def test_name_adapter_add():
adapter = packages_model.NameAdapter()
adapter.add(column_header="Title Page", data_entry="title_page")
assert len(adapter) == 1
def test_name_adapter_get_data_entry_from_column():
adapter = packages_model.NameAdapter()
adapter.add(column_header="Title Page", data_entry="title_page")
assert adapter.get_data_entry(column_header="Title Page") == "title_page"
def test_name_adapter_empty_len():
adapter = packages_model.NameAdapter()
assert len(adapter) == 0
def test_multiple_mappings_error():
adapter = packages_model.NameAdapter()
adapter.add(column_header="Title Page", data_entry="title_page")
with pytest.raises(AttributeError):
adapter.add(column_header="Title Page", data_entry="something_else")