1 files changed, 21 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/document-write/iframe_009.html b/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/document-write/iframe_009.html
new file mode 100644
index 0000000000..8b271c7a03
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/dynamic-markup-insertion/document-write/iframe_009.html
@@ -0,0 +1,21 @@
+<!doctype html>
+<title>document.write plaintext into iframe</title>
+<script src="/resources/testharness.js"></script><script src="/resources/testharnessreport.js"></script>
+<iframe id="test"></iframe>
+<script>
+test(function() {
+  var iframe = document.getElementById("test");
+  var s = "<table><tr><td>Text</tr><plaintext><tr><td>Filler ";
+  for (var i=0; i<s.length; i++) {
+    iframe.contentDocument.write(s[i]);
+  }
+  iframe.contentDocument.close();
+  assert_equals(iframe.contentDocument.body.childNodes[0].nodeType, document.ELEMENT_NODE);
+  assert_equals(iframe.contentDocument.body.childNodes[0].localName, "plaintext");
+  assert_equals(iframe.contentDocument.body.childNodes[0].textContent, "<tr><td>Filler ");
+  assert_equals(iframe.contentDocument.body.childNodes[1].nodeType, document.ELEMENT_NODE);
+  assert_equals(iframe.contentDocument.body.childNodes[1].localName, "table");
+  assert_equals(iframe.contentDocument.body.childNodes[1].textContent, "Text");
+});
+</script>
+<div id="log"></div>