Support condition for output

Provides output condition for cfn/hot templates,
if the condition of output evaluates to false, will
set output value to None.

Change-Id: I0398e39541a4176ef5699331c10536c59f1cb3e7
Blueprint: support-conditions-function

1 files changed, 27 insertions, 0 deletions

diff --git a/heat/tests/test_template.py b/heat/tests/test_template.py
index 9f61523b9..d6f12b680 100644
--- a/heat/tests/test_template.py
+++ b/heat/tests/test_template.py
@@ -299,6 +299,12 @@ class TestTemplateConditionParser(common.HeatTestCase):
                     'type': 'GenericResourceType',
                     'condition': 'prod_env'
                 }
+            },
+            'outputs': {
+                'foo': {
+                    'condition': 'prod_env',
+                    'value': {'get_attr': ['r1', 'foo']}
+                }
             }
         }
 
@@ -381,6 +387,27 @@ class TestTemplateConditionParser(common.HeatTestCase):
         self.assertIn('Invalid condition "111" (in r1.condition)',
                       six.text_type(ex))
 
+    def test_parse_output_condition_invalid(self):
+        stk = stack.Stack(self.ctx,
+                          'test_output_invalid_condition',
+                          self.tmpl)
+
+        # test condition name is invalid
+        stk.outputs['foo']['condition'] = 'invalid_cd'
+        ex = self.assertRaises(exception.InvalidConditionReference,
+                               self.tmpl.parse_outputs_conditions,
+                               stk.outputs, stk)
+        self.assertIn('Invalid condition "invalid_cd" '
+                      '(in outputs.foo.condition)',
+                      six.text_type(ex))
+        # test condition name is not string
+        stk.outputs['foo']['condition'] = 222
+        ex = self.assertRaises(exception.InvalidConditionReference,
+                               self.tmpl.parse_outputs_conditions,
+                               stk.outputs, stk)
+        self.assertIn('Invalid condition "222" (in outputs.foo.condition)',
+                      six.text_type(ex))
+
 
 class TestTemplateValidate(common.HeatTestCase):