1 files changed, 21 insertions, 0 deletions
diff --git a/dom/security/test/csp/file_iframe_sandbox_document_write.html b/dom/security/test/csp/file_iframe_sandbox_document_write.html
new file mode 100644
index 000000000..cdfa87c8f
--- /dev/null
+++ b/dom/security/test/csp/file_iframe_sandbox_document_write.html
@@ -0,0 +1,21 @@
+<!DOCTYPE HTML>
+<html>
+<head> <meta charset="utf-8"> </head>
+<script type="text/javascript">
+  function ok(result, desc) {
+    window.parent.postMessage({ok: result, desc: desc}, "*");
+  }
+  function doStuff() {
+    var beforePrincipal = SpecialPowers.wrap(document).nodePrincipal;
+    document.open();
+    document.write("rewritten sandboxed document");
+    document.close();
+    var afterPrincipal = SpecialPowers.wrap(document).nodePrincipal;
+    ok(beforePrincipal.equals(afterPrincipal),
+       "document.write() does not change underlying principal");
+  }
+</script>
+<body onLoad='doStuff();'>
+  sandboxed with allow-scripts
+</body>
+</html>