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https://github.com/ets-labs/python-dependency-injector.git
synced 2024-11-22 17:47:02 +03:00
Implement from_*() methods and add tests
This commit is contained in:
Roman Mogylatov
parent
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commit
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@ -51,8 +51,8 @@ class Container:
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def reset_singletons(self) -> SingletonResetContext[C_Base]: ...
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def check_dependencies(self) -> None: ...
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def from_schema(self, schema: Dict[Any, Any]) -> None: ...
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def from_yaml_schema(self, filepath: Union[Path, str]) -> None:
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def from_json_schema(self, filepath: Union[Path, str]) -> None:
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def from_yaml_schema(self, filepath: Union[Path, str], loader: Optional[Any]=None) -> None: ...
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def from_json_schema(self, filepath: Union[Path, str]) -> None: ...
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@overload
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def resolve_provider_name(self, provider: Provider) -> str: ...
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@classmethod
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@ -1,5 +1,6 @@
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"""Containers module."""
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import json
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import sys
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try:
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@ -7,6 +8,11 @@ try:
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except ImportError:
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asyncio = None
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try:
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import yaml
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except ImportError:
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yaml = None
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import six
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from . import providers, errors
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@ -336,15 +342,32 @@ class DynamicContainer(Container):
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for name, provider in build_schema(schema).items():
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self.set_provider(name, provider)
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def from_yaml_schema(self, filepath):
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"""Build container providers from YAML file schema."""
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# TODO
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...
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def from_yaml_schema(self, filepath, loader=None):
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"""Build container providers from YAML schema.
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You can specify type of loader as a second argument. By default, method
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uses ``SafeLoader``.
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"""
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if yaml is None:
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raise errors.Error(
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'Unable to load yaml schema - PyYAML is not installed. '
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'Install PyYAML or install Dependency Injector with yaml extras: '
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'"pip install dependency-injector[yaml]"'
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)
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if loader is None:
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loader = yaml.SafeLoader
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with open(filepath) as file:
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schema = yaml.load(file, loader)
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self.from_schema(schema)
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def from_json_schema(self, filepath):
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"""Build container providers from JSON file schema."""
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# TODO
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...
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"""Build container providers from JSON schema."""
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with open(filepath) as file:
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schema = json.load(file)
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self.from_schema(schema)
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def resolve_provider_name(self, provider):
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"""Try to resolve provider name."""
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@ -59,9 +59,14 @@ def _setup_injections(
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arg_injections = data.get('args')
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if arg_injections:
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for arg in arg_injections:
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injection = _resolve_provider(container, arg)
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injection = None
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if isinstance(arg, str):
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injection = _resolve_provider(container, arg)
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if not injection:
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injection = arg
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args.append(injection)
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if args:
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provider.add_args(*args)
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@ -69,9 +74,14 @@ def _setup_injections(
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kwarg_injections = data.get('kwargs')
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if kwarg_injections:
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for name, arg in kwarg_injections.items():
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injection = _resolve_provider(container, arg)
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injection = None
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if isinstance(arg, str):
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injection = _resolve_provider(container, arg)
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if not injection:
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injection = arg
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kwargs[name] = injection
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if kwargs:
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provider.add_kwargs(**kwargs)
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@ -112,7 +122,7 @@ def _get_provider_cls(provider_cls_name: str) -> Type[providers.Provider]:
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if custom_provider_type:
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return custom_provider_type
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raise SchemaError(f'Undefined provider class: "{provider_cls_name}"')
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raise SchemaError(f'Undefined provider class "{provider_cls_name}"')
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def _fetch_provider_cls_from_std(provider_cls_name: str) -> Optional[Type[providers.Provider]]:
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@ -134,7 +144,16 @@ def _import_provider_cls(provider_cls_name: str) -> Optional[Type[providers.Prov
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def _import_string(string_name: str) -> Optional[object]:
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segments = string_name.split('.')
