Handle undefined local-class (ember-cli#57)

* handle undefined local-class case * add test
luxzeitlos · Nov 30, 2016 · d39e474 · d39e474
1 parent a2cb278
commit d39e474
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diff --git a/addon/helpers/local-class.js b/addon/helpers/local-class.js
@@ -5,7 +5,7 @@ export function localClass(params, hash) {
   if (!hash.from) { return ''; }
 
   let styles = resolveSource(hash.from);
-  let classes = params[0].split(/\s+/);
+  let classes = (params[0] || '').split(/\s+/);
 
   return classes.map(style => styles[style]).filter(Boolean).join(' ');
 }

diff --git a/tests/unit/helpers/local-class-test.js b/tests/unit/helpers/local-class-test.js
@@ -48,6 +48,10 @@ test('with an empty source specified', function(assert) {
   assert.equal(localClass(['abc'], { from: null }), '');
 });
 
+test('with an undefined local class', function(assert) {
+  assert.equal(localClass([undefined], { from: null }), '');
+});
+
 export default { foo: '_foo_123', bar: '_bar_789' };
 
 test('with a string source specified', function(assert) {