From e3097b7cdf1096db65eaf2607bf6e0c04a60f202 Mon Sep 17 00:00:00 2001
From: Rich Trott <rtrott@gmail.com>
Date: Sat, 25 Jun 2016 15:18:04 -0700
Subject: [PATCH] test: test isFullWidthCodePoint with invalid input

Code coverage information shows that we are only testing the happy path
for the internal readline `isFullWidthCodePoint()` function. Test it
with invalid input.

PR-URL: https://github.com/nodejs/node/pull/7422
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: James M Snell <jasnell@gmail.com>
---
 test/parallel/test-readline-interface.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test/parallel/test-readline-interface.js b/test/parallel/test-readline-interface.js
index 4997b6e9bdb60b..8c7a4d12d100ce 100644
--- a/test/parallel/test-readline-interface.js
+++ b/test/parallel/test-readline-interface.js
@@ -304,6 +304,11 @@ function isWarned(emitter) {
     rli.close();
   }
 
+  // isFullWidthCodePoint() should return false for non-numeric values
+  [true, false, null, undefined, {}, [], 'あ'].forEach((v) => {
+    assert.strictEqual(readline.isFullWidthCodePoint('あ'), false);
+  });
+
   // wide characters should be treated as two columns.
   assert.equal(readline.isFullWidthCodePoint('a'.charCodeAt(0)), false);
   assert.equal(readline.isFullWidthCodePoint('あ'.charCodeAt(0)), true);