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

src/main/runtime/linux-x11-cursor-point.test.ts

@@ -0,0 +1,82 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import {
+  createLinuxX11CursorPointReader,
+  parseXdotoolMouseLocation,
+} from './linux-x11-cursor-point';
+
+test('parseXdotoolMouseLocation parses root cursor coordinates', () => {
+  assert.deepEqual(
+    parseXdotoolMouseLocation(`X=1700
+Y=1050
+SCREEN=0
+WINDOW=44040194
+`),
+    { x: 1700, y: 1050 },
+  );
+});
+
+test('createLinuxX11CursorPointReader returns cached X11 cursor point over stale fallback', async () => {
+  let now = 1000;
+  const pendingCommand: { resolve?: (value: string) => void } = {};
+  const calls: Array<{ command: string; args: string[] }> = [];
+  const reader = createLinuxX11CursorPointReader({
+    env: { DISPLAY: ':1' },
+    platform: 'linux',
+    now: () => now,
+    runCommand: (command, args) => {
+      calls.push({ command, args });
+      return new Promise((resolve) => {
+        pendingCommand.resolve = resolve;
+      });
+    },
+  });
+
+  assert.deepEqual(reader.getCursorScreenPoint({ x: 877, y: 718 }), { x: 877, y: 718 });
+  assert.deepEqual(calls, [{ command: 'xdotool', args: ['getmouselocation', '--shell'] }]);
+
+  assert.ok(pendingCommand.resolve);
+  pendingCommand.resolve(`X=1700
+Y=1050
+SCREEN=0
+WINDOW=44040194
+`);
+  await new Promise((resolve) => setImmediate(resolve));
+
+  now += 60;
+  assert.deepEqual(reader.getCursorScreenPoint({ x: 877, y: 718 }), { x: 1700, y: 1050 });
+});
+
+test('createLinuxX11CursorPointReader does not spawn off X11 Linux', () => {
+  const calls: string[] = [];
+  const reader = createLinuxX11CursorPointReader({
+    env: {},
+    platform: 'linux',
+    runCommand: async (command) => {
+      calls.push(command);
+      return '';
+    },
+  });
+
+  assert.deepEqual(reader.getCursorScreenPoint({ x: 5, y: 6 }), { x: 5, y: 6 });
+  assert.deepEqual(calls, []);
+});
+
+test('createLinuxX11CursorPointReader does not spawn for supported native Wayland compositors', () => {
+  const calls: string[] = [];
+  const reader = createLinuxX11CursorPointReader({
+    env: {
+      DISPLAY: ':1',
+      WAYLAND_DISPLAY: 'wayland-0',
+      HYPRLAND_INSTANCE_SIGNATURE: 'hypr',
+    },
+    platform: 'linux',
+    runCommand: async (command) => {
+      calls.push(command);
+      return '';
+    },
+  });
+
+  assert.deepEqual(reader.getCursorScreenPoint({ x: 7, y: 8 }), { x: 7, y: 8 });
+  assert.deepEqual(calls, []);
+});