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if len(segments) == 1:
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member = __builtins__.get(segments[0])
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if member:
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return member
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module_name = '.'.join(segments[:-1])
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if not module_name:
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return None
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member = segments[-1]
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module = importlib.import_module(module_name)
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return getattr(module, member, None)
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162
tests/unit/schema/test_containers_api_py36.py
Normal file
162
tests/unit/schema/test_containers_api_py36.py
Normal file
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@ -0,0 +1,162 @@
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import contextlib
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import json
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import os.path
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import tempfile
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import unittest
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import yaml
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from dependency_injector import containers, providers, errors
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class FromSchemaTests(unittest.TestCase):
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def test(self):
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container = containers.DynamicContainer()
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container.from_schema(
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{
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'version': '1',
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'providers': {
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'provider1': {
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'provider': 'Factory',
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'provides': 'list',
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'args': [1, 2, 3],
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},
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'provider2': {
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'provider': 'Factory',
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'provides': 'dict',
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'kwargs': {
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'one': 'provider1',
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'two': 2,
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},
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},
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},
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},
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)
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self.assertIsInstance(container.provider1, providers.Factory)
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self.assertIs(container.provider1.provides, list)
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self.assertEqual(container.provider1.args, (1, 2, 3))
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self.assertIsInstance(container.provider2, providers.Factory)
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self.assertIs(container.provider2.provides, dict)
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self.assertEqual(container.provider2.kwargs, {'one': container.provider1, 'two': 2})
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class FromYamlSchemaTests(unittest.TestCase):
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def test(self):
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container = containers.DynamicContainer()
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with tempfile.TemporaryDirectory() as tmp_dir:
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schema_path = os.path.join(tmp_dir, 'schema.yml')
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with open(schema_path, 'w') as file:
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file.write("""
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version: "1"
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providers:
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provider1:
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provider: Factory
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provides: list
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args:
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- 1
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- 2
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- 3
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provider2:
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provider: Factory
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provides: dict
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kwargs:
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one: provider1
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two: 2
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""")
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container.from_yaml_schema(schema_path)
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self.assertIsInstance(container.provider1, providers.Factory)
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self.assertIs(container.provider1.provides, list)
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self.assertEqual(container.provider1.args, (1, 2, 3))
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self.assertIsInstance(container.provider2, providers.Factory)
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self.assertIs(container.provider2.provides, dict)
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self.assertEqual(container.provider2.kwargs, {'one': container.provider1, 'two': 2})
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def test_with_loader(self):
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container = containers.DynamicContainer()
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with tempfile.TemporaryDirectory() as tmp_dir:
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schema_path = os.path.join(tmp_dir, 'schema.yml')
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with open(schema_path, 'w') as file:
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file.write("""
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version: "1"
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providers:
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provider:
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provider: Factory
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provides: list
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args: [1, 2, 3]
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""")
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container.from_yaml_schema(schema_path, loader=yaml.Loader)
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self.assertIsInstance(container.provider, providers.Factory)
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self.assertIs(container.provider.provides, list)
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self.assertEqual(container.provider.args, (1, 2, 3))
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def test_no_yaml_installed(self):
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@contextlib.contextmanager
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def no_yaml_module():
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containers.yaml = None
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yield
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containers.yaml = yaml
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container = containers.DynamicContainer()
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with no_yaml_module():
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with self.assertRaises(errors.Error) as error:
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container.from_yaml_schema('./no-yaml-installed.yml')
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self.assertEqual(
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error.exception.args[0],
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'Unable to load yaml schema - PyYAML is not installed. '
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'Install PyYAML or install Dependency Injector with yaml extras: '
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'"pip install dependency-injector[yaml]"',
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)
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class FromJsonSchemaTests(unittest.TestCase):
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def test(self):
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container = containers.DynamicContainer()
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with tempfile.TemporaryDirectory() as tmp_dir:
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schema_path = os.path.join(tmp_dir, 'schema.json')
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with open(schema_path, 'w') as file:
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file.write(
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json.dumps(
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{
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'version': '1',
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'providers': {
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'provider1': {
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'provider': 'Factory',
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'provides': 'list',
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'args': [1, 2, 3],
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},
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'provider2': {
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'provider': 'Factory',
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'provides': 'dict',
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'kwargs': {
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'one': 'provider1',
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'two': 2,
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},
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},
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},
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},
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indent=4,
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),
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)
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container.from_json_schema(schema_path)
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self.assertIsInstance(container.provider1, providers.Factory)
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self.assertIs(container.provider1.provides, list)
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self.assertEqual(container.provider1.args, (1, 2, 3))
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self.assertIsInstance(container.provider2, providers.Factory)
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self.assertIs(container.provider2.provides, dict)
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self.assertEqual(container.provider2.kwargs, {'one': container.provider1, 'two': 2})
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