.05) # let exec()'s loop start first (the realistic case)
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dlg.finish() # cross-thread close
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threading.Thread(target=worker, daemon=True).start()
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QTimer.singleShot(3000, dlg.reject) # watchdog: a hang would reject, not hang
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result = dlg.exec()
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assert result == QDialog.DialogCode.Accepted # closed via finish(), not the watchdog
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def test_busydialog_finish_is_signal_based():
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from winpodx.gui._widget_helpers import BusyDialog
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_qapp()
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dlg = BusyDialog(None, "T", "m")
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# The cross-thread-safe close path: a signal connected to accept().
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assert hasattr(dlg, "_close_requested")
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def test_empty_panel_wrapped_labels_have_constant_width():
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# #553: word-wrap QLabels inside the resizable app-list scroll area must be
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# fixed-width, else their height tracks the viewport width and feeds back
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# into QBoxLayout::heightForWidth -> unbounded recursion -> SIGSEGV on 6.11.
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from PySide6.QtWidgets import QLabel
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from winpodx.gui._widget_helpers import make_empty_panel
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_qapp()
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panel = make_empty_panel("A title that is reasonably long", "Some body text here too")
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wrapped = [lbl for lbl in panel.findChildren(QLabel) if lbl.wordWrap()]
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assert wrapped, "empty panel should have word-wrap labels"
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for lbl in wrapped:
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# setFixedWidth makes min == max == the constant wrap width.
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assert lbl.minimumWidth() == lbl.maximumWidth() > 0, (
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"word-wrap label in a resizable scroll area must have a fixed width"
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)
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