1 files changed, 17 insertions, 0 deletions
diff --git a/toolkit/components/antitracking/test/browser/partitionedSharedWorker.js b/toolkit/components/antitracking/test/browser/partitionedSharedWorker.js
new file mode 100644
index 0000000000..5ac4ec9f27
--- /dev/null
+++ b/toolkit/components/antitracking/test/browser/partitionedSharedWorker.js
@@ -0,0 +1,17 @@
+let value = "";
+self.onconnect = e => {
+  e.ports[0].onmessage = event => {
+    if (event.data.what === "get") {
+      e.ports[0].postMessage(value);
+      return;
+    }
+
+    if (event.data.what === "put") {
+      value = event.data.value;
+      return;
+    }
+
+    // Error.
+    e.ports[0].postMessage(-1);
+  };
+};