fix(ext/fetch) Fix request clone error in flash server (#16174)

1 files changed, 39 insertions, 0 deletions

diff --git a/cli/tests/unit/flash_test.ts b/cli/tests/unit/flash_test.ts
index 5604f6b5f..706b9f72b 100644
--- a/cli/tests/unit/flash_test.ts
+++ b/cli/tests/unit/flash_test.ts
@@ -2328,6 +2328,45 @@ Deno.test(
   },
 );
 
+// https://github.com/denoland/deno/issues/15858
+Deno.test(
+  { permissions: { net: true } },
+  async function httpServerCanCloneRequest() {
+    const ac = new AbortController();
+    const listeningPromise = deferred();
+
+    const server = Deno.serve({
+      handler: async (req) => {
+        const cloned = req.clone();
+        assertEquals(req.headers, cloned.headers);
+
+        // both requests can read body
+        await req.text();
+        await cloned.json();
+
+        return new Response("ok");
+      },
+      signal: ac.signal,
+      onListen: onListen(listeningPromise),
+      onError: createOnErrorCb(ac),
+    });
+
+    try {
+      await listeningPromise;
+      const resp = await fetch("http://localhost:9000/", {
+        headers: { connection: "close" },
+        method: "POST",
+        body: '{"sus":true}',
+      });
+      const text = await resp.text();
+      assertEquals(text, "ok");
+    } finally {
+      ac.abort();
+      await server;
+    }
+  },
+);
+
 // Checks large streaming response
 // https://github.com/denoland/deno/issues/16567
 Deno.test(