fix: handle malformed control buffers (#3202)

1 files changed, 19 insertions, 1 deletions

diff --git a/cli/js/dispatch_json_test.ts b/cli/js/dispatch_json_test.ts
index 11dadc620..07549d295 100644
--- a/cli/js/dispatch_json_test.ts
+++ b/cli/js/dispatch_json_test.ts
@@ -1,4 +1,11 @@
-import { testPerm, assertMatch, unreachable } from "./test_util.ts";
+import {
+  test,
+  testPerm,
+  assert,
+  assertEquals,
+  assertMatch,
+  unreachable
+} from "./test_util.ts";
 
 const openErrorStackPattern = new RegExp(
   `^.*
@@ -17,3 +24,14 @@ testPerm({ read: true }, async function sendAsyncStackTrace(): Promise<void> {
       }
     );
 });
+
+test(async function malformedJsonControlBuffer(): Promise<void> {
+  // @ts-ignore
+  const res = Deno.core.send(10, new Uint8Array([1, 2, 3, 4, 5]));
+  const resText = new TextDecoder().decode(res);
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  const resJson = JSON.parse(resText) as any;
+  assert(!resJson.ok);
+  assert(resJson.err);
+  assertEquals(resJson.err!.kind, Deno.ErrorKind.InvalidInput);
+});