1 files changed, 14 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/api/response/json.any.js b/testing/web-platform/tests/fetch/api/response/json.any.js
new file mode 100644
index 0000000000..15f050e632
--- /dev/null
+++ b/testing/web-platform/tests/fetch/api/response/json.any.js
@@ -0,0 +1,14 @@
+// See also /xhr/json.any.js
+
+promise_test(async t => {
+  const response = await fetch(`data:,\uFEFF{ "b": 1, "a": 2, "b": 3 }`);
+  const json = await response.json();
+  assert_array_equals(Object.keys(json), ["b", "a"]);
+  assert_equals(json.a, 2);
+  assert_equals(json.b, 3);
+}, "Ensure the correct JSON parser is used");
+
+promise_test(async t => {
+  const response = await fetch("/xhr/resources/utf16-bom.json");
+  return promise_rejects_js(t, SyntaxError, response.json());
+}, "Ensure UTF-16 results in an error");