Should execute 'resolve' before check the values of 'for_each'

Change-Id: I75f58885a91d11e52ed3737a806b5920774d586c
Closes-Bug: #1466748

heat/engine/hot/functions.py

@@ -301,7 +301,7 @@ class Repeat(function.Function):
                             self.fn_name)
 
         try:
-            for_each = self.args['for_each']
+            for_each = function.resolve(self.args['for_each'])
             template = self.args['template']
         except (KeyError, TypeError):
             example = ('''repeat:
@@ -335,9 +335,8 @@ class Repeat(function.Function):
                         for (k, v) in template.items())
 
     def result(self):
-        for_each = function.resolve(self._for_each)
-        keys = list(six.iterkeys(for_each))
-        lists = [for_each[key] for key in keys]
+        keys = list(six.iterkeys(self._for_each))
+        lists = [self._for_each[key] for key in keys]
         template = function.resolve(self._template)
         return [self._do_replacement(keys, items, template)
                 for items in itertools.product(*lists)]

heat/tests/test_hot.py

@@ -593,13 +593,21 @@ class HOTemplateTest(common.HeatTestCase):
 
     def test_repeat(self):
         """Test repeat function."""
-        snippet = {'repeat': {'template': 'this is %var%',
-                              'for_each': {'%var%': ['a', 'b', 'c']}}}
+        hot_tpl = template_format.parse('''
+        heat_template_version: 2015-04-30
+        parameters:
+          param:
+            type: comma_delimited_list
+            default: 'a,b,c'
+        ''')
+        snippet = {'repeat': {'template': 'this is var%',
+                   'for_each': {'var%': {'get_param': 'param'}}}}
         snippet_resolved = ['this is a', 'this is b', 'this is c']
 
-        tmpl = template.Template(hot_kilo_tpl_empty)
+        tmpl = template.Template(hot_tpl)
+        stack = parser.Stack(utils.dummy_context(), 'test_stack', tmpl)
 
-        self.assertEqual(snippet_resolved, self.resolve(snippet, tmpl))
+        self.assertEqual(snippet_resolved, self.resolve(snippet, tmpl, stack))
 
     def test_repeat_dict_template(self):
         """Test repeat function with a dictionary as a template."""