mirror of https://github.com/apache/superset.git
86 lines
3.6 KiB
Python
86 lines
3.6 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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from unittest import mock
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from sqlalchemy import column, literal_column
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from sqlalchemy.dialects import postgresql
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from superset.db_engine_specs.postgres import PostgresEngineSpec
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from tests.db_engine_specs.base_tests import DbEngineSpecTestCase
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class PostgresTests(DbEngineSpecTestCase):
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def test_get_table_names(self):
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""" Make sure postgres doesn't try to remove schema name from table name
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ie. when try_remove_schema_from_table_name == False. """
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inspector = mock.Mock()
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inspector.get_table_names = mock.Mock(return_value=["schema.table", "table_2"])
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inspector.get_foreign_table_names = mock.Mock(return_value=["table_3"])
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pg_result_expected = ["schema.table", "table_2", "table_3"]
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pg_result = PostgresEngineSpec.get_table_names(
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database=mock.ANY, schema="schema", inspector=inspector
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)
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self.assertListEqual(pg_result_expected, pg_result)
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def test_time_exp_literal_no_grain(self):
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col = literal_column("COALESCE(a, b)")
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expr = PostgresEngineSpec.get_timestamp_expr(col, None, None)
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result = str(expr.compile(None, dialect=postgresql.dialect()))
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self.assertEqual(result, "COALESCE(a, b)")
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def test_time_exp_literal_1y_grain(self):
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col = literal_column("COALESCE(a, b)")
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expr = PostgresEngineSpec.get_timestamp_expr(col, None, "P1Y")
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result = str(expr.compile(None, dialect=postgresql.dialect()))
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self.assertEqual(result, "DATE_TRUNC('year', COALESCE(a, b))")
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def test_time_ex_lowr_col_no_grain(self):
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col = column("lower_case")
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expr = PostgresEngineSpec.get_timestamp_expr(col, None, None)
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result = str(expr.compile(None, dialect=postgresql.dialect()))
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self.assertEqual(result, "lower_case")
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def test_time_exp_lowr_col_sec_1y(self):
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col = column("lower_case")
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expr = PostgresEngineSpec.get_timestamp_expr(col, "epoch_s", "P1Y")
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result = str(expr.compile(None, dialect=postgresql.dialect()))
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self.assertEqual(
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result,
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"DATE_TRUNC('year', "
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"(timestamp 'epoch' + lower_case * interval '1 second'))",
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)
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def test_time_exp_mixd_case_col_1y(self):
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col = column("MixedCase")
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expr = PostgresEngineSpec.get_timestamp_expr(col, None, "P1Y")
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result = str(expr.compile(None, dialect=postgresql.dialect()))
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self.assertEqual(result, "DATE_TRUNC('year', \"MixedCase\")")
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def test_convert_dttm(self):
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dttm = self.get_dttm()
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self.assertEqual(
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PostgresEngineSpec.convert_dttm("DATE", dttm),
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"TO_DATE('2019-01-02', 'YYYY-MM-DD')",
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)
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self.assertEqual(
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PostgresEngineSpec.convert_dttm("TIMESTAMP", dttm),
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"TO_TIMESTAMP('2019-01-02 03:04:05.678900', 'YYYY-MM-DD HH24:MI:SS.US')",
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)
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