feat: add some tests

src/endstone_test/event_listener.py

@@ -0,0 +1,28 @@
+import uuid
+from functools import partial
+
+from endstone import Server
+from endstone.event import event_handler, PlayerJoinEvent
+from endstone.plugin import Plugin
+
+
+class EventListener:
+    def __init__(self, plugin: Plugin):
+        self._plugin = plugin
+
+    @event_handler
+    def on_player_join(self, event: PlayerJoinEvent) -> None:
+        def send_welcome_message(player_name: str, player_id: uuid.UUID) -> None:
+            self.server.broadcast_message(f"Welcome {player_name} to the server.")
+            self.server.dispatch_command(self.server.command_sender, f"say {player_name}, uuid: {player_id}")
+
+        self.server.scheduler.run_task_later(self._plugin,
+                                             partial(send_welcome_message, event.player.name, event.player.unique_id),
+                                             delay=20)
+
+        assert self.server.get_player(event.player.name) is event.player
+        # assert self.server.get_player(event.player.unique_id) is event.player # TODO: this will crash
+
+    @property
+    def server(self) -> Server:
+        return self._plugin.server

src/endstone_test/plugin.py

@@ -1,15 +1,28 @@
+from endstone import __minecraft_version__
 from endstone.plugin import Plugin
 
+from endstone_test.event_listener import EventListener
+
 
 class TestPlugin(Plugin):
     name = "EndstoneTest"
     api_version = "0.4"
 
     def on_load(self) -> None:
         self.logger.info("on_load is called!")
+        assert len(self.server.levels) == 0
+        assert self.server.minecraft_version == f"v{__minecraft_version__}"
 
     def on_enable(self) -> None:
+        self._listener = EventListener(self)
+        self.register_events(self._listener)
+
         self.logger.info("on_enable is called!")
 
+        assert len(self.server.levels) == 1
+        assert self.server.max_players == 10
+        self.server.max_players = 100
+        assert self.server.max_players == 100
+
     def on_disable(self) -> None:
         self.logger.info("on_disable is called!")