1 files changed, 5 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/api/basic/header-value-null-byte.any.js b/testing/web-platform/tests/fetch/api/basic/header-value-null-byte.any.js
new file mode 100644
index 0000000000..741d83bf7a
--- /dev/null
+++ b/testing/web-platform/tests/fetch/api/basic/header-value-null-byte.any.js
@@ -0,0 +1,5 @@
+// META: global=window,worker
+
+promise_test(t => {
+  return promise_rejects_js(t, TypeError, fetch("../../../xhr/resources/parse-headers.py?my-custom-header="+encodeURIComponent("x\0x")));
+}, "Ensure fetch() rejects null bytes in headers");