This commit was manufactured by cvs2svn to create branch 'mpl_v2'.

[SVN r14323]

test/back_reference.py

@@ -0,0 +1,30 @@
+'''
+>>> from back_reference_ext import *
+>>> y = Y(3)
+>>> z = Z(4)
+>>> x_instances()
+2
+>>> y2 = copy_Y(y)
+>>> x_instances()
+3
+>>> z2 = copy_Z(z)
+>>> x_instances()
+4
+>>> y_identity(y) is y
+1
+>>> y_equality(y, y)
+1
+'''
+
+def run(args = None):
+    import sys
+    import doctest
+
+    if args is not None:
+        sys.argv = args
+    return doctest.testmod(sys.modules.get(__name__))
+    
+if __name__ == '__main__':
+    print "running..."
+    import sys
+    sys.exit(run()[0])