Add shell plugin model tests

shell/plugins/services/idle/IdleModel.js

@@ -0,0 +1,52 @@
+function secondsFromConfig(value, fallback) {
+  var n = Number(value)
+  if (!isFinite(n) || n < 0) return fallback
+  return Math.floor(n)
+}
+
+function eventParts(event, count) {
+  try {
+    if (event && event.parse) return event.parse(count)
+  } catch (error) {
+  }
+  return String(event && event.data ? event.data : "").split(",")
+}
+
+function screensaverWindowsAfter(windows, address, visible) {
+  var key = String(address || "")
+  if (!key) {
+    var current = windows || {}
+    var existingCount = 0
+    for (var currentKey in current) {
+      if (current[currentKey]) existingCount++
+    }
+    return { windows: current, count: existingCount }
+  }
+
+  var next = {}
+  var count = 0
+  for (var existing in windows || {}) {
+    if (existing !== key && windows[existing]) {
+      next[existing] = true
+      count++
+    }
+  }
+
+  if (visible) {
+    next[key] = true
+    count++
+  }
+
+  return {
+    windows: next,
+    count: count
+  }
+}
+
+if (typeof module !== "undefined") {
+  module.exports = {
+    secondsFromConfig: secondsFromConfig,
+    eventParts: eventParts,
+    screensaverWindowsAfter: screensaverWindowsAfter
+  }
+}

shell/plugins/services/idle/Service.qml

@@ -3,6 +3,7 @@ import Quickshell
 import Quickshell.Hyprland
 import Quickshell.Io
 import Quickshell.Wayland
+import "IdleModel.js" as IdleModel
 
 Item {
   id: root
@@ -36,9 +37,7 @@ Item {
   property int screensaverWindowCount: 0
 
   function secondsFromConfig(value, fallback) {
-    var n = Number(value)
-    if (!isFinite(n) || n < 0) return fallback
-    return Math.floor(n)
+    return IdleModel.secondsFromConfig(value, fallback)
   }
 
   function nowIso() {
@@ -117,25 +116,9 @@ Item {
   }
 
   function setScreensaverWindow(address, visible) {
-    var key = String(address || "")
-    if (!key) return
-
-    var next = {}
-    var count = 0
-    for (var existing in root.screensaverWindows) {
-      if (existing !== key && root.screensaverWindows[existing]) {
-        next[existing] = true
-        count++
-      }
-    }
-
-    if (visible) {
-      next[key] = true
-      count++
-    }
-
-    root.screensaverWindows = next
-    root.screensaverWindowCount = count
+    var next = IdleModel.screensaverWindowsAfter(root.screensaverWindows, address, visible)
+    root.screensaverWindows = next.windows
+    root.screensaverWindowCount = next.count
   }
 
   function handleScreensaverWindowOpened(address) {
@@ -156,10 +139,7 @@ Item {
   }
 
   function eventParts(event, count) {
-    try {
-      if (event && event.parse) return event.parse(count)
-    } catch (error) {}
-    return String(event && event.data ? event.data : "").split(",")
+    return IdleModel.eventParts(event, count)
   }
 
   function handleHyprlandEvent(event) {