# Copyright (c) 2009 Tim Freeman
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# (This is the standard MIT License, copied from
# http://www.opensource.org/licenses/mit-license.php on 24 Apr 2007.)
from turing_tape import turing_tape
import sys
from constants import left, right, end, done, truncate
import machine
from compile import turing_program, turing_compile
from animate import draw_action, show_octal, draw_tape
import animate
import test_util
from test_util import assert_equals

assert draw_tape(8, 0x5a, 3) == '   0 1 0 1>1<0 1 0 '
assert draw_tape(8, 0x5a, 0) == '   0 1 0 1 1 0 1>0<'
assert draw_tape(8, 0x5a, 8) == '> <0 1 0 1 1 0 1 0 '
assert show_octal(3) == "003"
assert draw_action(055, 3, state_to_name = show_octal) == "w1r 005"

empty_as = turing_program("trunc",
                          trunc = {(0,1,end):(1, left, "done")},
                          done = done)
c = turing_compile(empty_as, pretty_octal = True)
def exercise():
    machine.turing(c.program, turing_tape(length=5,bits=0),
                   50, animate=animate.default_animation)
v = test_util.with_output_to_string(exercise)
assert_equals(v["output"].strip(), """
   0 0 0 0>0< state 000 0>w1l 001 1>w1l 001 end>w1l 001
   0 0 0>0<1  state 001 0>dnl 001 1>dnl 001 end>dnl 001
   0 0 0>0<1 
""".strip())
assert v["exception"] is None