1 files changed, 54 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-embed-element/embed-network-error.sub.html b/testing/web-platform/tests/html/semantics/embedded-content/the-embed-element/embed-network-error.sub.html
new file mode 100644
index 0000000000..bae995c101
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/embedded-content/the-embed-element/embed-network-error.sub.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Network errors with embed elements</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+<script>
+"use strict";
+
+async_test(t => {
+  const embed = document.createElement("embed");
+  embed.src = "//{{hosts[][nonexistent]}}/";
+  embed.onload = () => t.done();
+  embed.onerror = t.unreached_func("error event must not fire");
+  document.body.append(embed);
+}, "new embed: nonexistent host");
+
+async_test(t => {
+  const embed = document.createElement("embed");
+  embed.src = "../resources/not-embeddable.html";
+  embed.onload = () => t.done();
+  embed.onerror = t.unreached_func("error event must not fire");
+  document.body.append(embed);
+}, "new embed: X-Frame-Options prevents embedding");
+
+async_test(t => {
+  const embed = document.createElement("embed");
+  embed.src = "/common/blank.html";
+  embed.name = "existingEmbed1";
+  embed.onload = t.step_func(() => {
+    embed.onload = () => t.done();
+    embed.onerror = t.unreached_func("error event must not fire 2");
+
+    frames.existingEmbed1.location.href = "//{{hosts[][nonexistent]}}/";
+  });
+  embed.onerror = t.unreached_func("error event must not fire 1");
+  document.body.append(embed);
+}, "navigating an existing embed: nonexistent host");
+
+async_test(t => {
+  const embed = document.createElement("embed");
+  embed.src = "/common/blank.html";
+  embed.name = "existingEmbed2";
+  embed.onload = t.step_func(() => {
+    embed.onload = () => t.done();
+    embed.onerror = t.unreached_func("error event must not fire 2");
+
+    frames.existingEmbed2.location.href = "../resources/not-embeddable.html";
+  });
+  embed.onerror = t.unreached_func("error event must not fire 1");
+  document.body.append(embed);
+}, "navigating an existing embed: X-Frame-Options prevents embedding");
+</script>