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57 lines
2.1 KiB
Python
57 lines
2.1 KiB
Python
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# Copyright 2021 Collate
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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sql lineage utils tests
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"""
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from logging.config import DictConfigurator
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from unittest import TestCase
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from sqllineage.runner import LineageRunner
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from metadata.ingestion.lineage.sql_lineage import populate_column_lineage_map
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# Prevent sqllineage from modifying the logger config
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# Disable the DictConfigurator.configure method while importing LineageRunner
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configure = DictConfigurator.configure
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DictConfigurator.configure = lambda _: None
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# Reverting changes after import is done
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DictConfigurator.configure = configure
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QUERY = [
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"CREATE TABLE MYTABLE2 AS SELECT * FROM MYTABLE1;",
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"CREATE TABLE MYTABLE3 AS SELECT ID, NAME FROM MYTABLE1",
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"CREATE VIEW MYVIEW2 AS SELECT NAME, CITY FROM MYTABLE1;",
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"INSERT INTO MYTABLE5 SELECT ID, NAME, CITY FROM MYTABLE1;",
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]
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EXPECTED_LINEAGE_MAP = [
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{"<default>.mytable2": {"<default>.mytable1": [("*", "*")]}},
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{"<default>.mytable3": {"<default>.mytable1": [("ID", "ID"), ("NAME", "NAME")]}},
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{"<default>.myview2": {"<default>.mytable1": [("CITY", "CITY"), ("NAME", "NAME")]}},
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{
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"<default>.mytable5": {
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"<default>.mytable1": [("CITY", "CITY"), ("ID", "ID"), ("NAME", "NAME")]
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}
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},
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]
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class SqlLineageTest(TestCase):
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def test_populate_column_lineage_map(self):
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for i in range(len(QUERY)):
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result = LineageRunner(QUERY[i])
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raw_column_lineage = result.get_column_lineage()
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lineage_map = populate_column_lineage_map(raw_column_lineage)
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self.assertEqual(lineage_map, EXPECTED_LINEAGE_MAP[i])
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