1 files changed, 29 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/api/basic/request-headers-nonascii.any.js b/testing/web-platform/tests/fetch/api/basic/request-headers-nonascii.any.js
new file mode 100644
index 0000000000..4a9a801138
--- /dev/null
+++ b/testing/web-platform/tests/fetch/api/basic/request-headers-nonascii.any.js
@@ -0,0 +1,29 @@
+// META: global=window,worker
+
+// This tests characters that are not
+// https://infra.spec.whatwg.org/#ascii-code-point
+// but are still
+// https://infra.spec.whatwg.org/#byte-value
+// in request header values.
+// Such request header values are valid and thus sent to servers.
+// Characters outside the #byte-value range are tested e.g. in
+// fetch/api/headers/headers-errors.html.
+
+promise_test(() => {
+  return fetch(
+    "../resources/inspect-headers.py?headers=accept|x-test",
+    {headers: {
+      "Accept": "before-æøå-after",
+      "X-Test": "before-ß-after"
+    }})
+    .then(res => {
+      assert_equals(
+          res.headers.get("x-request-accept"),
+          "before-æøå-after",
+          "Accept Header");
+      assert_equals(
+          res.headers.get("x-request-x-test"),
+          "before-ß-after",
+          "X-Test Header");
+    });
+}, "Non-ascii bytes in request headers");