1 files changed, 71 insertions, 0 deletions
diff --git a/fs/ensure_dir_test.ts b/fs/ensure_dir_test.ts
new file mode 100644
index 000000000..abf34221f
--- /dev/null
+++ b/fs/ensure_dir_test.ts
@@ -0,0 +1,71 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { test } from "../testing/mod.ts";
+import { assertThrows, assertThrowsAsync } from "../testing/asserts.ts";
+import { ensureDir, ensureDirSync } from "./ensure_dir.ts";
+import * as path from "./path/mod.ts";
+
+const testdataDir = path.resolve("fs", "testdata");
+
+test(async function ensureDirIfItNotExist() {
+  const baseDir = path.join(testdataDir, "ensure_dir_not_exist");
+  const testDir = path.join(baseDir, "test");
+
+  await ensureDir(testDir);
+
+  assertThrowsAsync(async () => {
+    await Deno.stat(testDir).then(() => {
+      throw new Error("test dir should exists.");
+    });
+  });
+
+  await Deno.remove(baseDir, { recursive: true });
+});
+
+test(function ensureDirSyncIfItNotExist() {
+  const baseDir = path.join(testdataDir, "ensure_dir_sync_not_exist");
+  const testDir = path.join(baseDir, "test");
+
+  ensureDirSync(testDir);
+
+  assertThrows(() => {
+    Deno.statSync(testDir);
+    throw new Error("test dir should exists.");
+  });
+
+  Deno.removeSync(baseDir, { recursive: true });
+});
+
+test(async function ensureDirIfItExist() {
+  const baseDir = path.join(testdataDir, "ensure_dir_exist");
+  const testDir = path.join(baseDir, "test");
+
+  // create test directory
+  await Deno.mkdir(testDir, true);
+
+  await ensureDir(testDir);
+
+  assertThrowsAsync(async () => {
+    await Deno.stat(testDir).then(() => {
+      throw new Error("test dir should still exists.");
+    });
+  });
+
+  await Deno.remove(baseDir, { recursive: true });
+});
+
+test(function ensureDirSyncIfItExist() {
+  const baseDir = path.join(testdataDir, "ensure_dir_sync_exist");
+  const testDir = path.join(baseDir, "test");
+
+  // create test directory
+  Deno.mkdirSync(testDir, true);
+
+  ensureDirSync(testDir);
+
+  assertThrows(() => {
+    Deno.statSync(testDir);
+    throw new Error("test dir should still exists.");
+  });
+
+  Deno.removeSync(baseDir, { recursive: true });
+});