1 files changed, 27 insertions, 0 deletions
diff --git a/testing/web-platform/tests/websockets/Close-delayed.any.js b/testing/web-platform/tests/websockets/Close-delayed.any.js
new file mode 100644
index 0000000000..212925bb93
--- /dev/null
+++ b/testing/web-platform/tests/websockets/Close-delayed.any.js
@@ -0,0 +1,27 @@
+// META: script=constants.sub.js
+// META: variant=
+// META: variant=?wss
+// META: variant=?wpt_flags=h2
+
+var test = async_test("Create WebSocket - Close the Connection - close should not emit until handshake completes - Connection should be closed");
+
+var wsocket = new WebSocket(`${SCHEME_DOMAIN_PORT}/delayed-passive-close`);
+var startTime;
+var isOpenCalled = false;
+
+wsocket.addEventListener('open', test.step_func(function(evt) {
+  startTime = performance.now();
+  wsocket.close();
+  isOpenCalled = true;
+}), true);
+
+wsocket.addEventListener('close', test.step_func(function(evt) {
+  const elapsed = performance.now() - startTime;
+  assert_true(isOpenCalled, "WebSocket connection should be open");
+  assert_equals(wsocket.readyState, 3, "readyState should be 3(CLOSED)");
+  assert_equals(evt.wasClean, true, "wasClean should be TRUE");
+  const jitterAllowance = 100;
+  assert_greater_than_equal(elapsed, 1000 - jitterAllowance,
+    'one second should have elapsed')
+  test.done();
+}), true);