add test

atom/renderer/lib/override.coffee

@@ -122,7 +122,7 @@ Object.defineProperty window.history, 'length',
 Object.defineProperty document, 'hidden',
   get: ->
     currentWindow = remote.getCurrentWindow()
-    !currentWindow.isFocused() || !currentWindow.isVisible()
+    currentWindow.isMinimized() || !currentWindow.isVisible()
 
 Object.defineProperty document, 'visibilityState',
   get: ->

spec/chromium-spec.coffee

@@ -45,6 +45,14 @@ describe 'chromium feature', ->
         done()
       w.loadURL url
 
+    it 'is set correctly when window is inactive', (done) ->
+      w = new BrowserWindow(show:false)
+      w.webContents.on 'ipc-message', (event, args) ->
+        assert.deepEqual args, ['hidden', false]
+        done()
+      w.showInactive()
+      w.loadURL url
+
   xdescribe 'navigator.webkitGetUserMedia', ->
     it 'calls its callbacks', (done) ->
       @timeout 5000