third_party/web_platform_tests/eventsource/request-status-error.htm

<!DOCTYPE html>
<html>
  <head>
    <title>EventSource: incorrect HTTP status code</title>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
  </head>
  <body>
    <div id="log"></div>
    <script>
      function statusTest(status) {
        var test = async_test(document.title + " (" + status +")")
        test.step(function() {
          var source = new EventSource("resources/status-error.py?status=" + status)
          source.onmessage = function() {
            test.step(function() {
              assert_unreached()
            })
            test.done()
          }
          source.onerror = function() {
            test.step(function() {
              assert_equals(this.readyState, this.CLOSED)
            }, this)
            test.done()
          }
        })
      }
      statusTest("204")
      statusTest("205")
      statusTest("210")
      statusTest("299")
      statusTest("404")
      statusTest("410")
      statusTest("503")
    </script>
  </body>
</html>