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# Test case for `icebox_asc2hlc' and `icebox_hlc2asc': Does conversion
# from LUT strings to logic expressions and back work correctly?
# Copyright (C) 2017 Roland Lutz
#
# This program is free software: you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation, either version 3 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
import sys
import icebox
from icebox_asc2hlc import lut_to_logic_expression
from icebox_hlc2asc import logic_expression_to_lut
def main():
sys.stderr.write("testing conversion from LUT strings "
"to logic expressions and back")
for i in range(65536):
if i % 4096 == 0:
sys.stderr.write(".")
sys.stderr.flush()
lut = bin(i)[2:].zfill(16)
s = lut_to_logic_expression(lut, ('a', 'b', 'c', 'd'))
l = logic_expression_to_lut(s, ('a', 'b', 'c', 'd'))
if l != lut:
sys.stderr.write("\nERROR at LUT = %s\n" % lut)
sys.stderr.write("stringified = %s\n" % s)
sys.stderr.write("resulting LUT = %s\n" % l)
sys.exit(1)
sys.stderr.write("\n")
if __name__ == '__main__':
main()
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