1 files changed, 46 insertions, 0 deletions
diff --git a/cli/tests/unit/flash_test.ts b/cli/tests/unit/flash_test.ts
index 9491e4534..5604f6b5f 100644
--- a/cli/tests/unit/flash_test.ts
+++ b/cli/tests/unit/flash_test.ts
@@ -12,6 +12,7 @@ import {
   assert,
   assertEquals,
   assertRejects,
+  assertStringIncludes,
   assertThrows,
   Deferred,
   deferred,
@@ -495,6 +496,51 @@ Deno.test(
   },
 );
 
+// https://github.com/denoland/deno/issues/17291
+Deno.test(
+  { permissions: { net: true } },
+  async function httpServerIncorrectChunkedResponse() {
+    const ac = new AbortController();
+    const listeningPromise = deferred();
+    const errorPromise = deferred();
+    const server = Deno.serve({
+      handler: () => {
+        const body = new ReadableStream({
+          start(controller) {
+            // Non-encoded string is not a valid readable chunk.
+            controller.enqueue("wat");
+          },
+        });
+        return new Response(body);
+      },
+      port: 4501,
+      signal: ac.signal,
+      onListen: onListen(listeningPromise),
+      onError: (err) => {
+        const errResp = new Response(
+          `Internal server error: ${(err as Error).message}`,
+          { status: 500 },
+        );
+        ac.abort();
+        errorPromise.resolve(errResp);
+        return errResp;
+      },
+    });
+
+    await listeningPromise;
+
+    const resp = await fetch("http://127.0.0.1:4501/");
+    // Incorrectly implemented reader ReadableStream should reject.
+    await assertRejects(() => resp.body!.getReader().read());
+
+    const err = await errorPromise as Response;
+    assertStringIncludes(await err.text(), "Expected ArrayBufferView");
+
+    ac.abort();
+    await server;
+  },
+);
+
 Deno.test(
   { permissions: { net: true } },
   async function httpServerCorrectLengthForUnicodeString() {