diff --git a/js/x11/examples/smoketest/map_unmap.js b/js/x11/examples/smoketest/map_unmap.js
new file mode 100644
index 0000000..6c0225a
--- /dev/null
+++ b/js/x11/examples/smoketest/map_unmap.js
@@ -0,0 +1,25 @@
+var x11 = require('../../lib');
+
+var xclient = x11.createClient();
+var PointerMotion = x11.eventMask.PointerMotion;
+var mapped = true;
+
+xclient.on('connect', function(err, display) {
+    var X = this;
+    var root = display.screen[0].root;
+    var wid = X.AllocID();
+    var white = display.screen[0].white_pixel;
+    var black = display.screen[0].black_pixel;
+
+    X.CreateWindow(wid, root, 10, 10, 400, 300, 1, 1, 0, { backgroundPixel: white, eventMask: PointerMotion });
+    X.MapWindow(wid);
+    setInterval(function() {
+        if (!mapped) {
+            X.MapWindow(wid);
+        } else {
+            X.UnmapWindow(wid);
+        }
+        mapped = !mapped;
+    }, 1000);
+    
+});
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