1 files changed, 31 insertions, 0 deletions
diff --git a/browser/components/customizableui/test/browser_1096763_seen_widgets_post_reset.js b/browser/components/customizableui/test/browser_1096763_seen_widgets_post_reset.js
new file mode 100644
index 000000000..b5a325afb
--- /dev/null
+++ b/browser/components/customizableui/test/browser_1096763_seen_widgets_post_reset.js
@@ -0,0 +1,31 @@
+"use strict";
+
+const BUTTONID = "test-seenwidget-post-reset";
+
+add_task(function*() {
+  CustomizableUI.createWidget({
+    id: BUTTONID,
+    label: "Test widget seen post reset",
+    defaultArea: CustomizableUI.AREA_NAVBAR
+  });
+
+  const kPrefCustomizationState = "browser.uiCustomization.state";
+  let bsPass = Cu.import("resource:///modules/CustomizableUI.jsm", {});
+  ok(bsPass.gSeenWidgets.has(BUTTONID), "Widget should be seen after createWidget is called.");
+  CustomizableUI.reset();
+  ok(bsPass.gSeenWidgets.has(BUTTONID), "Widget should still be seen after reset.");
+  ok(!Services.prefs.prefHasUserValue(kPrefCustomizationState), "Pref shouldn't be set right now, because that'd break undo.");
+  CustomizableUI.addWidgetToArea(BUTTONID, CustomizableUI.AREA_NAVBAR);
+  gCustomizeMode.removeFromArea(document.getElementById(BUTTONID));
+  let hasUserValue = Services.prefs.prefHasUserValue(kPrefCustomizationState);
+  ok(hasUserValue, "Pref should be set right now.");
+  if (hasUserValue) {
+    let seenArray = JSON.parse(Services.prefs.getCharPref(kPrefCustomizationState)).seen;
+    isnot(seenArray.indexOf(BUTTONID), -1, "Widget should be in saved 'seen' list.");
+  }
+});
+
+registerCleanupFunction(function() {
+  CustomizableUI.destroyWidget(BUTTONID);
+  CustomizableUI.reset();
+});