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', '',