1 files changed, 13 insertions, 1 deletions
diff --git a/js/fetch_test.ts b/js/fetch_test.ts
index 873f2fbde..88cf834bc 100644
--- a/js/fetch_test.ts
+++ b/js/fetch_test.ts
@@ -1,5 +1,5 @@
 // Copyright 2018 the Deno authors. All rights reserved. MIT license.
-import { testPerm, assertEqual } from "./test_util.ts";
+import { test, testPerm, assert, assertEqual } from "./test_util.ts";
 import * as deno from "deno";
 
 testPerm({ net: true }, async function fetchJsonSuccess() {
@@ -7,3 +7,15 @@ testPerm({ net: true }, async function fetchJsonSuccess() {
   const json = await response.json();
   assertEqual(json.name, "deno");
 });
+
+test(async function fetchPerm() {
+  let err;
+  try {
+    await fetch("http://localhost:4545/package.json");
+  } catch (err_) {
+    err = err_;
+  }
+  // TODO assert(err instanceof deno.PermissionDenied).
+  assert(err);
+  assertEqual(err.name, "deno.PermissionDenied");
+});