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116 lines
4.6 KiB
Python
116 lines
4.6 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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import unittest
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from sqlalchemy.dialects import mysql
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from sqlalchemy.dialects.mysql import DATE, NVARCHAR, TEXT, VARCHAR
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from superset.db_engine_specs.mysql import MySQLEngineSpec
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from superset.utils.core import GenericDataType
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from tests.db_engine_specs.base_tests import TestDbEngineSpec
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class TestMySQLEngineSpecsDbEngineSpec(TestDbEngineSpec):
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@unittest.skipUnless(
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TestDbEngineSpec.is_module_installed("MySQLdb"), "mysqlclient not installed"
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)
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def test_get_datatype_mysql(self):
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"""Tests related to datatype mapping for MySQL"""
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self.assertEqual("TINY", MySQLEngineSpec.get_datatype(1))
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self.assertEqual("VARCHAR", MySQLEngineSpec.get_datatype(15))
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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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MySQLEngineSpec.convert_dttm("DATE", dttm),
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"STR_TO_DATE('2019-01-02', '%Y-%m-%d')",
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)
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self.assertEqual(
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MySQLEngineSpec.convert_dttm("DATETIME", dttm),
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"STR_TO_DATE('2019-01-02 03:04:05.678900', '%Y-%m-%d %H:%i:%s.%f')",
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)
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def test_column_datatype_to_string(self):
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test_cases = (
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(DATE(), "DATE"),
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(VARCHAR(length=255), "VARCHAR(255)"),
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(
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VARCHAR(length=255, charset="latin1", collation="utf8mb4_general_ci"),
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"VARCHAR(255)",
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),
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(NVARCHAR(length=128), "NATIONAL VARCHAR(128)"),
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(TEXT(), "TEXT"),
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)
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for original, expected in test_cases:
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actual = MySQLEngineSpec.column_datatype_to_string(
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original, mysql.dialect()
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)
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self.assertEqual(actual, expected)
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def test_is_db_column_type_match(self):
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type_expectations = (
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# Numeric
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("TINYINT", GenericDataType.NUMERIC),
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("SMALLINT", GenericDataType.NUMERIC),
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("MEDIUMINT", GenericDataType.NUMERIC),
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("INT", GenericDataType.NUMERIC),
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("BIGINT", GenericDataType.NUMERIC),
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("DECIMAL", GenericDataType.NUMERIC),
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("FLOAT", GenericDataType.NUMERIC),
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("DOUBLE", GenericDataType.NUMERIC),
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("BIT", GenericDataType.NUMERIC),
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# String
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("CHAR", GenericDataType.STRING),
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("VARCHAR", GenericDataType.STRING),
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("TINYTEXT", GenericDataType.STRING),
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("MEDIUMTEXT", GenericDataType.STRING),
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("LONGTEXT", GenericDataType.STRING),
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# Temporal
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("DATE", GenericDataType.TEMPORAL),
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("DATETIME", GenericDataType.TEMPORAL),
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("TIMESTAMP", GenericDataType.TEMPORAL),
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("TIME", GenericDataType.TEMPORAL),
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)
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for type_expectation in type_expectations:
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type_str = type_expectation[0]
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col_type = type_expectation[1]
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assert MySQLEngineSpec.is_db_column_type_match(
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type_str, GenericDataType.NUMERIC
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) is (col_type == GenericDataType.NUMERIC)
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assert MySQLEngineSpec.is_db_column_type_match(
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type_str, GenericDataType.STRING
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) is (col_type == GenericDataType.STRING)
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assert MySQLEngineSpec.is_db_column_type_match(
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type_str, GenericDataType.TEMPORAL
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) is (col_type == GenericDataType.TEMPORAL)
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def test_extract_error_message(self):
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from MySQLdb._exceptions import OperationalError
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message = "Unknown table 'BIRTH_NAMES1' in information_schema"
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exception = OperationalError(message)
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extracted_message = MySQLEngineSpec._extract_error_message(exception)
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assert extracted_message == message
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exception = OperationalError(123, message)
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extracted_message = MySQLEngineSpec._extract_error_message(exception)
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assert extracted_message == message
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