# Test case.  This is a sort of degenerate test case; it has only one
#  voltage node, so all currents are zero and all voltages equal that
#  node's voltage.  The network is
#
#	         +--/\/\/\/--b
#	         |           |
#	         |           /
#	         |           \
#	(1V)--a--+           /
#	         |           \
#	         |           /
#	         |           |
#	         +--/\/\/\/--c

V a 1
R a b 1
R a c 1
R b c 1