def test_does_not_inherit_default():
assert ChildMapper.default() != SpecificationMapper.default()
SpecificationMapper.default().define_specification_for('foo', const(1))
with pytest.raises(MissingSpecification):
ChildMapper.default().specification_for('foo')
def test_can_define_specifications_on_the_default():
sm = SpecificationMapper()
SpecificationMapper.default().define_specification_for('foo', const(1))
assert sm.specification_for('foo') == 1
def test_can_define_instance_specifications_on_the_default():
sm = SpecificationMapper()
SpecificationMapper.default().define_specification_for_instances(
str, lambda _, i: i + 'bar')
assert sm.specification_for('foo') == 'foobar'
def test_does_not_confuse_defaults():
x = SpecificationMapper.default()
assert Submapper.default() != x
