1 files changed, 61 insertions, 0 deletions
diff --git a/browser/base/content/test/tabdialogs/browser_multiple_dialog_navigation.js b/browser/base/content/test/tabdialogs/browser_multiple_dialog_navigation.js
new file mode 100644
index 0000000000..9d66ac1d7e
--- /dev/null
+++ b/browser/base/content/test/tabdialogs/browser_multiple_dialog_navigation.js
@@ -0,0 +1,61 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function test_multiple_dialog_navigation() {
+  await BrowserTestUtils.withNewTab(
+    "https://example.com/gone",
+    async browser => {
+      let firstDialogPromise = BrowserTestUtils.promiseAlertDialogOpen();
+      // We're gonna queue up some dialogs, and navigate. The tasks queueing the dialog
+      // are going to get aborted when the navigation happened, but that's OK because by
+      // that time they will have done their job. Detect and swallow that specific
+      // exception:
+      let navigationCatcher = e => {
+        if (e.name == "AbortError" && e.message.includes("destroyed before")) {
+          return;
+        }
+        throw e;
+      };
+      // Queue up 2 dialogs
+      let firstTask = SpecialPowers.spawn(browser, [], async function () {
+        content.eval(`alert('hi');`);
+      }).catch(navigationCatcher);
+      let secondTask = SpecialPowers.spawn(browser, [], async function () {
+        content.eval(`alert('hi again');`);
+      }).catch(navigationCatcher);
+      info("Waiting for first dialog.");
+      let dialogWin = await firstDialogPromise;
+
+      let secondDialogPromise = BrowserTestUtils.promiseAlertDialogOpen();
+      dialogWin.document
+        .getElementById("commonDialog")
+        .getButton("accept")
+        .click();
+      dialogWin = null;
+
+      info("Wait for second dialog to appear.");
+      let secondDialogWin = await secondDialogPromise;
+      let closedPromise = BrowserTestUtils.waitForEvent(
+        secondDialogWin,
+        "unload"
+      );
+      let loadedOtherPage = BrowserTestUtils.waitForLocationChange(
+        gBrowser,
+        "https://example.org/gone"
+      );
+      BrowserTestUtils.loadURIString(browser, "https://example.org/gone");
+      info("Waiting for the next page to load.");
+      await loadedOtherPage;
+      info(
+        "Waiting for second dialog to close. If we time out here that's a bug!"
+      );
+      await closedPromise;
+      is(secondDialogWin.closed, true, "Should have closed second dialog.");
+      info("Ensure content tasks are done");
+      await secondTask;
+      await firstTask;
+    }
+  );
+});