1 files changed, 30 insertions, 0 deletions
diff --git a/dom/streams/test/xpcshell/response.js b/dom/streams/test/xpcshell/response.js
new file mode 100644
index 0000000000..ead1be527f
--- /dev/null
+++ b/dom/streams/test/xpcshell/response.js
@@ -0,0 +1,30 @@
+"use strict";
+
+add_task(async function (test) {
+  return new Response(new Blob([], { type: "text/plain" })).body.cancel();
+});
+
+add_task(function (test) {
+  var response = new Response(
+    new Blob(["This is data"], { type: "text/plain" })
+  );
+  var reader = response.body.getReader();
+  reader.read();
+  return reader.cancel();
+});
+
+add_task(function (test) {
+  var response = new Response(new Blob(["T"], { type: "text/plain" }));
+  var reader = response.body.getReader();
+
+  var closedPromise = reader.closed.then(function () {
+    return reader.cancel();
+  });
+  reader.read().then(function readMore({ done, value }) {
+    if (!done) {
+      return reader.read().then(readMore);
+    }
+    return undefined;
+  });
+  return closedPromise;
+});