1 files changed, 43 insertions, 0 deletions
diff --git a/testing/web-platform/tests/xhr/open-after-stop.window.js b/testing/web-platform/tests/xhr/open-after-stop.window.js
new file mode 100644
index 0000000000..e836a523f8
--- /dev/null
+++ b/testing/web-platform/tests/xhr/open-after-stop.window.js
@@ -0,0 +1,43 @@
+// window.stop() below prevents the load event from firing, so wait until it is
+// fired to start the test.
+setup({explicit_done: true });
+
+onload = () => {
+  async_test(function(t) {
+    const client = new XMLHttpRequest();
+
+    const result = [];
+    const expected = [
+      'readystatechange', 0, 1,  // open()
+    ];
+
+    let state = 0;
+
+    client.onreadystatechange = t.step_func(() => {
+      result.push('readystatechange', state, client.readyState);
+    });
+    client.onabort = t.unreached_func("abort should not be fired after window.stop() and open()");
+    client.onloadend = t.unreached_func("loadend should not be fired after window.stop() and open()");
+
+    client.open("GET", "resources/well-formed.xml");
+    assert_equals(client.readyState, 1);
+
+    state = 1;
+    client.send(null);
+    state = 2;
+    window.stop();
+    // Unlike client.abort(), window.stop() does not change readyState
+    // immediately, rather through a task...
+    assert_equals(client.readyState, 1);
+    state = 3;
+    // ... which is then canceled when we open a new request anyway.
+    client.open("GET", "resources/well-formed.xml");
+    assert_equals(client.readyState, 1);
+    assert_array_equals(result, expected);
+
+    // Give the abort and loadend events a chance to fire (erroneously) before
+    // calling this a success.
+    t.step_timeout(t.step_func_done(), 1000);
+  }, "open() after window.stop()");
+  done();
+};