Import priorities are wrong (__dict__ > files). Test for #536.

test/completion/import_tree/__init__.py

@@ -1 +1,7 @@
 a = ''
+
+from . import invisible_pkg
+
+the_pkg = invisible_pkg
+
+invisible_pkg = 1

test/completion/imports.py

@@ -110,6 +110,23 @@ def as_imports():
     #? int()
     bar.a
 
+
+def test_import_priorities():
+    """
+    It's possible to overwrite import paths in an ``__init__.py`` file, by
+    just assigining something there.
+
+    See also #536.
+    """
+    from import_tree import the_pkg, invisible_pkg
+    # TODO currently not enabled, later we should actually fix this.
+    ##? int()
+    invisible_pkg
+    # The renamed invisible_pkg in that module (look at ``__init__.py``!)
+    #? float()
+    the_pkg.foo
+
+
 # -----------------
 # std lib modules
 # -----------------

test/completion/on_import.py

@@ -65,7 +65,7 @@ import datetime.date
 from import_tree.pkg import pkg
 #? 22 ['mod1']
 from import_tree.pkg. import mod1
-#? 17 ['mod1', 'mod2', 'random', 'pkg', 'rename1', 'rename2', 'recurse_class1', 'recurse_class2']
+#? 17 ['mod1', 'mod2', 'random', 'pkg', 'rename1', 'rename2', 'recurse_class1', 'recurse_class2', 'invisible_pkg']
 from import_tree. import pkg
 
 #? 18 ['pkg']