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unit.rs
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371 lines (319 loc) · 11.4 KB
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//! Unit testing framework.
use feather_core::anvil::entity::{AnimalData, BaseEntityData};
use feather_core::anvil::player::PlayerData;
use feather_core::network::{cast_packet, Packet};
use feather_core::{
chunk::Chunk,
chunk_map::ChunkMap,
util::{vec3, ChunkPosition, Position},
};
use feather_server_chunk::{
chunk_worker, hold_chunk_request, release_chunk_request, ChunkWorkerHandle,
};
use feather_server_network::NewClientInfo;
use feather_server_player::on_chunk_cross_update_chunks;
use feather_server_types::{
ChunkCrossEvent, ChunkHolder, Game, Name, NetworkId, ServerToWorkerMessage, Shared, Uuid,
WorkerToServerMessage,
};
use feather_server_util::on_chunk_cross_update_chunk_entities;
use fecs::{
Entity, EntityBuilder, Event, EventHandlers, Executor, OwnedResources, RawEventHandler,
RawSystem, RefResources, ResourcesEnum, ResourcesProvider, World,
};
use std::any::Any;
use std::borrow::Cow;
use std::collections::HashMap;
use std::net::{IpAddr, SocketAddr};
use std::ops::Deref;
use std::sync::{Arc, Mutex};
struct TrackedPlayer {
/// IO worker-side receiver
worker_rx: Mutex<flume::Receiver<ServerToWorkerMessage>>,
_worker_tx: flume::Sender<WorkerToServerMessage>,
buffered_sent_packets: Vec<Box<dyn Packet>>,
disconnected: bool,
}
pub struct Test {
pub game: Game,
pub world: World,
pub cworker_tester: ChunkWorkerTester,
players: HashMap<Entity, TrackedPlayer>,
}
impl Default for Test {
fn default() -> Self {
Self::new()
}
}
impl Test {
/// Starts a new `Test`.
pub fn new() -> Self {
let (cworker_tester, cworker_handle) = ChunkWorkerTester::new();
let mut world = World::new();
let game = Self::create_game(cworker_handle, &mut world);
Self {
game,
world,
cworker_tester,
players: HashMap::new(),
}
}
fn create_game(cworker_handle: ChunkWorkerHandle, world: &mut World) -> Game {
let mut resources = OwnedResources::new();
let mut event_handlers = EventHandlers::new()
.with(hold_chunk_request)
.with(release_chunk_request);
event_handlers.set_up(&mut resources, world);
let mut chunk_map = ChunkMap::new();
for x in -1..=1 {
for z in -1..=1 {
chunk_map.insert(Chunk::new(ChunkPosition::new(x, z)));
}
}
let mut game = Game {
chunk_map,
tick_count: 0,
chunk_holders: Default::default(),
level: Default::default(),
chunk_entities: Default::default(),
block_entities: Default::default(),
time: Default::default(),
event_handlers: Arc::new(event_handlers),
resources: Arc::new(Default::default()),
bump: Default::default(),
shared: Arc::new(Shared {
config: Arc::new(Default::default()),
rng: Default::default(),
player_count: Arc::new(Default::default()),
}),
game_rules: Default::default(),
};
resources.insert(cworker_handle);
let resources = Arc::new(resources);
game.resources = resources;
game
}
/// Adds a resource into the resource set.
pub fn with_resource(mut self, resource: impl Any + Send + Sync) -> Self {
let resources = Arc::get_mut(&mut self.game.resources).expect("resources already borrowed");
resources.insert(resource);
self
}
/// Runs a system for this `Test`.
pub fn run(&mut self, mut system: impl RawSystem) -> &mut Self {
system.set_up(
Arc::get_mut(&mut self.game.resources).expect("resources already borrowed"),
&mut self.world,
);
self.exec_with_resources(move |world, resources| {
system.run(resources, world, &Executor::new())
});
self
}
/// Handles an event with the given handler.
pub fn handle<E>(&mut self, event: E, mut handler: impl RawEventHandler<Event = E>) -> &mut Self
where
E: Event,
{
handler.set_up(
Arc::get_mut(&mut self.game.resources).expect("resources already borrowed"),
&mut self.world,
);
self.exec_with_resources(move |world, resources| handler.handle(resources, world, &event));
self
}
fn exec_with_resources(&mut self, f: impl FnOnce(&mut World, &ResourcesEnum)) {
f(
&mut self.world,
&RefResources::new(Arc::clone(&self.game.resources).deref(), (&mut self.game,))
.as_resources_ref(),
);
}
/// Executes a closure with access to `self`.
pub fn exec(&mut self, f: impl FnOnce(&mut Self)) -> &mut Self {
f(self);
self
}
/// Runs a broadcast test routine. This:
/// * Creates three players, two of whom are able to see each other
/// * Calls `event` to trigger an event for the first player
/// * Asserts that no packet was sent to the third player, who is too far away
/// * Asserts that packet of type `P` was sent to the second player, returning it
pub fn broadcast_routine<P, E, F, H>(
&mut self,
event: F,
handler: H,
send_to_self: bool,
) -> (P, Entity)
where
E: Event,
P: Packet,
F: FnOnce(&mut Self, Entity, Entity) -> E,
H: RawEventHandler<Event = E>,
{
use feather_core::position;
let player1 = self.player("", position!(0.0, 64.0, 0.0));
let player2 = self.player("", position!(45.0, 1000.0, -37.9));
let player3 = self.player("", position!(1000.0, -450.0, 100.0));
let event = event(self, player1, player2);
self.handle(event, handler);
if !send_to_self {
assert!(self.sent::<P>(player1).is_none());
}
assert!(self.sent::<P>(player3).is_none());
(self.sent::<P>(player2).unwrap(), player1)
}
/// Creates a dummy player with the given name.
