add fs/exists (denoland/deno_std#260)

Original: https://github.com/denoland/deno_std/commit/142a1c6cf890e5c7626c4c934496fae1eee01715

1 files changed, 36 insertions, 0 deletions

diff --git a/fs/exists_test.ts b/fs/exists_test.ts
new file mode 100644
index 000000000..3d781108e
--- /dev/null
+++ b/fs/exists_test.ts
@@ -0,0 +1,36 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { test } from "../testing/mod.ts";
+import { assertEquals } from "../testing/asserts.ts";
+import { exists, existsSync } from "./exists.ts";
+import * as path from "./path/mod.ts";
+
+const testdataDir = path.resolve("fs", "testdata");
+
+test(async function existsFile() {
+  assertEquals(
+    await exists(path.join(testdataDir, "not_exist_file.ts")),
+    false
+  );
+  assertEquals(await existsSync(path.join(testdataDir, "0.ts")), true);
+});
+
+test(function existsFileSync() {
+  assertEquals(existsSync(path.join(testdataDir, "not_exist_file.ts")), false);
+  assertEquals(existsSync(path.join(testdataDir, "0.ts")), true);
+});
+
+test(async function existsDirectory() {
+  assertEquals(
+    await exists(path.join(testdataDir, "not_exist_directory")),
+    false
+  );
+  assertEquals(existsSync(testdataDir), true);
+});
+
+test(function existsDirectorySync() {
+  assertEquals(
+    existsSync(path.join(testdataDir, "not_exist_directory")),
+    false
+  );
+  assertEquals(existsSync(testdataDir), true);
+});