1 files changed, 30 insertions, 0 deletions
diff --git a/browser/components/preferences/tests/browser_bug1018066_resetScrollPosition.js b/browser/components/preferences/tests/browser_bug1018066_resetScrollPosition.js
new file mode 100644
index 0000000000..bc928656ab
--- /dev/null
+++ b/browser/components/preferences/tests/browser_bug1018066_resetScrollPosition.js
@@ -0,0 +1,30 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var originalWindowHeight;
+registerCleanupFunction(function () {
+  window.resizeTo(window.outerWidth, originalWindowHeight);
+  while (gBrowser.tabs[1]) {
+    gBrowser.removeTab(gBrowser.tabs[1]);
+  }
+});
+
+add_task(async function () {
+  originalWindowHeight = window.outerHeight;
+  window.resizeTo(window.outerWidth, 300);
+  let prefs = await openPreferencesViaOpenPreferencesAPI("paneSearch", {
+    leaveOpen: true,
+  });
+  is(prefs.selectedPane, "paneSearch", "Search pane was selected");
+  let mainContent = gBrowser.contentDocument.querySelector(".main-content");
+  mainContent.scrollTop = 50;
+  is(mainContent.scrollTop, 50, "main-content should be scrolled 50 pixels");
+
+  await gBrowser.contentWindow.gotoPref("paneGeneral");
+
+  is(
+    mainContent.scrollTop,
+    0,
+    "Switching to a different category should reset the scroll position"
+  );
+});