1 files changed, 23 insertions, 0 deletions
diff --git a/testing/web-platform/tests/xhr/json.any.js b/testing/web-platform/tests/xhr/json.any.js
new file mode 100644
index 0000000000..0f49ff5ab1
--- /dev/null
+++ b/testing/web-platform/tests/xhr/json.any.js
@@ -0,0 +1,23 @@
+// See also /fetch/api/response/json.any.js
+
+async_test(t => {
+  const xhr = new XMLHttpRequest();
+  xhr.responseType = "json";
+  xhr.open("GET", `data:,\uFEFF{ "b": 1, "a": 2, "b": 3 }`);
+  xhr.send();
+  xhr.onload = t.step_func_done(() => {
+    assert_array_equals(Object.keys(xhr.response), ["b", "a"]);
+    assert_equals(xhr.response.a, 2);
+    assert_equals(xhr.response.b, 3);
+  });
+}, "Ensure the correct JSON parser is used");
+
+async_test(t => {
+  const client = new XMLHttpRequest();
+  client.responseType = 'json';
+  client.open("GET", "resources/utf16-bom.json");
+  client.send();
+  client.onload = t.step_func_done(() => {
+    assert_equals(client.response, null);
+  });
+}, "Ensure UTF-16 results in an error");