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python-dependency-injector/tests/unit/providers/test_configuration_py2_py3.py
Roman Mogylatov 507a832bb8 Add Configuration.from_env() method + refactoring
2020-06-25 12:50:42 -04:00

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"""Dependency injector config providers unit tests."""
import contextlib
import os
import sys
import tempfile
import unittest2 as unittest
from dependency_injector import containers, providers, errors
class ConfigTests(unittest.TestCase):
def setUp(self):
self.config = providers.Configuration(name='config')
def tearDown(self):
del self.config
def test_default_name(self):
config = providers.Configuration()
self.assertEqual(config.get_name(), 'config')
def test_providers_are_providers(self):
self.assertTrue(providers.is_provider(self.config.a))
self.assertTrue(providers.is_provider(self.config.a.b))
self.assertTrue(providers.is_provider(self.config.a.b.c))
self.assertTrue(providers.is_provider(self.config.a.b.d))
def test_providers_are_not_delegates(self):
self.assertFalse(providers.is_delegated(self.config.a))
self.assertFalse(providers.is_delegated(self.config.a.b))
self.assertFalse(providers.is_delegated(self.config.a.b.c))
self.assertFalse(providers.is_delegated(self.config.a.b.d))
def test_providers_identity(self):
self.assertIs(self.config.a, self.config.a)
self.assertIs(self.config.a.b, self.config.a.b)
self.assertIs(self.config.a.b.c, self.config.a.b.c)
self.assertIs(self.config.a.b.d, self.config.a.b.d)
def test_get_name(self):
self.assertEqual(self.config.a.b.c.get_name(), 'config.a.b.c')
def test_providers_value_setting(self):
a = self.config.a
ab = self.config.a.b
abc = self.config.a.b.c
abd = self.config.a.b.d
self.config.update({'a': {'b': {'c': 1, 'd': 2}}})
self.assertEqual(a(), {'b': {'c': 1, 'd': 2}})
self.assertEqual(ab(), {'c': 1, 'd': 2})
self.assertEqual(abc(), 1)
self.assertEqual(abd(), 2)
def test_providers_with_already_set_value(self):
self.config.update({'a': {'b': {'c': 1, 'd': 2}}})
a = self.config.a
ab = self.config.a.b
abc = self.config.a.b.c
abd = self.config.a.b.d
self.assertEqual(a(), {'b': {'c': 1, 'd': 2}})
self.assertEqual(ab(), {'c': 1, 'd': 2})
self.assertEqual(abc(), 1)
self.assertEqual(abd(), 2)
def test_providers_value_override(self):
a = self.config.a
ab = self.config.a.b
abc = self.config.a.b.c
abd = self.config.a.b.d
self.config.override({'a': {'b': {'c': 1, 'd': 2}}})
self.assertEqual(a(), {'b': {'c': 1, 'd': 2}})
self.assertEqual(ab(), {'c': 1, 'd': 2})
self.assertEqual(abc(), 1)
self.assertEqual(abd(), 2)
def test_providers_with_already_overridden_value(self):
self.config.override({'a': {'b': {'c': 1, 'd': 2}}})
a = self.config.a
ab = self.config.a.b
abc = self.config.a.b.c
abd = self.config.a.b.d
self.assertEqual(a(), {'b': {'c': 1, 'd': 2}})
self.assertEqual(ab(), {'c': 1, 'd': 2})
self.assertEqual(abc(), 1)
self.assertEqual(abd(), 2)
def test_providers_with_default_value(self):
self.config = providers.Configuration(
name='config', default={'a': {'b': {'c': 1, 'd': 2}}})
a = self.config.a
ab = self.config.a.b
abc = self.config.a.b.c
abd = self.config.a.b.d
self.assertEqual(a(), {'b': {'c': 1, 'd': 2}})
self.assertEqual(ab(), {'c': 1, 'd': 2})
self.assertEqual(abc(), 1)
self.assertEqual(abd(), 2)
def test_providers_with_default_value_overriding(self):
self.config = providers.Configuration(
name='config', default={'a': {'b': {'c': 1, 'd': 2}}})
self.assertEqual(self.config.a(), {'b': {'c': 1, 'd': 2}})
self.assertEqual(self.config.a.b(), {'c': 1, 'd': 2})
self.assertEqual(self.config.a.b.c(), 1)
self.assertEqual(self.config.a.b.d(), 2)
self.config.override({'a': {'b': {'c': 3, 'd': 4}}})
self.assertEqual(self.config.a(), {'b': {'c': 3, 'd': 4}})
self.assertEqual(self.config.a.b(), {'c': 3, 'd': 4})
self.assertEqual(self.config.a.b.c(), 3)
self.assertEqual(self.config.a.b.d(), 4)
self.config.reset_override()
self.assertEqual(self.config.a(), {'b': {'c': 1, 'd': 2}})
self.assertEqual(self.config.a.b(), {'c': 1, 'd': 2})
self.assertEqual(self.config.a.b.c(), 1)
self.assertEqual(self.config.a.b.d(), 2)
def test_value_of_undefined_option(self):
self.assertIsNone(self.config.a())
def test_getting_of_special_attributes(self):
with self.assertRaises(AttributeError):
self.config.__name__
def test_getting_of_special_attributes_from_child(self):
a = self.config.a
with self.assertRaises(AttributeError):
a.__name__
def test_deepcopy(self):
provider = providers.Configuration('config')
provider_copy = providers.deepcopy(provider)
self.assertIsNot(provider, provider_copy)
self.assertIsInstance(provider, providers.Configuration)
def test_deepcopy_from_memo(self):
provider = providers.Configuration('config')
provider_copy_memo = providers.Configuration('config')
provider_copy = providers.deepcopy(
provider, memo={id(provider): provider_copy_memo})
self.assertIs(provider_copy, provider_copy_memo)
def test_deepcopy_overridden(self):
provider = providers.Configuration('config')
object_provider = providers.Object(object())
provider.override(object_provider)
provider_copy = providers.deepcopy(provider)
object_provider_copy = provider_copy.overridden[0]
self.assertIsNot(provider, provider_copy)
self.assertIsInstance(provider, providers.Configuration)
self.assertIsNot(object_provider, object_provider_copy)
self.assertIsInstance(object_provider_copy, providers.Object)
def test_repr(self):
self.assertEqual(repr(self.config),
'<dependency_injector.providers.'
