changed type compare to instanceof and added test

Author: Brian Hall

shared/helpers/view.js

@@ -68,7 +68,7 @@ function getClientPlaceholder(viewName, viewOptions, Handlebars) {
   // create a list of data attributes
   var attrString = _.inject(viewOptions, function(memo, value, key) {
     if (_.isArray(value) || _.isObject(value)) {
-      if (key === '_block' && value.contructor === Handlebars.SafeString) {
+      if (key === '_block' && value instanceof Handlebars.SafeString) {
         value = value.string;
       } else {
         value = JSON.stringify(value);

test/shared/helpers/view.test.js

@@ -175,6 +175,22 @@ describe('view', function () {
           '<div data-render="true" data-generic_object="{&quot;a&quot;:1,&quot;b&quot;:2,&quot;c&quot;:3}" data-fetch_summary="{}" data-view="test"></div>'
         );
       });
+
+      context('when the key is _block and is of type Handlebars.SafeString', function () {
+        it('extracts the string correctly', function () {
+          var html = '<div>something</div>',
+            result = subject.call({
+            _app: app()
+          }, 'test', {
+            hash: {
+              _block: new Handlebars.SafeString(html)
+            }
+          });
+          expect(result.string).to.eq(
+            '<div data-render="true" data-_block="&lt;div&gt;something&lt;/div&gt;" data-fetch_summary="{}" data-view="test"></div>'
+          );
+        });
+      });
     });
   });
 });