1 files changed, 12 insertions, 0 deletions
diff --git a/testing/web-platform/tests/content-security-policy/support/ping.js b/testing/web-platform/tests/content-security-policy/support/ping.js
new file mode 100644
index 0000000000..750ae45f96
--- /dev/null
+++ b/testing/web-platform/tests/content-security-policy/support/ping.js
@@ -0,0 +1,12 @@
+if (typeof ServiceWorkerGlobalScope === "function") {
+  self.onmessage = function (e) { e.source.postMessage("ping"); };
+} else if (typeof SharedWorkerGlobalScope === "function") {
+  onconnect = function (e) {
+    var port = e.ports[0];
+
+    port.onmessage = function () { port.postMessage("ping"); }
+    port.postMessage("ping");
+  };
+} else if (typeof DedicatedWorkerGlobalScope === "function") {
+  self.postMessage("ping");
+}