1 files changed, 14 insertions, 0 deletions
diff --git a/browser/base/content/test/general/browser_bug484315.js b/browser/base/content/test/general/browser_bug484315.js
new file mode 100644
index 0000000000..21b4e69a33
--- /dev/null
+++ b/browser/base/content/test/general/browser_bug484315.js
@@ -0,0 +1,14 @@
+add_task(async function test() {
+  window.open("about:blank", "", "width=100,height=100,noopener");
+
+  let win = Services.wm.getMostRecentWindow("navigator:browser");
+  Services.prefs.setBoolPref("browser.tabs.closeWindowWithLastTab", false);
+  win.gBrowser.removeCurrentTab();
+  ok(win.closed, "popup is closed");
+
+  // clean up
+  if (!win.closed) {
+    win.close();
+  }
+  Services.prefs.clearUserPref("browser.tabs.closeWindowWithLastTab");
+});