1 files changed, 29 insertions, 0 deletions
diff --git a/std/flags/dash_test.ts b/std/flags/dash_test.ts
new file mode 100755
index 000000000..f4901b352
--- /dev/null
+++ b/std/flags/dash_test.ts
@@ -0,0 +1,29 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { test } from "../testing/mod.ts";
+import { assertEquals } from "../testing/asserts.ts";
+import { parse } from "./mod.ts";
+
+test(function hyphen(): void {
+  assertEquals(parse(["-n", "-"]), { n: "-", _: [] });
+  assertEquals(parse(["-"]), { _: ["-"] });
+  assertEquals(parse(["-f-"]), { f: "-", _: [] });
+  assertEquals(parse(["-b", "-"], { boolean: "b" }), { b: true, _: ["-"] });
+  assertEquals(parse(["-s", "-"], { string: "s" }), { s: "-", _: [] });
+});
+
+test(function doubleDash(): void {
+  assertEquals(parse(["-a", "--", "b"]), { a: true, _: ["b"] });
+  assertEquals(parse(["--a", "--", "b"]), { a: true, _: ["b"] });
+  assertEquals(parse(["--a", "--", "b"]), { a: true, _: ["b"] });
+});
+
+test(function moveArgsAfterDoubleDashIntoOwnArray(): void {
+  assertEquals(
+    parse(["--name", "John", "before", "--", "after"], { "--": true }),
+    {
+      name: "John",
+      _: ["before"],
+      "--": ["after"]
+    }
+  );
+});