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import inspect |
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import pytest |
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4
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5
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@pytest.fixture |
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6
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def client_pandas_tabular_implementation(): |
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"""Client code that defines an Engine Backend""" |
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from so_magic.data.interfaces import TabularRetriever, TabularIterator, TabularMutator |
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9
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10
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class TestPDTabularRetrieverDelegate(TabularRetriever): |
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@classmethod |
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def column(cls, identifier, data): |
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return inspect.currentframe().f_code.co_name |
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def row(self, identifier, data): |
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return inspect.currentframe().f_code.co_name |
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@classmethod |
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def nb_columns(cls, data): |
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return inspect.currentframe().f_code.co_name |
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@classmethod |
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def nb_rows(cls, data): |
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return inspect.currentframe().f_code.co_name |
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@classmethod |
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def get_numerical_attributes(cls, data): |
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return inspect.currentframe().f_code.co_name |
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class TestPDTabularIteratorDelegate(TabularIterator): |
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def columnnames(self, data): |
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return inspect.currentframe().f_code.co_name |
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@classmethod |
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def iterrows(cls, data): |
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return inspect.currentframe().f_code.co_name |
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@classmethod |
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def itercolumns(cls, data): |
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return inspect.currentframe().f_code.co_name |
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class TestPDTabularMutatorDelegate(TabularMutator): |
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@classmethod |
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def add_column(cls, datapoints, values, new_attribute, **kwargs): |
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return inspect.currentframe().f_code.co_name |
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BACKEND = { |
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'backend_id': 'test-pd', |
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'backend_name': 'test-pandas', |
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'interfaces': [ |
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TestPDTabularRetrieverDelegate, |
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TestPDTabularIteratorDelegate, |
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TestPDTabularMutatorDelegate, |
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] |
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} |
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return BACKEND |
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63
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@pytest.fixture |
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def built_in_n_client_backends(built_in_backends, client_pandas_tabular_implementation): |
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CLIENT_BACKENDS = [ |
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client_pandas_tabular_implementation, |
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] |
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built_in_backends.add(*CLIENT_BACKENDS) |
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return built_in_backends |
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73
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def test_delegate_sanity_check(built_in_n_client_backends, tabular_operators, data_manager): |
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dt_manager = data_manager() |
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# assert that the data engine initial (default) backend is "pandas-backend" |
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# could need to change in the future if we give the client the option to initialize the engine with a backend of |
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# their preference |
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assert dt_manager.engine.backend.id == 'pd' |
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80
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for backend_id, implementations_data in built_in_n_client_backends: |
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dt_manager.engine.backend = built_in_n_client_backends.backends[backend_id] |
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assert dt_manager.engine.backend.id == backend_id |
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assert all(all(required_method_name in dir(implementations_data[operator_interface_name]) |
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for required_method_name in required_methods) |
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for operator_interface_name, required_methods in tabular_operators['required_methods']) |
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86
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87
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88
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def test_client_backend(built_in_n_client_backends, tabular_operators): |
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89
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90
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for operator_interface_name, required_methods in tabular_operators['required_methods']: |
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for m in required_methods: |
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nb_args = tabular_operators['get_nb_args'](operator_interface_name, m) |
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# we have to initialize an instance out of an operator class like we do in the 'observations_command' method in the Backend |
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# class (eg cls.retriever(), cls.iterator(), cls.mutator()) |
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assert getattr(built_in_n_client_backends.implementations['test-pd'][operator_interface_name](), m)(*list([None] * nb_args)) == m |
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97
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# assert all(getattr(built_in_n_client_backends.implementations['test-pd'][operator_interface_name], method)(None, None) == method for method in required_methods) |
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boromir674 /
so-magic
