1 files changed, 42 insertions, 0 deletions
diff --git a/dom/browser-element/mochitest/browserElement_VisibilityChange.js b/dom/browser-element/mochitest/browserElement_VisibilityChange.js
new file mode 100644
index 000000000..d7db5f45d
--- /dev/null
+++ b/dom/browser-element/mochitest/browserElement_VisibilityChange.js
@@ -0,0 +1,42 @@
+/* Any copyright is dedicated to the public domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the onmozbrowservisibilitychange event works.
+'use strict';
+
+SimpleTest.waitForExplicitFinish();
+browserElementTestHelpers.setEnabledPref(true);
+
+var iframe1 = null;
+function runTest() {
+  iframe1 = document.createElement('iframe');
+  iframe1.setAttribute('mozbrowser', 'true');
+  document.body.appendChild(iframe1);
+
+  iframe1.src = 'data:text/html,<html><head><title>Title</title></head><body></body></html>';
+  checkVisibilityFalse();
+}
+
+function checkVisibilityFalse() {
+  iframe1.addEventListener('mozbrowservisibilitychange', function onvisibilitychange(e) {
+    iframe1.removeEventListener(e.type, onvisibilitychange);
+
+    is(e.detail.visible, false, 'Visibility should be false');
+    checkVisibilityTrue();
+  });
+
+  iframe1.setVisible(false);
+}
+
+function checkVisibilityTrue() {
+  iframe1.addEventListener('mozbrowservisibilitychange', function onvisibilitychange(e) {
+    iframe1.removeEventListener(e.type, onvisibilitychange);
+
+    is(e.detail.visible, true, 'Visibility should be true');
+    SimpleTest.finish();
+  });
+
+  iframe1.setVisible(true);
+}
+
+addEventListener('testready', runTest);