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https://github.com/Infinidat/infi.clickhouse_orm.git
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160 lines
4.9 KiB
Python
160 lines
4.9 KiB
Python
import unittest
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from infi.clickhouse_orm.database import Database
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from infi.clickhouse_orm.models import Model
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from infi.clickhouse_orm.fields import *
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from infi.clickhouse_orm.engines import *
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from infi.clickhouse_orm.migrations import MigrationHistory
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# Add tests to path so that migrations will be importable
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import sys, os
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sys.path.append(os.path.dirname(__file__))
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try:
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Enum # exists in Python 3.4+
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except NameError:
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from enum import Enum # use the enum34 library instead
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import logging
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logging.basicConfig(level=logging.DEBUG, format='%(message)s')
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logging.getLogger("requests").setLevel(logging.WARNING)
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class MigrationsTestCase(unittest.TestCase):
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def setUp(self):
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self.database = Database('test-db')
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self.database.drop_table(MigrationHistory)
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def tearDown(self):
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self.database.drop_database()
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def tableExists(self, model_class):
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query = "EXISTS TABLE $db.`%s`" % model_class.table_name()
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return next(self.database.select(query)).result == 1
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def getTableFields(self, model_class):
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query = "DESC `%s`.`%s`" % (self.database.db_name, model_class.table_name())
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return [(row.name, row.type) for row in self.database.select(query)]
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def test_migrations(self):
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# Creation and deletion of table
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self.database.migrate('tests.sample_migrations', 1)
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self.assertTrue(self.tableExists(Model1))
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self.database.migrate('tests.sample_migrations', 2)
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self.assertFalse(self.tableExists(Model1))
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self.database.migrate('tests.sample_migrations', 3)
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self.assertTrue(self.tableExists(Model1))
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# Adding, removing and altering simple fields
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self.assertEquals(self.getTableFields(Model1), [('date', 'Date'), ('f1', 'Int32'), ('f2', 'String')])
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self.database.migrate('tests.sample_migrations', 4)
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self.assertEquals(self.getTableFields(Model2), [('date', 'Date'), ('f1', 'Int32'), ('f3', 'Float32'), ('f2', 'String'), ('f4', 'String')])
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self.database.migrate('tests.sample_migrations', 5)
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self.assertEquals(self.getTableFields(Model3), [('date', 'Date'), ('f1', 'Int64'), ('f3', 'Float64'), ('f4', 'String')])
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# Altering enum fields
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self.database.migrate('tests.sample_migrations', 6)
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self.assertTrue(self.tableExists(EnumModel1))
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self.assertEquals(self.getTableFields(EnumModel1),
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[('date', 'Date'), ('f1', "Enum8('dog' = 1, 'cat' = 2, 'cow' = 3)")])
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self.database.migrate('tests.sample_migrations', 7)
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self.assertTrue(self.tableExists(EnumModel1))
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self.assertEquals(self.getTableFields(EnumModel2),
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[('date', 'Date'), ('f1', "Enum16('dog' = 1, 'cat' = 2, 'horse' = 3, 'pig' = 4)")])
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self.database.migrate('tests.sample_migrations', 8)
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self.assertTrue(self.tableExists(MaterializedModel))
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self.assertEquals(self.getTableFields(MaterializedModel),
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[('date_time', "DateTime"), ('date', 'Date')])
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self.database.migrate('tests.sample_migrations', 9)
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self.assertTrue(self.tableExists(AliasModel))
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self.assertEquals(self.getTableFields(AliasModel),
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[('date', 'Date'), ('date_alias', "Date")])
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# Several different models with the same table name, to simulate a table that changes over time
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class Model1(Model):
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date = DateField()
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f1 = Int32Field()
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f2 = StringField()
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engine = MergeTree('date', ('date',))
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@classmethod
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def table_name(cls):
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return 'mig'
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class Model2(Model):
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date = DateField()
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f1 = Int32Field()
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f3 = Float32Field()
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f2 = StringField()
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f4 = StringField()
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engine = MergeTree('date', ('date',))
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@classmethod
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def table_name(cls):
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return 'mig'
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class Model3(Model):
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date = DateField()
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f1 = Int64Field() # changed from Int32
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f3 = Float64Field() # changed from Float32
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f4 = StringField()
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engine = MergeTree('date', ('date',))
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@classmethod
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def table_name(cls):
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return 'mig'
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class EnumModel1(Model):
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date = DateField()
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f1 = Enum8Field(Enum('SomeEnum1', 'dog cat cow'))
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engine = MergeTree('date', ('date',))
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@classmethod
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def table_name(cls):
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return 'enum_mig'
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class EnumModel2(Model):
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date = DateField()
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f1 = Enum16Field(Enum('SomeEnum2', 'dog cat horse pig')) # changed type and values
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engine = MergeTree('date', ('date',))
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@classmethod
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def table_name(cls):
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return 'enum_mig'
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class MaterializedModel(Model):
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date_time = DateTimeField()
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date = DateField(materialized='toDate(date_time)')
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engine = MergeTree('date', ('date',))
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@classmethod
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def table_name(cls):
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return 'materalized_date'
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class AliasModel(Model):
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date = DateField()
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date_alias = DateField(alias='date')
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engine = MergeTree('date', ('date',))
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@classmethod
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def table_name(cls):
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return 'alias_date' |