'Configuration({0}) at {1}>'.format(
repr('config'),
hex(id(self.config))))
def test_repr_child(self):
self.assertEqual(repr(self.config.a.b.c),
'<dependency_injector.providers.'
'Configuration({0}) at {1}>'.format(
repr('config.a.b.c'),
hex(id(self.config.a.b.c))))
class ConfigLinkingTests(unittest.TestCase):
class TestCore(containers.DeclarativeContainer):
config = providers.Configuration('core')
value_getter = providers.Callable(lambda _: _, config.value)
class TestServices(containers.DeclarativeContainer):
config = providers.Configuration('services')
value_getter = providers.Callable(lambda _: _, config.value)
def test(self):
root_config = providers.Configuration('main')
core = self.TestCore(config=root_config.core)
services = self.TestServices(config=root_config.services)
root_config.override(
{
'core': {
'value': 'core',
},
'services': {
'value': 'services',
},
},
)
self.assertEqual(core.config(), {'value': 'core'})
self.assertEqual(core.config.value(), 'core')
self.assertEqual(core.value_getter(), 'core')
self.assertEqual(services.config(), {'value': 'services'})
self.assertEqual(services.config.value(), 'services')
self.assertEqual(services.value_getter(), 'services')
def test_double_override(self):
root_config = providers.Configuration('main')
core = self.TestCore(config=root_config.core)
services = self.TestServices(config=root_config.services)
root_config.override(
{
'core': {
'value': 'core1',
},
'services': {
'value': 'services1',
},
},
)
root_config.override(
{
'core': {
'value': 'core2',
},
'services': {
'value': 'services2',
},
},
)
self.assertEqual(core.config(), {'value': 'core2'})
self.assertEqual(core.config.value(), 'core2')
self.assertEqual(core.value_getter(), 'core2')
self.assertEqual(services.config(), {'value': 'services2'})
self.assertEqual(services.config.value(), 'services2')
self.assertEqual(services.value_getter(), 'services2')
class ConfigFromIniTests(unittest.TestCase):
def setUp(self):
self.config = providers.Configuration(name='config')
_, self.config_file_1 = tempfile.mkstemp()
with open(self.config_file_1, 'w') as config_file:
config_file.write(
'[section1]\n'
'value1=1\n'
'\n'
'[section2]\n'
'value2=2\n'
)
_, self.config_file_2 = tempfile.mkstemp()
with open(self.config_file_2, 'w') as config_file:
config_file.write(
'[section1]\n'
'value1=11\n'
'value11=11\n'
'[section3]\n'
'value3=3\n'
)
def tearDown(self):
del self.config
os.unlink(self.config_file_1)
os.unlink(self.config_file_2)
def test(self):
self.config.from_ini(self.config_file_1)
self.assertEqual(self.config(), {'section1': {'value1': '1'}, 'section2': {'value2': '2'}})
self.assertEqual(self.config.section1(), {'value1': '1'})
self.assertEqual(self.config.section1.value1(), '1')
self.assertEqual(self.config.section2(), {'value2': '2'})
self.assertEqual(self.config.section2.value2(), '2')
def test_merge(self):
self.config.from_ini(self.config_file_1)
self.config.from_ini(self.config_file_2)
self.assertEqual(
self.config(),
{
'section1': {
'value1': '11',
'value11': '11',
},
'section2': {
'value2': '2',
},
'section3': {
'value3': '3',
},
},
)
self.assertEqual(self.config.section1(), {'value1': '11', 'value11': '11'})
self.assertEqual(self.config.section1.value1(), '11')
self.assertEqual(self.config.section1.value11(), '11')
self.assertEqual(self.config.section2(), {'value2': '2'})
self.assertEqual(self.config.section2.value2(), '2')
self.assertEqual(self.config.section3(), {'value3': '3'})
self.assertEqual(self.config.section3.value3(), '3')
class ConfigFromYamlTests(unittest.TestCase):
def setUp(self):
self.config = providers.Configuration(name='config')
_, self.config_file_1 = tempfile.mkstemp()
with open(self.config_file_1, 'w') as config_file:
config_file.write(
'section1:\n'
' value1: 1\n'
'\n'
'section2:\n'
' value2: 2\n'
)
_, self.config_file_2 = tempfile.mkstemp()
with open(self.config_file_2, 'w') as config_file:
config_file.write(
'section1:\n'
