def test_namespaces():
ExecutionContext().install()
state_dict = {}
a = Field()
a.bind('x', a)
# Case: namespaces change the name of the Field
b = a.in_namespace('deeper')
assert a.name == 'x'
assert b.name == 'deeper-x'
# Case: namespaces can be nested
c = b.in_namespace('even')
assert c.name == 'even-deeper-x'
# Case: a Field *in* different namespace, but made from another share the same data
a.initial_value = EmptyStub()
a.input_status = EmptyStub()
a.validation_error = EmptyStub()
a.user_input = EmptyStub()
a.parsed_input = EmptyStub()
assert a.initial_value is b.initial_value is c.initial_value
assert a.input_status is b.input_status is c.input_status
assert a.validation_error is b.validation_error is c.validation_error
assert a.user_input is b.user_input is c.user_input
assert a.parsed_input is b.parsed_input is c.parsed_input
def test_global_state():
"""A Field can store its data in a global dict so that it can be recreated later with the same underlying data."""
ExecutionContext().install()
state_dict = {}
a = Field()
a.bind('x', a)
a.input_status = EmptyStub()
a.validation_error = EmptyStub()
a.user_input = EmptyStub()
a.parsed_input = EmptyStub()
a.activate_global_field_data_store(state_dict)
a.initial_value = EmptyStub()
b = Field()
b.bind('x', b)
assert a.initial_value is not b.initial_value
assert a.input_status is not b.input_status
assert a.validation_error is not b.validation_error
assert a.user_input is not b.user_input
assert a.parsed_input is not b.parsed_input
b.activate_global_field_data_store(state_dict)
assert a.initial_value is b.initial_value
assert a.input_status is b.input_status
assert a.validation_error is b.validation_error
assert a.user_input is b.user_input
assert a.parsed_input is b.parsed_input