1 files changed, 76 insertions, 0 deletions
diff --git a/cli/tests/unit/dispatch_bin_test.ts b/cli/tests/unit/dispatch_bin_test.ts
new file mode 100644
index 000000000..b2d96f3b3
--- /dev/null
+++ b/cli/tests/unit/dispatch_bin_test.ts
@@ -0,0 +1,76 @@
+import {
+  assert,
+  assertEquals,
+  assertMatch,
+  unitTest,
+  unreachable,
+} from "./test_util.ts";
+
+const readErrorStackPattern = new RegExp(
+  `^.*
+    at handleError \\(.*core\\.js:.*\\)
+    at binOpParseResult \\(.*core\\.js:.*\\)
+    at asyncHandle \\(.*core\\.js:.*\\).*$`,
+  "ms",
+);
+
+unitTest(async function sendAsyncStackTrace(): Promise<void> {
+  const buf = new Uint8Array(10);
+  const rid = 10;
+  try {
+    await Deno.read(rid, buf);
+    unreachable();
+  } catch (error) {
+    assertMatch(error.stack, readErrorStackPattern);
+  }
+});
+
+declare global {
+  // deno-lint-ignore no-namespace
+  namespace Deno {
+    // deno-lint-ignore no-explicit-any
+    var core: any; // eslint-disable-line no-var
+  }
+}
+
+unitTest(function binOpsHeaderTooShort(): void {
+  for (const op of ["op_read_sync", "op_read_async"]) {
+    const readOpId = Deno.core.ops()[op];
+    const res = Deno.core.send(
+      readOpId,
+      new Uint8Array([
+        1,
+        2,
+        3,
+        4,
+        5,
+        6,
+        7,
+        8,
+        9,
+        10,
+        11,
+      ]),
+    );
+
+    const headerByteLength = 4 * 4;
+    assert(res.byteLength > headerByteLength);
+    const view = new DataView(
+      res.buffer,
+      res.byteOffset + res.byteLength - headerByteLength,
+      headerByteLength,
+    );
+
+    const requestId = Number(view.getBigUint64(0, true));
+    const status = view.getUint32(8, true);
+    const result = view.getUint32(12, true);
+
+    assert(requestId === 0);
+    assert(status !== 0);
+    assertEquals(new TextDecoder().decode(res.slice(0, result)), "TypeError");
+    assertEquals(
+      new TextDecoder().decode(res.slice(result, -headerByteLength)).trim(),
+      "Unparsable control buffer",
+    );
+  }
+});