1 files changed, 24 insertions, 0 deletions
diff --git a/docshell/test/browser/file_basic_multipart.sjs b/docshell/test/browser/file_basic_multipart.sjs
new file mode 100644
index 0000000000..5e89b93948
--- /dev/null
+++ b/docshell/test/browser/file_basic_multipart.sjs
@@ -0,0 +1,24 @@
+"use strict";
+
+function handleRequest(request, response) {
+  response.setHeader(
+    "Content-Type",
+    "multipart/x-mixed-replace;boundary=BOUNDARY",
+    false
+  );
+  response.setStatusLine(request.httpVersion, 200, "OK");
+
+  response.write(`--BOUNDARY
+Content-Type: text/html
+
+<h1>First</h1>
+Will be replaced
+--BOUNDARY
+Content-Type: text/html
+
+<h1>Second</h1>
+This will stick around
+--BOUNDARY
+--BOUNDARY--
+`);
+}