v0.51.2: album art sits in the empty art panel's own frame, below the list, instead of inside the list's frame

tests/test_round82.py

@@ -1,27 +1,45 @@
-"""Round 82: the list frame closes above album art too."""
+"""Round 82: album art sits in the same panel, in the same place, as the
+empty art panel: the cover changes what is inside the frame, never the
+frame."""
 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
+def _show_art(qapp, art, color):
     pixmap = QPixmap(10, 10)
-    pixmap.fill(QColor("white"))
+    pixmap.fill(QColor(color))
     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)
+
+
+def test_art_keeps_the_empty_panels_place_and_border(qapp, tmp_path):
+    from lintunes.gui.sidebar import NO_ART_GAP
+    window, sidebar = _sidebar(qapp, tmp_path)
+    art = sidebar.art
+    empty_geometry = art.geometry()
+    empty = art.grab().toImage()
+    _show_art(qapp, art, "white")
+    assert art.parentWidget() is sidebar
+    assert art.geometry() == empty_geometry
+    assert art.height() == art.width() + NO_ART_GAP
     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")
+    # the gap and the panel's darker top edge, unchanged
+    for y in range(NO_ART_GAP + 1):
+        assert image.pixelColor(middle, y) == empty.pixelColor(middle, y)
+    # ...and the cover just inside it
+    assert image.pixelColor(middle, NO_ART_GAP + 2) == QColor("white")
+    assert image.pixelColor(middle, image.height() // 2) == QColor("white")
+    window.close()
+
+
+def test_art_changes_no_layout(qapp, tmp_path):
+    window, sidebar = _sidebar(qapp, tmp_path)
+    list_geometry = sidebar.list_area.geometry()
+    _show_art(qapp, sidebar.art, "red")
+    sidebar.art.has_art_changed.emit(True)
+    qapp.processEvents()
+    assert sidebar.list_area.geometry() == list_geometry
     window.close()