Beispiel #1
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 def test_definition_item_doesnt_exist(self):
     container = IocContainer({
         'definitions': {
             'test': {}
         }
     })
     container.get('test')
Beispiel #2
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 def test_get_builtin(self):
     container = IocContainer({
         'definitions': {
             'test': {
                 'item': {'test': 'test'}
             }
         }
     })
     assert isinstance(container.get('test'), dict)
Beispiel #3
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 def test_get_item(self):
     container = IocContainer({
         'definitions': {
             'test': {
                 'item': 'tests.watson.di.support.SampleDependency',
                 'type': 'singleton',
             },
             'test2': {
                 'item': 'tests.watson.di.support.sample_dependency',
                 'type': 'singleton',
             },
             'test3': {
                 'item': 'tests.watson.di.support.sample_dependency_with_args',
                 'type': 'singleton',
                 'init': {
                     'arg': 'some arg'
                 }
             }
         }
     })
     container.add_definition('def', {'item': lambda container: 'something'})
     assert isinstance(container.get('test'), SampleDependency)
     assert container.get('test2') == 'test'
     assert container.get('def') == 'something'
     assert container.get('def') == 'something'
     assert container.get('def') is container.get('def')
     assert container.get('test3') == 'some arg'
     assert len(container.instantiated) == 4
Beispiel #4
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 def test_prototype(self):
     container = IocContainer({
         'definitions': {
             'test': {
                 'item': 'tests.watson.di.support.SampleDependency',
                 'type': 'prototype'
             }
         }
     })
     test1 = container.get('test')
     test2 = container.get('test')
     assert test1 != test2
Beispiel #5
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    def container(self):
        """Returns the applications IocContainer.

        If no container has been created, a new container will be created
        based on the dependencies within the application configuration.
        """
        if not self._container:
            self.container = IocContainer(self.config['dependencies'])
        return self._container
Beispiel #6
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 def test_prototype_add(self):
     container = IocContainer()
     dep = SampleDependency()
     container.add('test', dep)
     assert container.get('test') == dep
     dep2 = SampleDependency()
     container.add('test', dep2)
     assert container.get('test') == dep2
Beispiel #7
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 def test_param_from_container(self):
     container = IocContainer({
         'params': {
             'test': 'sample2'
         },
         'definitions': {
             'sample': {
                 'item': 'tests.watson.di.support.SampleDependency',
                 'property': {
                     'test': 'test',
                     'test2': sample_dependency
                 }
             },
             'sample2': {
                 'item': 'tests.watson.di.support.sample_dependency'
             }
         }
     })
     sample = container.get('sample')
     assert sample
     assert sample.test
     assert sample.test2 == 'test'
Beispiel #8
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 def test_get_self_defined_object(self):
     container = IocContainer()
     obj = container.get('tests.watson.di.support.DependencyWithDefinition')
     assert obj.the_test() == 'test'
Beispiel #9
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 def test_attach_invalid_processor(self):
     with raises(TypeError):
         container = IocContainer()
         container.attach_processor('event.container.pre', 'test')
Beispiel #10
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 def test_module_not_exist(self):
     container = IocContainer()
     with raises(exceptions.NotFoundError):
         container.get('something.blah')
Beispiel #11
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 def test_module_not_exist(self):
     container = IocContainer()
     with raises(ImportError):
         container.get('something.blah')
Beispiel #12
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 def test_not_added(self):
     container = IocContainer()
     assert container.get('tests.watson.di.support.not_added') == 'not added'
Beispiel #13
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 def test_add_dict(self):
     container = IocContainer()
     dep = {'something': 'test'}
     container.add('dep', dep)
     assert container.get('dep') == dep
Beispiel #14
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 def test_add_instantiated(self):
     container = IocContainer()
     dep = SampleDependency()
     container.add('dep', dep)
     assert container.get('dep') == dep
Beispiel #15
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 def test_add_definition(self):
     container = IocContainer()
     container.add_definition('dep', {'item': lambda container: 'something'})
     assert container.get('dep') == 'something'
Beispiel #16
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 def test_get_failed_object(self):
     container = IocContainer()
     with raises(exceptions.NotFoundError):
         container.get('none')
         assert True
Beispiel #17
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class Base(ContainerAware, EventDispatcherAware, metaclass=abc.ABCMeta):
    """The core application structure for a Watson application.

    It makes heavy use of the IocContainer and EventDispatcher classes to handle
    the wiring and executing of methods.
    The default configuration for Watson applications can be seen at watson.mvc.config.
    """
    _config = None

    @property
    def config(self):
        """Returns the configuration of the application.
        """
        return self._config

    @config.setter
    def config(self, config):
        """Sets the configuration for the application.

        Usage:
            app = Base()
            app.config = {'some': 'settings'}

        Args:
            mixed config: The configuration to use.
        """
        if isinstance(config, ModuleType):
            conf = module_to_dict(config, '__')
        else:
            conf = config or {}
        self._config = dict_deep_update(module_to_dict(DefaultConfig, '__'), conf)
        self.container.add('application.config', self.config)

    @property
    def container(self):
        """Returns the applications IocContainer.

