1 files changed, 10 insertions, 0 deletions
diff --git a/testing/web-platform/tests/workers/support/ErrorEvent.js b/testing/web-platform/tests/workers/support/ErrorEvent.js
new file mode 100644
index 000000000..22ea6d4fb
--- /dev/null
+++ b/testing/web-platform/tests/workers/support/ErrorEvent.js
@@ -0,0 +1,10 @@
+onmessage = function(evt)
+{
+    throw(new Error(evt.data));
+}
+
+onerror = function(message, location, line, col)
+{
+    postMessage( {"message": message, "filename": location, "lineno": line, "colno": col} );
+    return false; // "not handled" so the error propagates up to the Worker object
+}