Fail when using same command and alias

tj · Jan 25, 2016 · 1932f4b · 1932f4b
1 parent 1452f6f
commit 1932f4b
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Showing 2 changed files with 17 additions and 0 deletions.
diff --git a/index.js b/index.js
@@ -851,6 +851,9 @@ Command.prototype.description = function(str) {
 
 Command.prototype.alias = function(alias) {
   if (0 == arguments.length) return this._alias;
+  if (alias === this._name) {
+    throw new Error('Command alias can\'t be the same as its name');
+  }
   this._alias = alias;
   return this;
 };

diff --git a/test/test.command.failOnSameAlias.js b/test/test.command.failOnSameAlias.js
@@ -0,0 +1,14 @@
+var program = require('../')
+  , should = require('should');
+
+var error;
+
+try {
+  program
+    .command('fail')
+    .alias('fail');
+} catch (e) {
+  error = e;
+}
+
+error.should.deepEqual(new Error('Command alias can\'t be the same as its name'));