From 5881bbd9985f477c4e0430db894c2346d3fbdce2 Mon Sep 17 00:00:00 2001
From: ybiquitous <ybiquitous@gmail.com>
Date: Wed, 15 Nov 2017 14:45:42 +0900
Subject: [PATCH] fix: show help when unknown command is given (#52)

Related to <https://github.com/yargs/yargs/issues/287>.
---
 src/cli.js        |  1 +
 test/help.test.js | 20 +++++++++++++-------
 2 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/src/cli.js b/src/cli.js
index d3a7ced3..1ce6a7d1 100644
--- a/src/cli.js
+++ b/src/cli.js
@@ -12,6 +12,7 @@ module.exports = function cli() {
     .usage('$0 <command>')
     .command('init', init.desc, {}, init)
     .demandCommand(1)
+    .strict()
     .alias('help', 'h')
     .alias('version', 'v')
     .argv
diff --git a/test/help.test.js b/test/help.test.js
index b79d4894..93c6bb7a 100644
--- a/test/help.test.js
+++ b/test/help.test.js
@@ -17,13 +17,19 @@ Options:
 `.trim()
 
 suite('help', () => {
-  test('without any arguments', async () => {
-    const error = await assertThrows(() => exec())
-    const { code, stdout, stderr } = error
-    assert(error instanceof Error)
-    assert(code === 1)
-    assert(stdout === '')
-    assert(stderr.includes(HELP), stderr)
+  [
+    [],
+    ['unknown'],
+    ['unknown', 'xyz'],
+  ].forEach((args) => {
+    test(`with arguments [${args.join(', ')}]`, async () => {
+      const error = await assertThrows(() => exec(...args))
+      const { code, stdout, stderr } = error
+      assert(error instanceof Error)
+      assert(code === 1)
+      assert(stdout === '')
+      assert(stderr.includes(HELP), stderr)
+    })
   });
 
   ['--help', '-h'].forEach((option) => {