' value1: 11\n'
' value11: 11\n'
'section3:\n'
' value3: 3\n'
)
def tearDown(self):
del self.config
os.unlink(self.config_file_1)
os.unlink(self.config_file_2)
@unittest.skipIf(sys.version_info[:2] == (3, 4), 'PyYAML does not support Python 3.4')
def test(self):
self.config.from_yaml(self.config_file_1)
self.assertEqual(self.config(), {'section1': {'value1': 1}, 'section2': {'value2': 2}})
self.assertEqual(self.config.section1(), {'value1': 1})
self.assertEqual(self.config.section1.value1(), 1)
self.assertEqual(self.config.section2(), {'value2': 2})
self.assertEqual(self.config.section2.value2(), 2)
@unittest.skipIf(sys.version_info[:2] == (3, 4), 'PyYAML does not support Python 3.4')
def test_merge(self):
self.config.from_yaml(self.config_file_1)
self.config.from_yaml(self.config_file_2)
self.assertEqual(
self.config(),
{
'section1': {
'value1': 11,
'value11': 11,
},
'section2': {
'value2': 2,
},
'section3': {
'value3': 3,
},
},
)
self.assertEqual(self.config.section1(), {'value1': 11, 'value11': 11})
self.assertEqual(self.config.section1.value1(), 11)
self.assertEqual(self.config.section1.value11(), 11)
self.assertEqual(self.config.section2(), {'value2': 2})
self.assertEqual(self.config.section2.value2(), 2)
self.assertEqual(self.config.section3(), {'value3': 3})
self.assertEqual(self.config.section3.value3(), 3)
def test_no_yaml_installed(self):
@contextlib.contextmanager
def no_yaml_module():
yaml = providers.yaml
providers.yaml = None
yield
providers.yaml = yaml
with no_yaml_module():
with self.assertRaises(errors.Error) as error:
self.config.from_yaml(self.config_file_1)
self.assertEqual(
error.exception.args[0],
'Unable to load yaml configuration - PyYAML is not installed. '
'Install PyYAML or install Dependency Injector with yaml extras: '
'"pip install dependency-injector[yaml]"',
)
class ConfigFromDict(unittest.TestCase):
def setUp(self):
self.config = providers.Configuration(name='config')
self.config_options_1 = {
'section1': {
'value1': '1',
},
'section2': {
'value2': '2',
},
}
self.config_options_2 = {
'section1': {
'value1': '11',
'value11': '11',
},
'section3': {
'value3': '3',
},
}
def test(self):
self.config.from_dict(self.config_options_1)
self.assertEqual(self.config(), {'section1': {'value1': '1'}, 'section2': {'value2': '2'}})
self.assertEqual(self.config.section1(), {'value1': '1'})
self.assertEqual(self.config.section1.value1(), '1')
self.assertEqual(self.config.section2(), {'value2': '2'})
self.assertEqual(self.config.section2.value2(), '2')
def test_merge(self):
self.config.from_dict(self.config_options_1)
self.config.from_dict(self.config_options_2)
self.assertEqual(
self.config(),
{
'section1': {
'value1': '11',
'value11': '11',
},
'section2': {
'value2': '2',
},
'section3': {
'value3': '3',
},
},
)
self.assertEqual(self.config.section1(), {'value1': '11', 'value11': '11'})
self.assertEqual(self.config.section1.value1(), '11')
self.assertEqual(self.config.section1.value11(), '11')
self.assertEqual(self.config.section2(), {'value2': '2'})
self.assertEqual(self.config.section2.value2(), '2')
self.assertEqual(self.config.section3(), {'value3': '3'})
self.assertEqual(self.config.section3.value3(), '3')
class ConfigFromEnvTests(unittest.TestCase):
def setUp(self):
self.config = providers.Configuration(name='config')
os.environ['CONFIG_TEST_ENV'] = 'test-value'
def tearDown(self):
del self.config
del os.environ['CONFIG_TEST_ENV']
def test(self):
self.config.from_env('CONFIG_TEST_ENV')
self.assertEqual(self.config(), 'test-value')
def test_default(self):
self.config.from_env('UNDEFINED_ENV', 'default-value')
self.assertEqual(self.config(), 'default-value')
def test_with_children(self):
self.config.section1.value1.from_env('CONFIG_TEST_ENV')
self.assertIsNone(self.config())
self.assertIsNone(self.config.section1())
self.assertEqual(self.config.section1.value1(), 'test-value')
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