pub fn player(&mut self, name: impl Into<Cow<'static, str>>, position: Position) -> Entity {
let mut name = name.into();
let (server_tx, worker_rx) = flume::unbounded();
let (worker_tx, server_rx) = flume::unbounded();
let entity = EntityBuilder::new().build().spawn_in(&mut self.world);
let info = NewClientInfo {
ip: SocketAddr::new(IpAddr::from([0, 0, 0, 1]), 25565),
username: name.to_mut().to_owned(),
profile: vec![],
uuid: Uuid::new_v4(),
data: PlayerData {
animal: AnimalData::new(BaseEntityData::new(position, vec3(0.0, 0.0, 0.0)), 20.0),
gamemode: 1,
inventory: vec![],
held_item: 0,
},
position,
sender: server_tx,
receiver: server_rx,
entity,
};
feather_server_player::create(&mut self.game, &mut self.world, info);
self.players.insert(
entity,
TrackedPlayer {
worker_rx: Mutex::new(worker_rx),
_worker_tx: worker_tx,
buffered_sent_packets: vec![],
disconnected: false,
},
);
self.update_structures(entity, None, position);
entity
}
/// Adds an entity with the given name and components.
pub fn entity(&mut self, builder: EntityBuilder) -> Entity {
let entity = builder.build().spawn_in(&mut self.world);
if let Some(pos) = self.world.try_get::<Position>(entity).map(|r| *r) {
self.update_structures(entity, None, pos);
}
entity
}
/// Sets the position of an entity.
pub fn position(&mut self, entity: Entity, pos: Position) -> &mut Self {
let old = *self.world.get::<Position>(entity);
*self.world.get_mut::<Position>(entity) = pos;
self.update_structures(entity, Some(old), pos);
self
}
/// Returns the network ID of an entity.
pub fn id(&self, entity: Entity) -> i32 {
self.world.get::<NetworkId>(entity).0
}
/// Returns the UUID of an entity.
pub fn uuid(&self, entity: Entity) -> Uuid {
*self.world.get::<Uuid>(entity)
}
/// Returns the packet of type `P` sent to `player`.
pub fn sent<P>(&mut self, player: Entity) -> Option<P>
where
P: Packet,
{
let tracked = self.tracked_player(player);
Self::update_player(tracked);
Self::remove_player_buffered_packet(tracked)
}
fn remove_player_buffered_packet<P>(player: &mut TrackedPlayer) -> Option<P>
where
P: Packet,
{
let index = player
.buffered_sent_packets
.iter()
.position(|p| Box::deref(p).as_any().downcast_ref::<P>().is_some());
index.map(|index| cast_packet(player.buffered_sent_packets.remove(index)))
}
/// Verifies that the player with the given name was disconnected.
pub fn assert_disconnected(&mut self, player: Entity) -> &mut Self {
let tracked = self.tracked_player(player);
Self::update_player(tracked);
assert!(
tracked.disconnected,
"player `{}` not disconnected",
self.world.get::<Name>(player).0
);
self
}
fn tracked_player(&mut self, player: Entity) -> &mut TrackedPlayer {
self.players
.get_mut(&player)
.unwrap_or_else(|| panic!("player `{}` does not exist", player))
}
fn update_player(player: &mut TrackedPlayer) {
for msg in player.worker_rx.lock().unwrap().try_iter() {
match msg {
ServerToWorkerMessage::SendPacket(packet) => {
player.buffered_sent_packets.push(packet)
}
ServerToWorkerMessage::Disconnect => player.disconnected = true,
}
}
}
/// Updates acceleration structures required for tests to pass.
fn update_structures(&mut self, entity: Entity, old: Option<Position>, new: Position) {
let cross = ChunkCrossEvent {
old: old.map(Position::chunk),
new: new.chunk(),
entity,
};
self.handle(cross, on_chunk_cross_update_chunk_entities);
if self.world.has::<ChunkHolder>(entity) {
self.handle(cross, on_chunk_cross_update_chunks);
}
}
/// Verifies that an entity is alive.
pub fn assert_alive(&mut self, entity: Entity) -> &mut Self {
assert!(
self.world.is_alive(entity),
"expected entity {:?} to be alive, but it was not",
entity
);
self
}
/// Verifies that en entity is dead.
pub fn assert_dead(&mut self, entity: Entity) -> &mut Self {
assert!(
!self.world.is_alive(entity),
"expected entity {:?} to be dead, but it was not",
entity
);
self
}
}
pub struct ChunkWorkerTester {
pub cworker_tx: crossbeam::Sender<chunk_worker::Reply>,
pub cworker_rx: crossbeam::Receiver<chunk_worker::Request>,
}
impl ChunkWorkerTester {
fn new() -> (Self, ChunkWorkerHandle) {
let (cworker_tx, rx) = crossbeam::unbounded();
let (tx, cworker_rx) = crossbeam::unbounded();
(
Self {
cworker_rx,
cworker_tx,
},
ChunkWorkerHandle {
receiver: rx,
sender: tx,
},
)
}
}