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# -*- coding: utf-8 -*-
import pytest
from envparse import Env, env, ConfigurationError, urlparse
env_vars = dict(
BLANK='',
STR='foo',
INT='42',
FLOAT='33.3',
BOOL_TRUE='1',
BOOL_FALSE='0',
PROXIED='{{STR}}',
LIST_STR='foo,bar',
LIST_STR_WITH_SPACES=' foo, bar',
LIST_INT='1,2,3',
LIST_INT_WITH_SPACES=' 1, 2,3',
DICT_STR='key1=val1, key2=val2',
DICT_INT='key1=1, key2=2',
JSON='{"foo": "bar", "baz": [1, 2, 3]}',
URL='https://example.com/path?query=1',
)
@pytest.fixture(autouse=True, params=['environ', 'envfile'])
def environ(monkeypatch, request):
"""Setup environment with sample variables."""
if request.param == 'environ':
for key, val in env_vars.items():
monkeypatch.setenv(key, val)
elif request.param == 'envfile':
env.read_envfile('tests/envfile')
# Helper function
def assert_type_value(cast, expected, result):
assert cast == type(result)
assert expected == result
def test_var_not_present():
with pytest.raises(ConfigurationError):
env('NOT_PRESENT')
def test_var_not_present_with_default():
default_val = 'default val'
assert default_val, env('NOT_PRESENT', default=default_val)
def test_default_none():
assert_type_value(type(None), None, env('NOT_PRESENT', default=None))
def test_implicit_nonbuiltin_type():
with pytest.raises(AttributeError):
env.foo('FOO')
def test_str():
expected = str(env_vars['STR'])
assert_type_value(str, expected, env('STR'))
assert_type_value(str, expected, env.str('STR'))
def test_int():
expected = int(env_vars['INT'])
assert_type_value(int, expected, env('INT', cast=int))
assert_type_value(int, expected, env.int('INT'))
def test_float():
expected = float(env_vars['FLOAT'])
assert_type_value(float, expected, env.float('FLOAT'))
def test_bool():
assert_type_value(bool, True, env.bool('BOOL_TRUE'))
assert_type_value(bool, False, env.bool('BOOL_FALSE'))
def test_list():
list_str = ['foo', 'bar']
assert_type_value(list, list_str, env('LIST_STR', cast=list))
assert_type_value(list, list_str, env.list('LIST_STR'))
assert_type_value(list, list_str, env.list('LIST_STR_WITH_SPACES'))
list_int = [1, 2, 3]
assert_type_value(list, list_int, env('LIST_INT', cast=list,
subcast=int))
assert_type_value(list, list_int, env.list('LIST_INT', subcast=int))
assert_type_value(list, list_int, env.list('LIST_INT_WITH_SPACES',
subcast=int))
assert_type_value(list, [], env.list('BLANK', subcast=int))
def test_dict():
dict_str = dict(key1='val1', key2='val2')
assert_type_value(dict, dict_str, env.dict('DICT_STR'))
assert_type_value(dict, dict_str, env('DICT_STR', cast=dict))
dict_int = dict(key1=1, key2=2)
assert_type_value(dict, dict_int, env('DICT_INT', cast=dict,
subcast=int))
assert_type_value(dict, dict_int, env.dict('DICT_INT', subcast=int))
assert_type_value(dict, {}, env.dict('BLANK'))
def test_json():
expected = {'foo': 'bar', 'baz': [1, 2, 3]}
assert_type_value(dict, expected, env.json('JSON'))
def test_url():
url = urlparse.urlparse('https://example.com/path?query=1')
assert_type_value(url.__class__, url, env.url('URL'))
def proxied_value():
assert_type_value(str, 'bar', env('PROXIED'))
def test_preprocessor():
assert_type_value(str, 'FOO', env('STR', preprocessor=lambda
v: v.upper()))
def test_postprocessor(monkeypatch):
"""
Test a postprocessor which turns a redis url into a Django compatible
cache url.
"""
redis_url = 'redis://:redispass@127.0.0.1:6379/0'
monkeypatch.setenv('redis_url', redis_url)
expected = {'BACKEND': 'django_redis.cache.RedisCache',
'LOCATION': '127.0.0.1:6379:0',
'OPTIONS': {'PASSWORD': 'redispass'}}
def django_redis(url):
return {
'BACKEND': 'django_redis.cache.RedisCache',
'LOCATION': '{}:{}:{}'.format(url.hostname, url.port, url.path.strip('/')),
'OPTIONS': {'PASSWORD': url.password}}
assert_type_value(dict, expected, env.url('redis_url',
postprocessor=django_redis))
def test_schema():
env = Env(STR=str, STR_DEFAULT=dict(cast=str, default='default'),
INT=int, LIST_STR=list, LIST_INT=dict(cast=list, subcast=int))
assert_type_value(str, 'foo', env('STR'))
assert_type_value(str, 'default', env('STR_DEFAULT'))
assert_type_value(int, 42, env('INT'))
assert_type_value(list, ['foo', 'bar'], env('LIST_STR'))
assert_type_value(list, [1, 2, 3], env('LIST_INT'))
# Overrides
assert_type_value(str, '42', env('INT', cast=str))
assert_type_value(str, 'manual_default', env('STR_DEFAULT',
default='manual_default'))
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