def test_init_when_unstructured():
data = "this is an unstructured text string"
ds = DataSource(data)
assert isinstance(ds, UnstructuredDataSource)
assert ds.get_data() == data
assert not ds.structured
assert ds.name == "string with hash 9ec30fc91f18445a44b9e9c2820d388d"
def test_init_when_structured():
data = get_sample_directory_df()
ds = DataSource(data)
assert isinstance(ds, StructuredDataSource)
assert list(ds.get_data().values) == list(data.values)
assert ds.structured
assert ds.name == "pandas DataFrame (hash 7383002750474244645)"
def test_get_relations_when_not_map_by_name():
source = DataSource("src/tests/test_data/sample/names.csv")
target = DataSource("src/tests/test_data/sample/employees.xml")
crm = ColumnRelationBuilder(source, target)
mapping_configuration = Mock()
mapping_configuration.get_map_by_type.return_value = "test"
with pytest.raises(NotImplementedError):
crm.get_relations(mapping_configuration)
def test_get_relations_by_name():
source = DataSource("src/tests/test_data/sample/names.csv")
target = DataSource("src/tests/test_data/sample/names.csv")
crm = ColumnRelationBuilder(source, target)
relations = crm._get_relations_by_name(test_mapping_config)
print(relations)
assert len(relations) == 1
assert relations[0].target_data_source == target
assert relations[0].source_column_name == "name"
assert relations[0].target_column_name == "name"
assert relations[0].confidence == 1.0
def test_get_relations_when_map_by_name():
source = DataSource("src/tests/test_data/sample/names.csv")
target = DataSource("src/tests/test_data/sample/employees.xml")
crm = ColumnRelationBuilder(source, target)
mapping_configuration = Mock()
mapping_configuration.get_map_by_type.return_value = "name"
crm._get_relations_by_name = Mock()
crm.get_relations(mapping_configuration)
assert mapping_configuration.get_map_by_type.call_count == 1
assert crm._get_relations_by_name.call_count == 1
crm._get_relations_by_name.assert_called_with(mapping_configuration)
def test_build_relations_from_matches_when_above_threshold():
source = DataSource("src/tests/test_data/sample/names.csv")
target = DataSource("src/tests/test_data/sample/employees.xml")
crm = ColumnRelationBuilder(source, target)
relations = crm._build_relations_from_matches("SOURCETEST", [test_match],
0.1)
assert len(relations) == 1
assert relations[0].target_data_source == target
assert relations[0].source_column_name == "SOURCETEST"
assert relations[0].target_column_name == "TEST"
assert relations[0].confidence == 0.1234
def test_relate_columns_to():
ds_source = DataSource("src/tests/test_data/sample/names.csv")
ds_target = DataSource("src/tests/test_data/sample/names.csv")
matching_config = ValueMatchingConfiguration(model_type="exact")
ds_source.relate_columns_to(ds_target,
mapping_configuration=matching_config)
assert len(ds_source.column_relations) == 1
assert ds_source.column_relations[0].target_data_source == ds_target
assert ds_source.column_relations[0].source_column_name == "name"
assert ds_source.column_relations[0].target_column_name == "name"
assert ds_source.column_relations[0].confidence == 1.0
def append(self, *args, **kwargs):
"""Append a new data source to this collection by specifying DataSource args."""
if len(args) == 0:
raise Exception("Must specify a valid input to append.")
elif os.path.isdir(args[0]):
file_list = self._construct_filelist(*args, **kwargs)
for file_name in file_list:
try:
self.sources.append(DataSource(file_name))
except NotImplementedError:
self.unreadable_sources.append(file_name)
else:
self.sources.append(DataSource(*args, **kwargs))
def test_map_rows_to():
ds_source = DataSource("src/tests/test_data/sample/names.csv")
ds_target = DataSource("src/tests/test_data/sample/names.csv")
ds_source.create_column_relation("name", "name", ds_target)
value_matching_config = ValueMatchingConfiguration(model_type="exact")
row_mapping_config = RowMappingConfiguration(model_type="weighted_linear",
weights={"name": 1})
ds_source.map_rows_to(ds_target, value_matching_config, row_mapping_config)
assert len(
ds_source.row_relations) == 252 # Duplicate record present, hence +2
def get_no_middle_source():
source_no_middle_dict = copy.deepcopy(source_dict)
del source_no_middle_dict["MIDDLE_NAME"]
source_no_middle_df = pd.DataFrame(source_no_middle_dict)
return DataSource(source_no_middle_df)
def get_source():
source_df = pd.DataFrame(source_dict)
return DataSource(source_df)
def get_golden_source():
return DataSource("src/tests/test_data/table/person_base.tsv")
def test_build_relations_from_matches_when_under_threshold():
source = DataSource("src/tests/test_data/sample/names.csv")
target = DataSource("src/tests/test_data/sample/employees.xml")
crm = ColumnRelationBuilder(source, target)
assert crm._build_relations_from_matches("SOURCETEST", [test_match],
0.5) == []
def test_init_when_target_unstructured():
source = DataSource("src/tests/test_data/sample/names.csv")
target = DataSource("src/tests/test_data/sample/email.txt")
with pytest.raises(TypeError):
crm = ColumnRelationBuilder(source, target)
def test_init_when_source_and_target_structured():
source = DataSource("src/tests/test_data/sample/names.csv")
target = DataSource("src/tests/test_data/sample/employees.xml")
crb = ColumnRelationBuilder(source, target)
assert crb.source == source
assert crb.target == target
def test_describe_row_relation_for_index():
ds_source = DataSource("src/tests/test_data/sample/names.csv")
ds_target = DataSource("src/tests/test_data/sample/names.csv")
ds_source.create_column_relation("name", "name", ds_target)
description = ds_source.describe_row_relation_for_index(0)
assert description == '{"name": "Soo Hong"}'