1 files changed, 20 insertions, 0 deletions
diff --git a/toolkit/components/antitracking/test/browser/browser_partitionedMessaging.js b/toolkit/components/antitracking/test/browser/browser_partitionedMessaging.js
new file mode 100644
index 0000000000..683b1cc874
--- /dev/null
+++ b/toolkit/components/antitracking/test/browser/browser_partitionedMessaging.js
@@ -0,0 +1,20 @@
+PartitionedStorageHelper.runTestInNormalAndPrivateMode(
+  "BroadcastChannel",
+  async (win3rdParty, win1stParty, allowed) => {
+    let a = new win3rdParty.BroadcastChannel("hello");
+    ok(!!a, "BroadcastChannel should be created by 3rd party iframe");
+
+    let b = new win1stParty.BroadcastChannel("hello");
+    ok(!!b, "BroadcastChannel should be created by 1st party iframe");
+
+    // BroadcastChannel uses the incument global, this means that its CTOR will
+    // always use the 3rd party iframe's window as global.
+  },
+  async _ => {
+    await new Promise(resolve => {
+      Services.clearData.deleteData(Ci.nsIClearDataService.CLEAR_ALL, value =>
+        resolve()
+      );
+    });
+  }
+);