Don’t stop iteration on first :class

Fix for issue #11193

packages/ember-htmlbars/tests/integration/component_class_name_bindings_test.js

@@ -0,0 +1,42 @@
+import EmberView from "ember-views/views/view";
+import { Registry } from "ember-runtime/system/container";
+import compile from 'ember-template-compiler/system/compile';
+import { runAppend, runDestroy } from "ember-runtime/tests/utils";
+import ComponentLookup from 'ember-views/component_lookup';
+import Component from "ember-views/views/component";
+
+var registry, container, view;
+
+QUnit.module('ember-htmlbars: component classNameBindings', {
+  setup() {
+    registry = new Registry();
+    container = registry.container();
+    registry.optionsForType('component', { singleton: false });
+    registry.optionsForType('view', { singleton: false });
+    registry.optionsForType('template', { instantiate: false });
+    registry.optionsForType('helper', { instantiate: false });
+    registry.register('component-lookup:main', ComponentLookup);
+  },
+
+  teardown() {
+    runDestroy(container);
+    runDestroy(view);
+    registry = container = view = null;
+  }
+});
+
+QUnit.test('using many class namebindings', function() {
+  registry.register('component:x-foo', Component.extend({
+    elementId: 'component',
+    classNameBindings: [':class-one', ':class-two']
+  }));
+
+  view = EmberView.create({
+    container: container,
+    template: compile('{{x-foo}}')
+  });
+
+  runAppend(view);
+  let classes = view.$('#component').attr('class');
+  equal(classes, 'ember-view class-one class-two');
+});

packages/ember-views/lib/system/build-component-template.js

@@ -238,7 +238,7 @@ function normalizeClasses(classes, output) {
     // Legacy :class microsyntax for static class names
     if (propName === '') {
       output.push(activeClass);
-      return;
+      continue;
     }
 
     // 2.0TODO: Remove deprecated global path