1 files changed, 60 insertions, 0 deletions
diff --git a/js/read_dir_test.ts b/js/read_dir_test.ts
new file mode 100644
index 000000000..43430ed00
--- /dev/null
+++ b/js/read_dir_test.ts
@@ -0,0 +1,60 @@
+// Copyright 2018 the Deno authors. All rights reserved. MIT license.
+import { test, testPerm, assert, assertEqual } from "./test_util.ts";
+import * as deno from "deno";
+import { FileInfo } from "deno";
+
+function assertSameContent(files: FileInfo[]) {
+  let counter = 0;
+
+  for (const file of files) {
+    if (file.name == "subdir") {
+      assert(file.isDirectory());
+      counter++;
+    }
+
+    if (file.name === "002_hello.ts") {
+      assertEqual(file.path, `tests/${file.name}`);
+      counter++;
+    }
+  }
+
+  assertEqual(counter, 2);
+}
+
+testPerm({ write: true }, function readDirSyncSuccess() {
+  const files = deno.readDirSync("tests/");
+  assertSameContent(files);
+});
+
+test(function readDirSyncNotDir() {
+  let caughtError = false;
+  let src;
+
+  try {
+    src = deno.readDirSync("package.json");
+  } catch (err) {
+    caughtError = true;
+    assertEqual(err.kind, deno.ErrorKind.Other);
+  }
+  assert(caughtError);
+  assertEqual(src, undefined);
+});
+
+test(function readDirSyncNotFound() {
+  let caughtError = false;
+  let src;
+
+  try {
+    src = deno.readDirSync("bad_dir_name");
+  } catch (err) {
+    caughtError = true;
+    assertEqual(err.kind, deno.ErrorKind.NotFound);
+  }
+  assert(caughtError);
+  assertEqual(src, undefined);
+});
+
+testPerm({ write: true }, async function readDirSuccess() {
+  const files = await deno.readDir("tests/");
+  assertSameContent(files);
+});