--- /dev/null
+"""
+ Test1064.py
+ Unit test for testing the Part sub-shapes naming, described in the issue 1064
+
+"""
+#=========================================================================
+# Initialization of the test
+#=========================================================================
+from ModelAPI import *
+from GeomDataAPI import *
+from GeomAlgoAPI import *
+from GeomAPI import *
+
+__updated__ = "2015-10-16"
+
+aSession = ModelAPI_Session.get()
+
+#=========================================================================
+# Create a sketch triangle in PartSet
+#=========================================================================
+aPartSet = aSession.moduleDocument()
+aSession.startOperation()
+aSketchFeature = featureToCompositeFeature(aPartSet.addFeature("Sketch"))
+anArray = aSketchFeature.data().addAttribute("IntArray_1", "IntArray")
+anArray.setSize(5)
+assert(anArra.size() == 5)
+
+#=========================================================================
+# End of test
+#=========================================================================