1 files changed, 31 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/aborted-parser.window.js b/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/aborted-parser.window.js
new file mode 100644
index 0000000000..ba7278ef18
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/aborted-parser.window.js
@@ -0,0 +1,31 @@
+// document.open() bails out early if there is an active parser with non-zero
+// script nesting level or if a load was aborted while there was an active
+// parser. window.stop() aborts the current parser, so once it has been called
+// while a parser is active, document.open() will no longer do anything to that
+// document,
+
+window.handlers = {};
+
+async_test(t => {
+  const frame = document.body.appendChild(document.createElement("iframe"));
+  t.add_cleanup(() => frame.remove());
+  frame.src = "resources/aborted-parser-frame.html";
+  window.handlers.afterOpen = t.step_func_done(() => {
+    const openCalled = frame.contentDocument.childNodes.length === 0;
+    assert_false(openCalled, "child document should not be empty");
+    assert_equals(frame.contentDocument.querySelector("p").textContent,
+                  "Text", "Should still have our paragraph");
+  });
+}, "document.open() after parser is aborted");
+
+async_test(t => {
+  const frame = document.body.appendChild(document.createElement("iframe"));
+  t.add_cleanup(() => frame.remove());
+  frame.src = "resources/aborted-parser-async-frame.html";
+  window.handlers.afterOpenAsync = t.step_func_done(() => {
+    const openCalled = frame.contentDocument.childNodes.length === 0;
+    assert_false(openCalled, "child document should not be empty");
+    assert_equals(frame.contentDocument.querySelector("p").textContent,
+                  "Text", "Should still have our paragraph");
+  });
+}, "async document.open() after parser is aborted");