1 files changed, 8 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-font-loading/support/fontfaceset-loading-worker.js b/testing/web-platform/tests/css/css-font-loading/support/fontfaceset-loading-worker.js
new file mode 100644
index 0000000000..7357975661
--- /dev/null
+++ b/testing/web-platform/tests/css/css-font-loading/support/fontfaceset-loading-worker.js
@@ -0,0 +1,8 @@
+onconnect = async function(e) {
+  e.ports[0].onmessage = async () => {
+    let a = new FontFace("family_name_0", "url(/fonts/Ahem.ttf?fontfaceset-loading-worker)")
+    self.close()
+    await a.load()
+    let _ = new File([a])
+  }
+}