1 files changed, 17 insertions, 0 deletions
diff --git a/dom/tests/mochitest/fetch/test_fetch_cached_redirect.js b/dom/tests/mochitest/fetch/test_fetch_cached_redirect.js
new file mode 100644
index 0000000000..48d9b2231f
--- /dev/null
+++ b/dom/tests/mochitest/fetch/test_fetch_cached_redirect.js
@@ -0,0 +1,17 @@
+async function testCachedRedirectErrorMode() {
+  // This is a file that returns a 302 to someplace else and will be cached.
+  const REDIRECTING_URL = "file_fetch_cached_redirect.html";
+
+  let firstResponse = await fetch(REDIRECTING_URL, { redirect: "manual" });
+  // okay, now it should be in the cahce.
+  try {
+    let secondResponse = await fetch(REDIRECTING_URL, { redirect: "error" });
+  } catch (ex) {}
+
+  ok(true, "didn't crash");
+}
+
+function runTest() {
+  return Promise.resolve().then(testCachedRedirectErrorMode);
+  // Put more promise based tests here.
+}