def test_addition_to_system__entity_first(world, null_system):
entity = world.create_entity(NullComponent())
world._flush_component_updates()
world.add_system(null_system, 0)
assert entity in null_system.entities['null']
assert len(null_system.entries) == 1
assert null_system.entries[0] == (['null'], entity)
def test_add_component(world, entity):
component = NullComponent()
entity[NullComponent] = component
assert entity in world._addition_pool
with pytest.raises(KeyError):
entity[NullComponent]
world._flush_component_updates()
assert entity not in world._addition_pool
assert entity[NullComponent] is component
def test_remove_system(world, null_system):
entity = world.create_entity(NullComponent())
world._flush_component_updates()
world.add_system(null_system, 0)
world.remove_system(NullSystem)
assert null_system.entities['null'] == set()
assert len(null_system.exits) == 1
assert null_system.entries[0] == (['null'], entity)
assert world.systems == {}
assert not world.has_system(NullSystem)
def test_proxying_system__proxy_type(world):
class NonBareTypeProxy(ProxyingNullSystem):
proxies = {
'null_proxy': ProxyType(NullComponent),
}
system = NonBareTypeProxy()
world.add_system(system, 0)
entity = world.create_entity(NullComponent())
world._flush_component_updates()
assert entity in system.entities["null"]
assert len(system.entries) == 1
assert system.entries[0] == (['null'], entity)
def test_remove_component(world, entity):
component = NullComponent()
entity[NullComponent] = component
world._flush_component_updates()
del entity[NullComponent]
assert entity in world._removal_pool
assert entity[NullComponent] is component
world._flush_component_updates()
assert entity not in world._removal_pool
with pytest.raises(KeyError):
entity[NullComponent]
def test_bare_system(bare_null_world, bare_null_system):
entity = bare_null_world.create_entity(NullComponent())
bare_null_world._flush_component_updates()
assert entity in bare_null_system.entities["null"]
assert len(bare_null_system.entries) == 1
assert bare_null_system.entries[0] == (['null'], entity)