1 files changed, 17 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/api/response/response-stream-disturbed-by-pipe.any.js b/testing/web-platform/tests/fetch/api/response/response-stream-disturbed-by-pipe.any.js
new file mode 100644
index 0000000000..5341b75271
--- /dev/null
+++ b/testing/web-platform/tests/fetch/api/response/response-stream-disturbed-by-pipe.any.js
@@ -0,0 +1,17 @@
+// META: global=window,worker
+
+test(() => {
+  const r = new Response(new ReadableStream());
+  // highWaterMark: 0 means that nothing will actually be read from the body.
+  r.body.pipeTo(new WritableStream({}, {highWaterMark: 0}));
+  assert_true(r.bodyUsed, 'bodyUsed should be true');
+}, 'using pipeTo on Response body should disturb it synchronously');
+
+test(() => {
+  const r = new Response(new ReadableStream());
+  r.body.pipeThrough({
+    writable: new WritableStream({}, {highWaterMark: 0}),
+    readable: new ReadableStream()
+  });
+  assert_true(r.bodyUsed, 'bodyUsed should be true');
+}, 'using pipeThrough on Response body should disturb it synchronously');