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-rw-r--r--heat/engine/hot/functions.py14
-rw-r--r--heat/tests/test_hot.py2
2 files changed, 9 insertions, 7 deletions
diff --git a/heat/engine/hot/functions.py b/heat/engine/hot/functions.py
index cf4eaa0f5..2575264c9 100644
--- a/heat/engine/hot/functions.py
+++ b/heat/engine/hot/functions.py
@@ -1603,12 +1603,14 @@ class ListConcat(function.Function):
for m in args:
ret_list.extend(ensure_list(m))
- if self._unique:
- for i in ret_list:
- while ret_list.count(i) > 1:
- del ret_list[ret_list.index(i)]
-
- return ret_list
+ if not self._unique:
+ return ret_list
+
+ unique_list = []
+ for item in ret_list:
+ if item not in unique_list:
+ unique_list.append(item)
+ return unique_list
class ListConcatUnique(ListConcat):
diff --git a/heat/tests/test_hot.py b/heat/tests/test_hot.py
index 753123921..702ca1a1f 100644
--- a/heat/tests/test_hot.py
+++ b/heat/tests/test_hot.py
@@ -2367,7 +2367,7 @@ resources:
self.assertEqual(snippet_resolved, resolved)
def test_list_concat_unique(self):
- snippet = {'list_concat_unique': [['v1', 'v2'], ['v2', 'v3']]}
+ snippet = {'list_concat_unique': [['v1', 'v2'], ['v1', 'v3']]}
snippet_resolved = ['v1', 'v2', 'v3']
tmpl = template.Template(hot_pike_tpl_empty)
resolved = self.resolve(snippet, tmpl)