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test_proxy.py
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/
test_proxy.py
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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from collections import OrderedDict
import unittest
try:
from unittest.mock import patch
except ImportError:
from mock import patch
from faker import Faker
from faker.config import DEFAULT_LOCALE
from faker.generator import Generator
class TestFakerProxyClass(unittest.TestCase):
def setUp(self):
self.faker = None
def test_unspecified_locale(self):
self.faker = Faker()
assert len(self.faker.locales) == 1
assert len(self.faker.factories) == 1
assert self.faker.locales[0] == DEFAULT_LOCALE
def test_locale_as_string(self):
locale = 'en_US'
self.faker = Faker()
assert len(self.faker.locales) == 1
assert len(self.faker.factories) == 1
assert self.faker.locales[0] == locale
def test_locale_as_list(self):
locale = ['en_US', 'en_PH', 'ja_JP', 'de_DE']
self.faker = Faker(locale)
assert set(self.faker.locales) == set(locale)
assert len(self.faker.factories) == len(set(locale))
locale = locale * 3
self.faker = Faker(locale)
assert set(self.faker.locales) == set(locale)
assert len(self.faker.factories) == len(set(locale))
def test_locale_as_ordereddict(self):
locale = OrderedDict([
('de_DE', 3),
('en-US', 2),
('en-PH', 1),
('ja_JP', 5),
])
self.faker = Faker(locale)
assert len(self.faker.locales) == 4
assert self.faker.locales == ['de_DE', 'en_US', 'en_PH', 'ja_JP']
assert self.faker.weights == [3, 2, 1, 5]
locale = OrderedDict([
('de_DE', 3),
('en-US', 2),
('en-PH', 1),
('ja_JP', 5),
('de-DE', 4),
('ja-JP', 2),
('en-US', 1),
])
self.faker = Faker(locale)
assert self.faker.locales == ['de_DE', 'en_US', 'en_PH', 'ja_JP']
assert self.faker.weights == [4, 1, 1, 2]
def test_items(self):
locale = ['de_DE', 'en-US', 'en-PH', 'ja_JP', 'de-DE', 'ja-JP', 'en-US']
processed_locale = list({l.replace('-', '_') for l in locale})
self.faker = Faker(locale)
for locale_name, factory in self.faker.items():
assert locale_name in processed_locale
assert isinstance(factory, Generator)
def test_dunder_getitem(self):
locale = ['de_DE', 'en-US', 'en-PH', 'ja_JP']
self.faker = Faker(locale)
assert isinstance(self.faker['en_US'], Generator)
with self.assertRaises(KeyError):
self.faker['en-US']
@patch('faker.proxy.Faker._map_provider_method')
def test_dunder_getattr_single_locale(self, mock_map_method):
locales = [None, 'en-US']
for locale in locales:
self.faker = Faker(locale)
mock_map_method.assert_not_called()
# Multi-locale factory selection logic should not be triggered
# since there is only one factory (which is immediately returned)
self.faker.name()
mock_map_method.assert_not_called()
# Reset mock object
mock_map_method.reset_mock()
@patch('faker.proxy.random.choice')
@patch('faker.proxy.choices_distribution')
def test_dunder_getattr_multi_locale_no_weights(self, mock_choices_fn, mock_random_choice):
locale = ['de_DE', 'en-US', 'en-PH', 'ja_JP']
self.faker = Faker(locale)
mock_choices_fn.assert_not_called()
mock_random_choice.assert_not_called()
# There are multiple locales, so provider mapping logic is guaranteed to run, and since there
# are no distribution weights, factory selection logic (if necessary) will use `random.choice`
with patch('faker.proxy.Faker._map_provider_method',
wraps=self.faker._map_provider_method) as mock_map_method:
# All factories for the listed locales have the `name` provider method
self.faker.name()
mock_map_method.assert_called_once()
mock_choices_fn.assert_not_called()
mock_random_choice.assert_called_once_with(self.faker.factories)
# Only `en_PH` factory has provider method `luzon_province`, so there is no
# need for `random.choice` factory selection logic to run
mock_map_method.reset_mock()
mock_choices_fn.reset_mock()
mock_random_choice.reset_mock()
self.faker.luzon_province()
mock_map_method.assert_called_once()
mock_choices_fn.assert_not_called()
mock_random_choice.assert_not_called()
# Both `en_US` and `ja_JP` factories have provider method `zipcode`
mock_map_method.reset_mock()
mock_choices_fn.reset_mock()
mock_random_choice.reset_mock()
self.faker.zipcode()
mock_map_method.assert_called_once()
mock_choices_fn.assert_not_called()
mock_random_choice.assert_called_once_with(
[self.faker['en_US'], self.faker['ja_JP']],
)
@patch('faker.proxy.random.choice')
@patch('faker.proxy.choices_distribution')
def test_dunder_getattr_with_weights(self, mock_choices_fn, mock_random_choice):
locale = OrderedDict([
('de_DE', 3),
('en-US', 2),
('en-PH', 1),
('ja_JP', 5),
])
self.faker = Faker(locale)
mock_choices_fn.assert_not_called()
mock_random_choice.assert_not_called()
# There are multiple locales, so provider mapping logic is guaranteed to run, and since there are
# distribution weights, factory selection logic (if necessary) will use `choices_distribution`
with patch('faker.proxy.Faker._map_provider_method',
wraps=self.faker._map_provider_method) as mock_map_method:
# All factories for the listed locales have the `name` provider method
self.faker.name()
mock_map_method.assert_called_once()
mock_choices_fn.assert_called_once_with(self.faker.factories, self.faker.weights, length=1)
mock_random_choice.assert_not_called()
# Only `en_PH` factory has provider method `luzon_province`, so there is no
# need for `choices_distribution` factory selection logic to run
mock_map_method.reset_mock()
mock_choices_fn.reset_mock()
mock_random_choice.reset_mock()
self.faker.luzon_province()
mock_map_method.assert_called_once()
mock_choices_fn.assert_not_called()
mock_random_choice.assert_not_called()
# Both `en_US` and `ja_JP` factories have provider method `zipcode`
mock_map_method.reset_mock()
mock_choices_fn.reset_mock()
mock_random_choice.reset_mock()
self.faker.zipcode()
mock_map_method.assert_called_once()
mock_choices_fn.assert_called_once_with(
[self.faker['en_US'], self.faker['ja_JP']], [2, 5], length=1,
)
mock_random_choice.assert_not_called()