''' Tests for ordr2.schemas.helpers '''

import pytest

from pyramid.testing import DummyRequest, DummyResource

from .. import app_config, dbsession, get_user


def test_deferred_csrf_default(app_config):
    ''' deferred_csrf_default should return a csrf token '''
    from ordr2.schemas.helpers import deferred_csrf_default
    from pyramid.csrf import get_csrf_token

    request = DummyRequest()
    token = deferred_csrf_default(None, {'request': request})

    assert token == get_csrf_token(request)


def test_deferred_csrf_validator_ok(app_config):
    ''' test deferred_csrf_validator with valid csrf token '''
    from ordr2.schemas.helpers import deferred_csrf_validator
    from pyramid.csrf import get_csrf_token

    request = DummyRequest()
    token = get_csrf_token(request)
    request.POST = {'csrf_token': token}
    validation_func = deferred_csrf_validator(None, {'request': request})

    assert validation_func(None, None) is None


@pytest.mark.parametrize('post', [{}, {'csrf_token': 'Albatross!'}])
def test_deferred_csrf_validator_fails_on_no_csrf_token(app_config, post):
    ''' test deferred_csrf_validator with invalid or missing csrf token '''
    from ordr2.schemas.helpers import deferred_csrf_validator
    from colander import Invalid

    request = DummyRequest()
    request.POST = post
    validation_func = deferred_csrf_validator(None, {'request': request})

    with pytest.raises(Invalid):
        assert validation_func(None, None) is None


def test_deferred_unique_username_validator_ok(dbsession):
    ''' unknown usernames should not raise an invalidation error '''
    from ordr2.schemas.helpers import deferred_unique_username_validator

    request = DummyRequest(dbsession=dbsession)
    user = get_user('user')
    dbsession.add(user)
    validation_func = deferred_unique_username_validator(
        None,
        {'request': request}
        )

    assert validation_func(None, 'AnneElk') is None


def test_deferred_unique_username_validator_fails(dbsession):
    ''' known  username should raise an invalidation error '''
    from ordr2.schemas.helpers import deferred_unique_username_validator
    from colander import Invalid

    request = DummyRequest(dbsession=dbsession)
    user = get_user('user')
    dbsession.add(user)
    validation_func = deferred_unique_username_validator(
        None,
        {'request': request}
        )

    with pytest.raises(Invalid):
        assert validation_func(None, 'TerryGilliam') is None


def test_deferred_unique_email_validator_ok(dbsession):
    ''' unknown emails should not raise an invalidation error '''
    from ordr2.schemas.helpers import deferred_unique_email_validator

    context = DummyResource(model=None)
    request = DummyRequest(dbsession=dbsession, context=context)
    user = get_user('user')
    dbsession.add(user)
    validation_func = deferred_unique_email_validator(
        None,
        {'request': request}
        )

    assert validation_func(None, 'elk@example.com') is None


def test_deferred_unique_email_validator_ok_belongs_to_same_user(dbsession):
    ''' known emails of a user might not raise an error

    if a user is edited and the mail address is not change, no invalidation
    error should be raised
    '''
    from ordr2.schemas.helpers import deferred_unique_email_validator

    user = get_user('user')
    context = DummyResource(model=user)
    request = DummyRequest(dbsession=dbsession, context=context)
    dbsession.add(user)
    validation_func = deferred_unique_email_validator(
        None,
        {'request': request}
        )

    assert validation_func(None, user.email) is None


@pytest.mark.parametrize('email', ['', 'gilliam@example.com', 'malformed'])
def test_deferred_unique_email_validator_fails(dbsession, email):
    ''' known, empty or malformed emails should raise an invalidation error '''
    from ordr2.schemas.helpers import deferred_unique_email_validator
    from colander import Invalid

    context = DummyResource(model=None)
    request = DummyRequest(dbsession=dbsession, context=context)
    user = get_user('user')
    dbsession.add(user)
    validation_func = deferred_unique_email_validator(
        None,
        {'request': request}
        )

    with pytest.raises(Invalid):
        assert validation_func(None, email) is None


def test_deferred_password_validator_ok(app_config):
    ''' correct password should not raise invalidation error '''
    from ordr2.schemas.helpers import deferred_password_validator
    from pyramid.csrf import get_csrf_token

    user = get_user('user')
    request = DummyRequest(user=user)
    validation_func = deferred_password_validator(None, {'request': request})

    assert validation_func(None, 'Terry') is None


def test_deferred_password_validator_fails(app_config):
    ''' incorrect password should raise invalidation error '''
    from ordr2.schemas.helpers import deferred_password_validator
    from colander import Invalid

    user = get_user('user')
    request = DummyRequest(user=user)
    validation_func = deferred_password_validator(None, {'request': request})

    with pytest.raises(Invalid):
        assert validation_func(None, 'Wrong Password') is None