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147 lines
4.3 KiB
Python
147 lines
4.3 KiB
Python
# This file is part of beets.
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# Copyright 2014, Adrian Sampson.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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"""Tests for non-query database functions of Item.
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"""
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import os
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import sqlite3
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import _common
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from beets import dbcore
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# Fixture: concrete database and model classes. For migration tests, we
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# have multiple models with different numbers of fields.
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class TestModel1(dbcore.Model):
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_table = 'test'
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_flex_table = 'testflex'
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_fields = {
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'field_one': dbcore.Type(int, 'INTEGER'),
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}
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@classmethod
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def _getters(cls):
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return {}
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def _template_funcs(self):
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return {}
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class TestDatabase1(dbcore.Database):
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_models = (TestModel1,)
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pass
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class TestModel2(TestModel1):
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_fields = {
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'field_one': dbcore.Type(int, 'INTEGER'),
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'field_two': dbcore.Type(int, 'INTEGER'),
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}
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class TestDatabase2(dbcore.Database):
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_models = (TestModel2,)
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pass
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class TestModel3(TestModel1):
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_fields = {
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'field_one': dbcore.Type(int, 'INTEGER'),
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'field_two': dbcore.Type(int, 'INTEGER'),
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'field_three': dbcore.Type(int, 'INTEGER'),
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}
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class TestDatabase3(dbcore.Database):
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_models = (TestModel3,)
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pass
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class TestModel4(TestModel1):
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_fields = {
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'field_one': dbcore.Type(int, 'INTEGER'),
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'field_two': dbcore.Type(int, 'INTEGER'),
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'field_three': dbcore.Type(int, 'INTEGER'),
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'field_four': dbcore.Type(int, 'INTEGER'),
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}
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class TestDatabase4(dbcore.Database):
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_models = (TestModel4,)
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pass
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class AnotherTestModel(TestModel1):
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_table = 'another'
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_flex_table = 'anotherflex'
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_fields = {
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'foo': dbcore.Type(int, 'INTEGER'),
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}
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class TestDatabaseTwoModels(dbcore.Database):
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_models = (TestModel2, AnotherTestModel)
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pass
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TEMP_LIB = os.path.join(_common.RSRC, 'test_copy.blb')
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class MigrationTest(_common.TestCase):
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"""Tests the ability to change the database schema between
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versions.
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"""
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def setUp(self):
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super(MigrationTest, self).setUp()
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# Set up a database with the two-field schema.
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self.libfile = os.path.join(_common.RSRC, 'temp.db')
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old_lib = TestDatabase2(self.libfile)
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# Add an item to the old library.
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old_lib._connection().execute(
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'insert into test (field_one, field_two) values (4, 2)'
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)
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old_lib._connection().commit()
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del old_lib
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def tearDown(self):
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super(MigrationTest, self).tearDown()
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os.unlink(self.libfile)
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def test_open_with_same_fields_leaves_untouched(self):
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new_lib = TestDatabase2(self.libfile)
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c = new_lib._connection().cursor()
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c.execute("select * from test")
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row = c.fetchone()
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self.assertEqual(len(row.keys()), 2)
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def test_open_with_new_field_adds_column(self):
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new_lib = TestDatabase3(self.libfile)
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c = new_lib._connection().cursor()
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c.execute("select * from test")
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row = c.fetchone()
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self.assertEqual(len(row.keys()), 3)
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def test_open_with_fewer_fields_leaves_untouched(self):
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new_lib = TestDatabase1(self.libfile)
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c = new_lib._connection().cursor()
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c.execute("select * from test")
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row = c.fetchone()
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self.assertEqual(len(row.keys()), 2)
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def test_open_with_multiple_new_fields(self):
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new_lib = TestDatabase4(self.libfile)
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c = new_lib._connection().cursor()
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c.execute("select * from test")
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row = c.fetchone()
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self.assertEqual(len(row.keys()), 4)
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def test_extra_model_adds_table(self):
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new_lib = TestDatabaseTwoModels(self.libfile)
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try:
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new_lib._connection().execute("select * from another")
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except sqlite3.OperationalError:
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self.fail("select failed")
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