1 files changed, 25 insertions, 0 deletions
diff --git a/testing/web-platform/tests/websockets/interfaces/WebSocket/send/004.html b/testing/web-platform/tests/websockets/interfaces/WebSocket/send/004.html
new file mode 100644
index 0000000000..7125d1922a
--- /dev/null
+++ b/testing/web-platform/tests/websockets/interfaces/WebSocket/send/004.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<title>WebSockets: send() with unpaired surrogate when readyState is CONNECTING</title>
+
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=../../../constants.sub.js></script>
+<meta name="variant" content="?default">
+<meta name="variant" content="?wss">
+<div id=log></div>
+<script>
+test(function(t) {
+  var ws = new WebSocket(SCHEME_DOMAIN_PORT+'/');
+  assert_throws_dom("INVALID_STATE_ERR", function(){ws.send('a\uDC00x')});
+}, "lone low surrogate");
+
+test(function(t) {
+  var ws = new WebSocket(SCHEME_DOMAIN_PORT+'/');
+  assert_throws_dom("INVALID_STATE_ERR", function(){ws.send('a\uD800x')});
+}, "lone high surrogate");
+
+test(function(t) {
+  var ws = new WebSocket(SCHEME_DOMAIN_PORT+'/');
+  assert_throws_dom("INVALID_STATE_ERR", function(){ws.send('a\uDC00\uD800x')});
+}, "surrogates in wrong order");
+</script>