requirements: calculate all requirements for an option

test/test_requires.py

@@ -88,6 +88,30 @@ def test_multiple_requires():
     c.ip_address_service
 
 
+def test_multiple_requires_cumulative():
+    a = StrOption('activate_service', '')
+    b = IPOption('ip_address_service', '',
+                 requires=[{'option': a, 'expected': 'yes', 'action': 'disabled'},
+                           {'option': a, 'expected': 'yes', 'action': 'hidden'}])
+    od = OptionDescription('service', '', [a, b])
+    c = Config(od)
+    c.read_write()
+    c.ip_address_service
+    c.activate_service = 'yes'
+    props = []
+    try:
+        c.ip_address_service
+    except PropertiesOptionError as err:
+        props = err.proptype
+    assert set(props) == set(['hidden', 'disabled'])
+
+    c.activate_service = 'ok'
+    c.ip_address_service
+
+    c.activate_service = 'no'
+    c.ip_address_service
+
+
 def test_multiple_requires_inverse():
     a = StrOption('activate_service', '')
     b = IPOption('ip_address_service', '',

tiramisu/option.py

@@ -1045,6 +1045,8 @@ def validate_requires_arg(requires, name):
     ret_requires = {}
     config_action = {}
 
+    # start parsing all requires given by user (has dict)
+    # transforme it to a tuple
     for require in requires:
         if not type(require) == dict:
             raise ValueError(_("malformed requirements type for option:"
@@ -1058,6 +1060,7 @@ def validate_requires_arg(requires, name):
                              '{2}'.format(name,
                                           unknown_keys,
                                           valid_keys))
+        # prepare all attributes
         try:
             option = require['option']
             expected = require['expected']
@@ -1106,12 +1109,12 @@ def validate_requires_arg(requires, name):
                                             inverse, transitive, same_action)
         else:
             ret_requires[action][option][1].append(expected)
+    # transform dict to tuple
     ret = []
     for opt_requires in ret_requires.values():
         ret_action = []
         for require in opt_requires.values():
-            req = (require[0], tuple(require[1]), require[2], require[3],
-                   require[4], require[5])
-            ret_action.append(req)
+            ret_action.append((require[0], tuple(require[1]), require[2],
+                               require[3], require[4], require[5]))
         ret.append(tuple(ret_action))
     return frozenset(config_action.keys()), tuple(ret)

tiramisu/setting.py

@@ -527,7 +527,7 @@ class Settings(object):
                     calc_properties.add(action)
                     # the calculation cannot be carried out
                     break
-            return calc_properties
+        return calc_properties
 
     def _get_opt_path(self, opt):
         return self.context().cfgimpl_get_description().impl_get_path_by_opt(opt)