Add flags module (denoland/deno_std#32)

Original: https://github.com/denoland/deno_std/commit/b15b0d20d722ad16ebba363c0e8e35bbbc869f20

1 files changed, 28 insertions, 0 deletions

diff --git a/flags/tests/dash.ts b/flags/tests/dash.ts
new file mode 100755
index 000000000..87b3ab480
--- /dev/null
+++ b/flags/tests/dash.ts
@@ -0,0 +1,28 @@
+import { test, assertEqual } from "https://deno.land/x/testing/testing.ts";
+import parseArgs from "../index.ts";
+
+test(function hyphen() {
+    assertEqual(parseArgs([ '-n', '-' ]), { n: '-', _: [] });
+    assertEqual(parseArgs([ '-' ]), { _: [ '-' ] });
+    assertEqual(parseArgs([ '-f-' ]), { f: '-', _: [] });
+    assertEqual(
+        parseArgs([ '-b', '-' ], { boolean: 'b' }),
+        { b: true, _: [ '-' ] }
+    );
+    assertEqual(
+        parseArgs([ '-s', '-' ], { string: 's' }),
+        { s: '-', _: [] }
+    );
+});
+
+test(function doubleDash() {
+    assertEqual(parseArgs([ '-a', '--', 'b' ]), { a: true, _: [ 'b' ] });
+    assertEqual(parseArgs([ '--a', '--', 'b' ]), { a: true, _: [ 'b' ] });
+    assertEqual(parseArgs([ '--a', '--', 'b' ]), { a: true, _: [ 'b' ] });
+});
+
+test(function moveArgsAfterDoubleDashIntoOwnArray() {
+    assertEqual(
+        parseArgs([ '--name', 'John', 'before', '--', 'after' ], { '--': true }),
+        { name: 'John', _: [ 'before' ], '--': [ 'after' ] });
+});