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: #7422 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Brian White <[email protected]> Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]>
nodejs · Jul 14, 2016 · e3097b7 · e3097b7
1 parent f0b0fc4
commit e3097b7
Showing 1 changed file with 5 additions and 0 deletions.
diff --git 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);