Jedi didn't care for decorator 'dotted_name' nodes and therefore descriptor tests failed.

jedi/evaluate/__init__.py

@@ -192,6 +192,12 @@ class Evaluator(object):
             # `x if foo else y` case.
             return (self.eval_element(element.children[0]) +
                     self.eval_element(element.children[-1]))
+        elif pr.is_node(element, 'dotted_name'):
+            types = self._eval_atom(element.children[0])
+            for next_name in element.children[2::2]:
+                types = list(chain.from_iterable(self.find_types(typ, next_name)
+                                                 for typ in types))
+            return types
         else:
             return precedence.calculate_children(self, element.children)
 

jedi/evaluate/finder.py

@@ -293,7 +293,6 @@ class NameFinder(object):
 
         for name in names:
             typ = name.get_definition()
-            print(name, typ)
             if typ.isinstance(pr.ForStmt):
                 for_types = self._evaluator.eval_element(typ.children[-3])
                 for_types = iterable.get_iterator_types(for_types)

jedi/evaluate/representation.py

@@ -101,6 +101,7 @@ class Instance(use_metaclass(CachedMetaClass, Executed)):
         # Generated instances are classes that are just generated by self
         # (No var_args) used.
         self.is_generated = is_generated
+        self.decorates = None
 
     @property
     def py__call__(self):
@@ -228,7 +229,11 @@ class Instance(use_metaclass(CachedMetaClass, Executed)):
         return getattr(self.base, name)
 
     def __repr__(self):
-        return "<e%s of %s %s>" % (type(self).__name__, self.base, self.var_args)
+        dec = ''
+        if self.decorates is not None:
+            dec = " decorates " + repr(self.decorates)
+        return "<e%s of %s(%s)%s>" % (type(self).__name__, self.base,
+                                     self.var_args.argument_node, dec)
 
 
 def get_instance_el(evaluator, instance, var, is_class_var=False):
@@ -356,7 +361,6 @@ class Class(use_metaclass(CachedMetaClass, Wrapper)):
     def __init__(self, evaluator, base):
         self._evaluator = evaluator
         self.base = base
-        self.decorates = None
 
     @memoize_default(default=())
     def py__mro__(self, evaluator):
@@ -498,7 +502,7 @@ class Function(use_metaclass(CachedMetaClass, Wrapper)):
                     debug.warning('multiple wrappers found %s %s',
                                   self.base_func, wrappers)
                 f = wrappers[0]
-                if isinstance(f, (Class, Function)):
+                if isinstance(f, (Instance, Function)):
                     f.decorates = self
 
                 debug.dbg('decorator end %s', f)