    def test_data_collection_filter_lambda(self):
        """
        target: test filter() API for DataCollection 
        method: create a data collection and filter data with lambda
        expected: return filter successfully
        """
        size = 5
        dc = DataCollection.range(size)
        dc = dc.filter(lambda x: x+1)
        result = dc.to_list()
        assert len(result) == size

        return True
target: test filter() API for DataCollection
method: create a data collection and filter data with lambda
expected: return filter successfully
tests/testcases/test_data_collection.py