File size: 3,329 Bytes
dee9fba | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | import json
import os
import unittest
from importlib import import_module
from faker.config import META_PROVIDERS_MODULES, PROVIDERS
from faker.generator import random
from faker.utils.datasets import add_dicts
from faker.utils.distribution import choices_distribution, choices_distribution_unique
from faker.utils.loading import find_available_locales, find_available_providers
TEST_DIR = os.path.dirname(__file__)
class UtilsTestCase(unittest.TestCase):
def test_choice_distribution(self):
a = ('a', 'b', 'c', 'd')
p = (0.5, 0.2, 0.2, 0.1)
sample = choices_distribution(a, p)[0]
assert sample in a
with open(os.path.join(TEST_DIR, 'random_state.json'), 'r') as fh:
random_state = json.load(fh)
random_state[1] = tuple(random_state[1])
random.setstate(random_state)
samples = choices_distribution(a, p, length=100)
a_pop = len([i for i in samples if i == 'a'])
b_pop = len([i for i in samples if i == 'b'])
c_pop = len([i for i in samples if i == 'c'])
d_pop = len([i for i in samples if i == 'd'])
boundaries = []
tolerance = 5
for probability in p:
boundaries.append([100 * probability + tolerance, 100 * probability - tolerance])
assert boundaries[0][0] > a_pop > boundaries[0][1]
assert boundaries[1][0] > b_pop > boundaries[1][1]
assert boundaries[2][0] > c_pop > boundaries[2][1]
assert boundaries[3][0] > d_pop > boundaries[3][1]
def test_choices_distribution_unique(self):
a = ('a', 'b', 'c', 'd')
p = (0.25, 0.25, 0.25, 0.25)
with self.assertRaises(AssertionError):
choices_distribution_unique(a, p, length=5)
samples = choices_distribution_unique(a, p, length=4)
assert len(set(samples)) == len(samples)
def test_add_dicts(self):
t1 = {'a': 1, 'b': 2}
t2 = {'b': 1, 'c': 3}
t3 = {'d': 4}
result = add_dicts(t1, t2, t3)
assert result == {'a': 1, 'c': 3, 'b': 3, 'd': 4}
def test_find_available_locales(self):
result = find_available_locales(PROVIDERS)
assert len(result) != 0
def test_find_available_providers(self):
modules = [import_module(path) for path in META_PROVIDERS_MODULES]
providers = find_available_providers(modules)
expected_providers = list(map(str, [
'faker.providers.address',
'faker.providers.automotive',
'faker.providers.bank',
'faker.providers.barcode',
'faker.providers.color',
'faker.providers.company',
'faker.providers.credit_card',
'faker.providers.currency',
'faker.providers.date_time',
'faker.providers.file',
'faker.providers.geo',
'faker.providers.internet',
'faker.providers.isbn',
'faker.providers.job',
'faker.providers.lorem',
'faker.providers.misc',
'faker.providers.person',
'faker.providers.phone_number',
'faker.providers.profile',
'faker.providers.python',
'faker.providers.ssn',
'faker.providers.user_agent',
]))
assert providers == expected_providers
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