v0.51.1: album art sits under the list frame's closing line, like the empty panel

tests/test_round82.py

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+"""Round 82: the list frame closes above album art too."""
+from PyQt6.QtGui import QColor, QPixmap
+
+from tests.test_round80 import _sidebar
+
+
+def test_art_draws_the_frames_closing_line(qapp, tmp_path):
+    """A white cover inside the list's frame starts under a line in the
+    frame's own color, not straight on from the list."""
+    from lintunes.gui.sidebar import ART_RULE
+    window, sidebar = _sidebar(qapp, tmp_path)
+    art = sidebar.art
+    pixmap = QPixmap(10, 10)
+    pixmap.fill(QColor("white"))
+    art._pixmap = pixmap
+    art.has_art_changed.emit(True)
+    art._fit_height()
+    qapp.processEvents()
+    group = sidebar.list_area.grab().toImage()
+    # the frame's own left edge, halfway down the list
+    frame = group.pixelColor(0, group.height() // 4)
+    image = art.grab().toImage()
+    middle = image.width() // 2
+    for y in range(ART_RULE):
+        assert image.pixelColor(middle, y) == frame
+    assert image.pixelColor(middle, ART_RULE) == QColor("white")
+    window.close()