1 files changed, 41 insertions, 0 deletions
diff --git a/std/flags/num_test.ts b/std/flags/num_test.ts
new file mode 100755
index 000000000..1123f7ecc
--- /dev/null
+++ b/std/flags/num_test.ts
@@ -0,0 +1,41 @@
+// 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 nums(): void {
+  const argv = parse([
+    "-x",
+    "1234",
+    "-y",
+    "5.67",
+    "-z",
+    "1e7",
+    "-w",
+    "10f",
+    "--hex",
+    "0xdeadbeef",
+    "789"
+  ]);
+  assertEquals(argv, {
+    x: 1234,
+    y: 5.67,
+    z: 1e7,
+    w: "10f",
+    hex: 0xdeadbeef,
+    _: [789]
+  });
+  assertEquals(typeof argv.x, "number");
+  assertEquals(typeof argv.y, "number");
+  assertEquals(typeof argv.z, "number");
+  assertEquals(typeof argv.w, "string");
+  assertEquals(typeof argv.hex, "number");
+  assertEquals(typeof argv._[0], "number");
+});
+
+test(function alreadyNumber(): void {
+  const argv = parse(["-x", 1234, 789]);
+  assertEquals(argv, { x: 1234, _: [789] });
+  assertEquals(typeof argv.x, "number");
+  assertEquals(typeof argv._[0], "number");
+});