def test_field_get():
lines = [['>', 'v'], ['^', '<']]
fld = Field(2, 2, lines)
assert fld.get_symbol_at(0, 0) == '>'
assert fld.get_symbol_at(1, 0) == 'v'
assert fld.get_symbol_at(0, 1) == '^'
assert fld.get_symbol_at(1, 1) == '<'
def test_field_set():
lines = [['>', 'v'], ['<', '^']]
fld = Field(2, 2, lines)
fld.set_symbol_at(0, 0, 'v')
fld.set_symbol_at(1, 0, '<')
fld.set_symbol_at(1, 1, '^')
fld.set_symbol_at(0, 1, '>')
assert fld.get_symbol_at(0, 0) == 'v'
assert fld.get_symbol_at(1, 0) == '<'
assert fld.get_symbol_at(0, 1) == '>'
assert fld.get_symbol_at(1, 1) == '^'
def test_executor_p():
lines = [['>', 'v'], ['<', '^']]
fld = Field(2, 2, lines)
stk = Stack()
crt = Caret(stk, fld)
stk.push(ord('@'))
stk.push(1)
stk.push(0)
exec_p(crt)
assert fld.get_symbol_at(1, 0) == '@'