import re

string = ''


def d1(*args):
    global string
    string += ' '.join(['d1 outter', str(args)]) + "\n"

    def inner(*args):
        global string
        string += ' '.join(['d1 inner', str(args)]) + "\n"
        return args[0]
    return inner


def d2(*args):
    global string
    string += ' '.join(['d2 outter', str(args)]) + "\n"

    def inner(*args):
        global string
        string += ' '.join(['d2 inner', str(args)]) + "\n"
        return args[0]
    return inner


def d3(*args):
    global string
    string += ' '.join(['d3 outter', str(args)]) + "\n"

    def inner(*args):
        global string
        string += ' '.join(['d3 inner', str(args)]) + "\n"
        return args[0]
    return inner


def d4(*args):
    global string
    string += ' '.join(['d4 outter', str(args)]) + "\n"

    def inner(*args):
        global string
        string += ' '.join(['d4 inner', str(args)]) + "\n"
        return args[0]
    return inner


@d1()
@d2()
class Test1():
    global string
    string += 'test1 start\n'

    @d3()
    @d4()
    def test2(_):
        global string
        string += 'test2\n'
        return 'test2 return'
    string += 'test1 end\n'

# todo check function ids


expect = re.compile(r'''
^d1 outter \(\)
d2 outter \(\)
test1 start
d3 outter \(\)
d4 outter \(\)
d4 inner \(<function Test1.test2 at .*>,\)
d3 inner \(<function Test1.test2 at .*>,\)
test1 end
d2 inner \(<class '__main__.Test1'>,\)
d1 inner \(<class '__main__.Test1'>,\)
instantiate test1
run test2 method
test2 return$
'''.strip())
string += 'instantiate test1\n'
test1 = Test1()
string += 'run test2 method\n'
string += test1.test2()
print(string)
assert expect.search(string)