1 files changed, 40 insertions, 0 deletions
diff --git a/browser/base/content/test/general/browser_unloaddialogs.js b/browser/base/content/test/general/browser_unloaddialogs.js
new file mode 100644
index 0000000000..8848066507
--- /dev/null
+++ b/browser/base/content/test/general/browser_unloaddialogs.js
@@ -0,0 +1,40 @@
+var testUrls = [
+  "data:text/html,<script>" +
+    "function handle(evt) {" +
+    "evt.target.removeEventListener(evt.type, handle, true);" +
+    "try { alert('This should NOT appear'); } catch(e) { }" +
+    "}" +
+    "window.addEventListener('pagehide', handle, true);" +
+    "window.addEventListener('beforeunload', handle, true);" +
+    "window.addEventListener('unload', handle, true);" +
+    "</script><body>Testing alert during pagehide/beforeunload/unload</body>",
+  "data:text/html,<script>" +
+    "function handle(evt) {" +
+    "evt.target.removeEventListener(evt.type, handle, true);" +
+    "try { prompt('This should NOT appear'); } catch(e) { }" +
+    "}" +
+    "window.addEventListener('pagehide', handle, true);" +
+    "window.addEventListener('beforeunload', handle, true);" +
+    "window.addEventListener('unload', handle, true);" +
+    "</script><body>Testing prompt during pagehide/beforeunload/unload</body>",
+  "data:text/html,<script>" +
+    "function handle(evt) {" +
+    "evt.target.removeEventListener(evt.type, handle, true);" +
+    "try { confirm('This should NOT appear'); } catch(e) { }" +
+    "}" +
+    "window.addEventListener('pagehide', handle, true);" +
+    "window.addEventListener('beforeunload', handle, true);" +
+    "window.addEventListener('unload', handle, true);" +
+    "</script><body>Testing confirm during pagehide/beforeunload/unload</body>",
+];
+
+add_task(async function() {
+  for (let url of testUrls) {
+    let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, url);
+    ok(true, "Loaded page " + url);
+    // Wait one turn of the event loop before closing, so everything settles.
+    await new Promise(resolve => setTimeout(resolve, 0));
+    BrowserTestUtils.removeTab(tab);
+    ok(true, "Closed page " + url + " without timeout");
+  }
+});