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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os
from sqlalchemy import *
from migrate.exceptions import MigrateDeprecationWarning
from migrate.tests import fixture
from migrate.tests.fixture.warnings import catch_warnings
from migrate.versioning.util import *
import warnings
class TestUtil(fixture.Pathed):
def test_construct_engine(self):
"""Construct engine the smart way"""
url = 'sqlite://'
engine = construct_engine(url)
self.assert_(engine.name == 'sqlite')
# keyword arg
engine = construct_engine(url, engine_arg_encoding='utf-8')
self.assertEquals(engine.dialect.encoding, 'utf-8')
# dict
engine = construct_engine(url, engine_dict={'encoding': 'utf-8'})
self.assertEquals(engine.dialect.encoding, 'utf-8')
# engine parameter
engine_orig = create_engine('sqlite://')
engine = construct_engine(engine_orig)
self.assertEqual(engine, engine_orig)
# test precedance
engine = construct_engine(url, engine_dict={'encoding': 'iso-8859-1'},
engine_arg_encoding='utf-8')
self.assertEquals(engine.dialect.encoding, 'utf-8')
# deprecated echo=True parameter
try:
# py 2.4 compatability :-/
cw = catch_warnings(record=True)
w = cw.__enter__()
warnings.simplefilter("always")
engine = construct_engine(url, echo='True')
self.assertTrue(engine.echo)
self.assertEqual(len(w),1)
self.assertTrue(issubclass(w[-1].category,
MigrateDeprecationWarning))
self.assertEqual(
'echo=True parameter is deprecated, pass '
'engine_arg_echo=True or engine_dict={"echo": True}',
str(w[-1].message))
finally:
cw.__exit__()
# unsupported argument
self.assertRaises(ValueError, construct_engine, 1)
def test_asbool(self):
"""test asbool parsing"""
result = asbool(True)
self.assertEqual(result, True)
result = asbool(False)
self.assertEqual(result, False)
result = asbool('y')
self.assertEqual(result, True)
result = asbool('n')
self.assertEqual(result, False)
self.assertRaises(ValueError, asbool, 'test')
self.assertRaises(ValueError, asbool, object)
def test_load_model(self):
"""load model from dotted name"""
model_path = os.path.join(self.temp_usable_dir, 'test_load_model.py')
f = open(model_path, 'w')
f.write("class FakeFloat(int): pass")
f.close()
try:
# py 2.4 compatability :-/
cw = catch_warnings(record=True)
w = cw.__enter__()
warnings.simplefilter("always")
# deprecated spelling
FakeFloat = load_model('test_load_model.FakeFloat')
self.assert_(isinstance(FakeFloat(), int))
self.assertEqual(len(w),1)
self.assertTrue(issubclass(w[-1].category,
MigrateDeprecationWarning))
self.assertEqual(
'model should be in form of module.model:User '
'and not module.model.User',
str(w[-1].message))
finally:
cw.__exit__()
FakeFloat = load_model('test_load_model:FakeFloat')
self.assert_(isinstance(FakeFloat(), int))
FakeFloat = load_model(FakeFloat)
self.assert_(isinstance(FakeFloat(), int))
def test_guess_obj_type(self):
"""guess object type from string"""
result = guess_obj_type('7')
self.assertEqual(result, 7)
result = guess_obj_type('y')
self.assertEqual(result, True)
result = guess_obj_type('test')
self.assertEqual(result, 'test')
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