        If no container has been created, a new container will be created
        based on the dependencies within the application configuration.
        """
        if not self._container:
            self.container = IocContainer(self.config['dependencies'])
        return self._container

    @container.setter
    def container(self, container):
        """Sets the application IocContainer.

        Adds the application to the container, which can then be accessed via
        the 'application' key.
        """
        container.add('application', self)
        self._container = container

    def __init__(self, config=None):
        """Initializes the application.

        Registers any events that are within the application configuration.

        Usage:
            app = Base()

        Events:
            Dispatches the INIT.

        Args:
            mixed config: See the Base.config properties.
        """
        self.config = config or {}
        self.dispatcher = self.container.get('shared_event_dispatcher')
        for event, listeners in self.config['events'].items():
            for callback_priority_pair in listeners:
                try:
                    priority = callback_priority_pair.priority
                except:
                    priority = 1
                try:
                    once_only = callback_priority_pair.once_only
                except:
                    once_only = False
                self.dispatcher.add(event, self.container.get(callback_priority_pair[0]), priority, once_only)
        self.dispatcher.trigger(Event(events.INIT, target=self))
        super(Base, self).__init__()

    def __call__(self, *args, **kwargs):
        return self.run(*args, **kwargs)

    @abc.abstractmethod
    def run(self):
        raise NotImplementedError('You must implement __call__')  # pragma: no cover
class Base(ContainerAware, EventDispatcherAware, metaclass=abc.ABCMeta):

    """The core application structure for a Watson application.

    It makes heavy use of the IocContainer and EventDispatcher classes to handle
    the wiring and executing of methods.
    The default configuration for Watson applications can be seen at watson.framework.config.

    Attributes:
        _config (dict): The configuration for the application.
        global_app (Base): A reference to the currently running application.
    """
    _config = None
    global_app = None

    @property
    def config(self):
        """Returns the configuration of the application.
        """
        return self._config

    @config.setter
    def config(self, config):
        """Sets the configuration for the application.

        Example:

        .. code-block:: python

            app = Base()
            app.config = {'some': 'settings'}

        Args:
            config (mixed): The configuration to use.
        """
        if isinstance(config, ModuleType):
            conf = module_to_dict(config, '__')
        else:
            conf = config or {}
        self._config = dict_deep_update(
            module_to_dict(DefaultConfig, '__'), conf)
        self.container.add('application.config', self.config)

    @property
    def container(self):
        """Returns the applications IocContainer.

        If no container has been created, a new container will be created
        based on the dependencies within the application configuration.
        """
        if not self._container:
            self.container = IocContainer(self.config['dependencies'])
        return self._container

    @container.setter
    def container(self, container):
        """Sets the application IocContainer.

        Adds the application to the container, which can then be accessed via
        the 'application' key.
        """
        container.add('application', self)
        self._container = container

    def __init__(self, config=None):
        """Initializes the application.

        Registers any events that are within the application configuration.

        Example:

        .. code-block:: python

            app = Base()

        Events:
            Dispatches the INIT.

        Args:
            config (mixed): See the Base.config properties.
        """
        Base.global_app = self
        self.config = config or {}
        if not self.config.get('exceptions'):
            self.exception_class = ApplicationError
        else:
            self.exception_class = imports.load_definition_from_string(
                self.config['exceptions']['class'])
        self.register_events()
        self.trigger_init_event()
        super(Base, self).__init__()

    def trigger_init_event(self):
        """Execute any event listeners for the INIT event.
        """
        self.dispatcher.trigger(Event(events.INIT, target=self))

    def register_events(self):
        """Collect all the events from the app config and register
        them against the event dispatcher.
        """
        self.dispatcher = self.container.get('shared_event_dispatcher')
        for event, listeners in self.config['events'].items():
            for callback_priority_pair in listeners:
                try:
                    priority = callback_priority_pair[1]
                except:
                    priority = 1
                try:
                    once_only = callback_priority_pair[2]
                except:
                    once_only = False
                self.dispatcher.add(
                    event,
                    self.container.get(callback_priority_pair[0]),
                    priority,
                    once_only)

    def __call__(self, *args, **kwargs):
        return self.run(*args, **kwargs)

    @abc.abstractmethod
    def run(self):
        raise NotImplementedError('You must implement __call__')  # pragma: no cover
Beispiel #19
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 def test_attach_invalid_processor(self):
     container = IocContainer()
     container.attach_processor('event.container.pre', 'test')
Beispiel #20
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 def test_add_item(self):
     container = IocContainer()
     container.add('dep', lambda container: 'something')
     assert container.get('dep') == 'something'
Beispiel #21
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 def test_definition_doesnt_exist(self):
     container = IocContainer()
     container.get('test')