1 files changed, 29 insertions, 4 deletions
diff --git a/js/mkdir_test.ts b/js/mkdir_test.ts
index ea6028c9e..963f73806 100644
--- a/js/mkdir_test.ts
+++ b/js/mkdir_test.ts
@@ -3,15 +3,15 @@ import { testPerm, assert, assertEqual } from "./test_util.ts";
 import * as deno from "deno";
 
 testPerm({ write: true }, function mkdirSyncSuccess() {
-  const path = deno.makeTempDirSync() + "/dir/subdir";
+  const path = deno.makeTempDirSync() + "/dir";
   deno.mkdirSync(path);
   const pathInfo = deno.statSync(path);
   assert(pathInfo.isDirectory());
 });
 
 testPerm({ write: true }, function mkdirSyncMode() {
-  const path = deno.makeTempDirSync() + "/dir/subdir";
-  deno.mkdirSync(path, 0o755); // no perm for x
+  const path = deno.makeTempDirSync() + "/dir";
+  deno.mkdirSync(path, false, 0o755); // no perm for x
   const pathInfo = deno.statSync(path);
   if (pathInfo.mode !== null) {
     // Skip windows
@@ -31,8 +31,33 @@ testPerm({ write: false }, function mkdirSyncPerm() {
 });
 
 testPerm({ write: true }, async function mkdirSuccess() {
-  const path = deno.makeTempDirSync() + "/dir/subdir";
+  const path = deno.makeTempDirSync() + "/dir";
   await deno.mkdir(path);
   const pathInfo = deno.statSync(path);
   assert(pathInfo.isDirectory());
 });
+
+testPerm({ write: true }, function mkdirErrIfExists() {
+  let err;
+  try {
+    deno.mkdirSync(".");
+  } catch (e) {
+    err = e;
+  }
+  assertEqual(err.kind, deno.ErrorKind.AlreadyExists);
+  assertEqual(err.name, "AlreadyExists");
+});
+
+testPerm({ write: true }, function mkdirSyncRecursive() {
+  const path = deno.makeTempDirSync() + "/nested/directory";
+  deno.mkdirSync(path, true);
+  const pathInfo = deno.statSync(path);
+  assert(pathInfo.isDirectory());
+});
+
+testPerm({ write: true }, async function mkdirRecursive() {
+  const path = deno.makeTempDirSync() + "/nested/directory";
+  await deno.mkdir(path, true);
+  const pathInfo = deno.statSync(path);
+  assert(pathInfo.isDirectory());
+});