Wait for full screen event before leaving kiosk mode

spec/api-browser-window-spec.js

@@ -1474,14 +1474,20 @@ describe('BrowserWindow module', function () {
       // Only implemented on macOS.
       if (process.platform !== 'darwin') return
 
-      it('can be changed with setKiosk method', function () {
+      it('can be changed with setKiosk method', function (done) {
         w.destroy()
         w = new BrowserWindow()
         w.setKiosk(true)
         assert.equal(w.isKiosk(), true)
+
+        w.once('enter-full-screen', () => {
           w.setKiosk(false)
           assert.equal(w.isKiosk(), false)
         })
+        w.once('leave-full-screen', () => {
+          done()
+        })
+      })
     })
 
     describe('fullscreen state', function () {