import autopath
from py.test import raises

from tiramisu.config import Config
from tiramisu.option import StrOption, OptionDescription


def return_true(value, param=None):
    if value == 'val' and param in [None, 'yes']:
        return True


def return_false(value, param=None):
    if value == 'val' and param in [None, 'yes']:
        raise ValueError('error')


def return_val(value, param=None):
    return 'val'


def return_if_val(value):
    if value != 'val':
        raise ValueError('error')


def test_validator():
    opt1 = StrOption('opt1', '', validator=return_true, default='val')
    raises(ValueError, "StrOption('opt2', '', validator=return_false, default='val')")
    opt2 = StrOption('opt2', '', validator=return_false)
    root = OptionDescription('root', '', [opt1, opt2])
    cfg = Config(root)
    assert cfg.opt1 == 'val'
    raises(ValueError, "cfg.opt2 = 'val'")


def test_validator_params():
    opt1 = StrOption('opt1', '', validator=return_true, validator_params={'': ('yes',)}, default='val')
    raises(ValueError, "StrOption('opt2', '', validator=return_false, validator_params={'': ('yes',)}, default='val')")
    opt2 = StrOption('opt2', '', validator=return_false, validator_params={'': ('yes',)})
    root = OptionDescription('root', '', [opt1, opt2])
    cfg = Config(root)
    assert cfg.opt1 == 'val'
    raises(ValueError, "cfg.opt2 = 'val'")


def test_validator_params_key():
    opt1 = StrOption('opt1', '', validator=return_true, validator_params={'param': ('yes',)}, default='val')
    raises(TypeError, "StrOption('opt2', '', validator=return_true, validator_params={'param_unknown': ('yes',)}, default='val')")
    root = OptionDescription('root', '', [opt1])
    cfg = Config(root)
    assert cfg.opt1 == 'val'


def test_validator_params_option():
    opt0 = StrOption('opt0', '', default='val')
    raises(ValueError, "opt1 = StrOption('opt1', '', validator=return_true, validator_params={'': ((opt0, False),)}, default='val')")


def test_validator_multi():
    opt1 = StrOption('opt1', '', validator=return_if_val, multi=True)
    root = OptionDescription('root', '', [opt1])
    cfg = Config(root)
    assert cfg.opt1 == []
    cfg.opt1.append('val')
    assert cfg.opt1 == ['val']
    raises(ValueError, "cfg.opt1.append('val1')")
    raises(ValueError, "cfg.opt1 = ['val', 'val1']")


def test_validator_warning():
    opt1 = StrOption('opt1', '', validator=return_true, default='val', only_warning=True)
    opt2 = StrOption('opt2', '', validator=return_false, only_warning=True)
    opt3 = StrOption('opt3', '', validator=return_if_val, multi=True, only_warning=True)
    root = OptionDescription('root', '', [opt1, opt2, opt3])
    cfg = Config(root)
    assert cfg.opt1 == 'val'
    cfg.opt1 = 'val'
    assert cfg.cfgimpl_get_values().has_warning() is False
    cfg.opt2 = 'val'
    assert cfg.cfgimpl_get_values().has_warning() is True
    assert cfg.cfgimpl_get_values().get_last_warning() == 'invalid value val for option opt2: error'
    assert cfg.cfgimpl_get_values().has_warning() is False
    cfg.opt3.append('val')
    assert cfg.cfgimpl_get_values().has_warning() is False
    cfg.opt3.append('val1')
    assert cfg.cfgimpl_get_values().has_warning() is True
    assert cfg.cfgimpl_get_values().get_last_warning() == 'invalid value val1 for option opt3: error'
    assert cfg.cfgimpl_get_values().has_warning() is False
    raises(ValueError, "cfg.opt2 = 1")