TEST: Connect JoinNode to input with overlapping name

Author: effigies

nipype/pipeline/engine/tests/test_join.py

@@ -7,11 +7,9 @@
                         absolute_import)
 from builtins import open
 
-import os
-
 from ... import engine as pe
 from ....interfaces import base as nib
-from ....interfaces.utility import IdentityInterface
+from ....interfaces.utility import IdentityInterface, Function, Merge
 from ....interfaces.base import traits, File
 
 
@@ -612,3 +610,20 @@ def nested_wf(i, name='smallwf'):
     # there should be six nodes in total
     assert len(result.nodes()) == 6, \
         "The number of expanded nodes is incorrect."
+
+
+def test_name_prefix_join(tmpdir):
+    tmpdir.chdir()
+
+    def sq(x):
+        return x ** 2
+
+    wf = pe.Workflow('wf', base_dir=tmpdir.strpath)
+    square = pe.Node(Function(function=sq), name='square')
+    square.iterables = [('x', [1, 2])]
+    square_join = pe.JoinNode(Merge(1, ravel_inputs=True),
+                              name='square_join',
+                              joinsource=square,
+                              joinfield=['in1'])
+    wf.connect(square, 'out', square_join, "in1")
+    wf.run()