1 files changed, 43 insertions, 0 deletions
diff --git a/js/resources_test.ts b/js/resources_test.ts
new file mode 100644
index 000000000..3b34d7395
--- /dev/null
+++ b/js/resources_test.ts
@@ -0,0 +1,43 @@
+// Copyright 2018 the Deno authors. All rights reserved. MIT license.
+import { test, testPerm, assert, assertEqual } from "./test_util.ts";
+import * as deno from "deno";
+
+test(function resourcesStdio() {
+  const res = deno.resources();
+
+  assertEqual(res[0], "stdin");
+  assertEqual(res[1], "stdout");
+  assertEqual(res[2], "stderr");
+});
+
+testPerm({ net: true }, async function resourcesNet() {
+  const addr = "127.0.0.1:4501";
+  const listener = deno.listen("tcp", addr);
+
+  const dialerConn = await deno.dial("tcp", addr);
+  const listenerConn = await listener.accept();
+
+  const res = deno.resources();
+  assertEqual(Object.values(res).filter(r => r === "tcpListener").length, 1);
+  assertEqual(Object.values(res).filter(r => r === "tcpStream").length, 2);
+
+  listenerConn.close();
+  dialerConn.close();
+  listener.close();
+});
+
+test(async function resourcesFile() {
+  const resourcesBefore = deno.resources();
+  await deno.open("tests/hello.txt");
+  const resourcesAfter = deno.resources();
+
+  // check that exactly one new resource (file) was added
+  assertEqual(
+    Object.keys(resourcesAfter).length,
+    Object.keys(resourcesBefore).length + 1
+  );
+  const newRid = Object.keys(resourcesAfter).find(rid => {
+    return !resourcesBefore.hasOwnProperty(rid);
+  });
+  assertEqual(resourcesAfter[newRid], "fsFile");
+});