# -*- coding: utf-8 -*- # Copyright (c) 2010 Mark Sandstrom # Copyright (c) 2011-2015 Raphaël Barrois # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to deal # in the Software without restriction, including without limitation the rights # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell # copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN # THE SOFTWARE. from factory import base from factory import containers from factory import declarations from factory import errors from .compat import unittest class LazyStubTestCase(unittest.TestCase): def test_basic(self): stub = containers.LazyStub({'one': 1, 'two': 2}) self.assertEqual({'one': 1, 'two': 2}, stub.__fill__()) def test_setting_values(self): stub = containers.LazyStub({'one': 1, 'two': 2}) self.assertRaises(AttributeError, setattr, stub, 'one', 1) def test_reading_value(self): stub = containers.LazyStub({'one': 1, 'two': 2}) self.assertEqual(1, stub.one) self.assertRaises(AttributeError, getattr, stub, 'three') def test_accessing_container(self): class LazyAttr(containers.LazyValue): def __init__(self, obj_attr, container_attr): self.obj_attr = obj_attr self.container_attr = container_attr def evaluate(self, obj, containers=()): if containers: add = getattr(containers[0], self.container_attr) else: add = 0 return getattr(obj, self.obj_attr) + add class DummyContainer(object): three = 3 stub = containers.LazyStub({'one': LazyAttr('two', 'three'), 'two': 2, 'three': 42}, containers=(DummyContainer(),)) self.assertEqual(5, stub.one) stub = containers.LazyStub({'one': LazyAttr('two', 'three'), 'two': 2, 'three': 42}, containers=()) self.assertEqual(2, stub.one) def test_access_parent(self): """Test simple access to a stub' parent.""" o1 = containers.LazyStub({'rank': 1}) o2 = containers.LazyStub({'rank': 2}, (o1,)) stub = containers.LazyStub({'rank': 3}, (o2, o1)) self.assertEqual(3, stub.rank) self.assertEqual(2, stub.factory_parent.rank) self.assertEqual(1, stub.factory_parent.factory_parent.rank) class LazyAttr(containers.LazyValue): def __init__(self, attrname): self.attrname = attrname def evaluate(self, obj, container=None): return 1 + getattr(obj, self.attrname) def test_cyclic_definition(self): stub = containers.LazyStub({ 'one': self.LazyAttr('two'), 'two': self.LazyAttr('one'), }) self.assertRaises(errors.CyclicDefinitionError, getattr, stub, 'one') def test_cyclic_definition_rescue(self): class LazyAttrDefault(self.LazyAttr): def __init__(self, attname, defvalue): super(LazyAttrDefault, self).__init__(attname) self.defvalue = defvalue def evaluate(self, obj, container=None): try: return super(LazyAttrDefault, self).evaluate(obj, container) except errors.CyclicDefinitionError: return self.defvalue stub = containers.LazyStub({ 'one': LazyAttrDefault('two', 10), 'two': self.LazyAttr('one'), }) self.assertEqual(10, stub.one) self.assertEqual(11, stub.two) def test_representation(self): class RandomObj(object): pass stub = containers.LazyStub({'one': 1, 'two': 2}, model_class=RandomObj) self.assertIn('RandomObj', repr(stub)) self.assertIn('RandomObj', str(stub)) self.assertIn('one', str(stub)) class AttributeBuilderTestCase(unittest.TestCase): def make_fake_factory(self, decls): class Meta: declarations = decls parameters = {} parameters_dependencies = {} class FakeFactory(object): _meta = Meta @classmethod def _generate_next_sequence(cls): return 1 return FakeFactory def test_empty(self): """Tests building attributes from an empty definition.""" FakeFactory = self.make_fake_factory({}) ab = containers.AttributeBuilder(FakeFactory) self.assertEqual({}, ab.build(create=False)) def test_factory_defined(self): FakeFactory = self.make_fake_factory({'one': 1}) ab = containers.AttributeBuilder(FakeFactory) self.assertEqual({'one': 1}, ab.build(create=False)) def test_extended(self): FakeFactory = self.make_fake_factory({'one': 1}) ab = containers.AttributeBuilder(FakeFactory, {'two': 2}) self.assertEqual({'one': 1, 'two': 2}, ab.build(create=False)) def test_overridden(self): FakeFactory = self.make_fake_factory({'one': 1}) ab = containers.AttributeBuilder(FakeFactory, {'one': 2}) self.assertEqual({'one': 2}, ab.build(create=False)) def test_factory_defined_sequence(self): seq = declarations.Sequence(lambda n: 'xx%d' % n) FakeFactory = self.make_fake_factory({'one': seq}) ab = containers.AttributeBuilder(FakeFactory) self.assertEqual({'one': 'xx1'}, ab.build(create=False)) def test_additionnal_sequence(self): seq = declarations.Sequence(lambda n: 'xx%d' % n) FakeFactory = self.make_fake_factory({'one': 1}) ab = containers.AttributeBuilder(FakeFactory, extra={'two': seq}) self.assertEqual({'one': 1, 'two': 'xx1'}, ab.build(create=False)) def test_replaced_sequence(self): seq = declarations.Sequence(lambda n: 'xx%d' % n) seq2 = declarations.Sequence(lambda n: 'yy%d' % n) FakeFactory = self.make_fake_factory({'one': seq}) ab = containers.AttributeBuilder(FakeFactory, extra={'one': seq2}) self.assertEqual({'one': 'yy1'}, ab.build(create=False)) def test_lazy_function(self): lf = declarations.LazyFunction(int) FakeFactory = self.make_fake_factory({'one': 1, 'two': lf}) ab = containers.AttributeBuilder(FakeFactory) self.assertEqual({'one': 1, 'two': 0}, ab.build(create=False)) ab = containers.AttributeBuilder(FakeFactory, {'one': 4}) self.assertEqual({'one': 4, 'two': 0}, ab.build(create=False)) ab = containers.AttributeBuilder(FakeFactory, {'one': 4, 'three': lf}) self.assertEqual({'one': 4, 'two': 0, 'three': 0}, ab.build(create=False)) def test_lazy_attribute(self): la = declarations.LazyAttribute(lambda a: a.one * 2) FakeFactory = self.make_fake_factory({'one': 1, 'two': la}) ab = containers.AttributeBuilder(FakeFactory) self.assertEqual({'one': 1, 'two': 2}, ab.build(create=False)) ab = containers.AttributeBuilder(FakeFactory, {'one': 4}) self.assertEqual({'one': 4, 'two': 8}, ab.build(create=False)) ab = containers.AttributeBuilder(FakeFactory, {'one': 4, 'three': la}) self.assertEqual({'one': 4, 'two': 8, 'three': 8}, ab.build(create=False)) def test_subfields(self): class FakeInnerFactory(object): pass sf = declarations.SubFactory(FakeInnerFactory) FakeFactory = self.make_fake_factory({'one': sf, 'two': 2}) ab = containers.AttributeBuilder(FakeFactory, {'one__blah': 1, 'two__bar': 2}) self.assertTrue(ab.has_subfields(sf)) self.assertEqual(['one'], list(ab._subfields.keys())) self.assertEqual(2, ab._declarations['two__bar']) def test_sub_factory(self): pass if __name__ == '__main__': # pragma: no cover unittest.main()