fix(overlay): Linux X11/XWayland stacking, stale pause state, multi-copy selector (#101)

src/main/runtime/linux-overlay-window-shape.test.ts

@@ -0,0 +1,54 @@
+import { strict as assert } from 'node:assert';
+import { test } from 'node:test';
+import {
+  buildFullWindowShapeRect,
+  restoreLinuxOverlayWindowShape,
+} from './linux-overlay-window-shape';
+
+test('buildFullWindowShapeRect maps current bounds to a full-window shape', () => {
+  assert.deepEqual(buildFullWindowShapeRect({ x: 100, y: 50, width: 1919.6, height: 1080.4 }), {
+    x: 0,
+    y: 0,
+    width: 1920,
+    height: 1080,
+  });
+});
+
+test('buildFullWindowShapeRect rejects invalid dimensions', () => {
+  assert.equal(buildFullWindowShapeRect({ x: 0, y: 0, width: 0, height: 1080 }), null);
+  assert.equal(buildFullWindowShapeRect({ x: 0, y: 0, width: 1920, height: Number.NaN }), null);
+});
+
+test('restoreLinuxOverlayWindowShape restores a full drawable shape', () => {
+  const calls: unknown[] = [];
+
+  assert.equal(
+    restoreLinuxOverlayWindowShape({
+      isDestroyed: () => false,
+      getBounds: () => ({ x: 760, y: 152, width: 1920, height: 1080 }),
+      setShape: (rects) => calls.push(rects),
+    }),
+    true,
+  );
+  assert.deepEqual(calls, [[{ x: 0, y: 0, width: 1920, height: 1080 }]]);
+});
+
+test('restoreLinuxOverlayWindowShape skips destroyed or unsupported windows', () => {
+  assert.equal(
+    restoreLinuxOverlayWindowShape({
+      isDestroyed: () => true,
+      getBounds: () => ({ x: 0, y: 0, width: 1920, height: 1080 }),
+      setShape: () => {
+        throw new Error('should not shape destroyed windows');
+      },
+    }),
+    false,
+  );
+  assert.equal(
+    restoreLinuxOverlayWindowShape({
+      isDestroyed: () => false,
+      getBounds: () => ({ x: 0, y: 0, width: 1920, height: 1080 }),
+    }),
+    false,
+  );
+});