1 files changed, 22 insertions, 0 deletions
diff --git a/testing/web-platform/tests/streams/piping/transform-streams.any.js b/testing/web-platform/tests/streams/piping/transform-streams.any.js
new file mode 100644
index 0000000000..caae9fbad8
--- /dev/null
+++ b/testing/web-platform/tests/streams/piping/transform-streams.any.js
@@ -0,0 +1,22 @@
+// META: global=window,worker
+'use strict';
+
+promise_test(() => {
+  const rs = new ReadableStream({
+    start(c) {
+      c.enqueue('a');
+      c.enqueue('b');
+      c.enqueue('c');
+      c.close();
+    }
+  });
+
+  const ts = new TransformStream();
+
+  const ws = new WritableStream();
+
+  return rs.pipeThrough(ts).pipeTo(ws).then(() => {
+    const writer = ws.getWriter();
+    return writer.closed;
+  });
+}, 'Piping through an identity transform stream should close the destination when the source closes');