1 files changed, 50 insertions, 0 deletions
diff --git a/remote/cdp/test/browser/page/browser_javascriptDialog_otherTarget.js b/remote/cdp/test/browser/page/browser_javascriptDialog_otherTarget.js
new file mode 100644
index 0000000000..c57f5d5151
--- /dev/null
+++ b/remote/cdp/test/browser/page/browser_javascriptDialog_otherTarget.js
@@ -0,0 +1,50 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { PromptTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/PromptTestUtils.sys.mjs"
+);
+
+// Test that javascript dialog events are emitted by the page domain only if
+// the dialog is created for the window of the target.
+add_task(async function ({ client }) {
+  const { Page } = client;
+
+  info("Enable the page domain");
+  await Page.enable();
+
+  // Add a listener for dialogs on the test page.
+  Page.javascriptDialogOpening(() => {
+    ok(false, "Should never receive this event");
+  });
+
+  info("Open another tab");
+  const otherTab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    toDataURL("test-page")
+  );
+  is(gBrowser.selectedTab, otherTab, "Selected tab is now the new tab");
+
+  // Create a promise that resolve when dialog prompt is created.
+  // It will also take care of closing the dialog.
+  let onOtherPageDialog = PromptTestUtils.handleNextPrompt(
+    gBrowser.selectedBrowser,
+    { modalType: Services.prompt.MODAL_TYPE_CONTENT, promptType: "alert" },
+    { buttonNumClick: 0 }
+  );
+
+  info("Trigger an alert in the second page");
+  SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
+    content.alert("test");
+  });
+
+  info("Wait for the alert to be detected and closed");
+  await onOtherPageDialog;
+
+  info("Call bringToFront on the test page to make sure we received");
+  await Page.bringToFront();
+
+  BrowserTestUtils.removeTab(otherTab);
+});