Improve networking

tests/helpers.ts

@@ -4,6 +4,7 @@ import { load_and_check, load_order } from "$/tools/check_mods.ts";
 import type { ServerModSource } from "$/server/game/load_mods.ts";
 import { GameServer } from "$/server/game/game_server.ts";
 import { start_game } from "$/server/game/load_mods.ts";
+import { PROTOCOL_VERSION } from "$/common/protocol.ts";
 
 // mods straight from their source folders, skipping the build: scripts are imported as typescript
 export function mod_sources(mods_dir: string): ServerModSource[] {
@@ -20,6 +21,7 @@ export function mod_sources(mods_dir: string): ServerModSource[] {
 				version: String(mod.manifest?.version),
 				hash: "source",
 				data: `mods/${mod.id}/source/data.json`,
+				sha256: { data: "" },
 			},
 			data: {
 				blocks: mod.blocks.map((b) => b.json),
@@ -37,14 +39,18 @@ export function mod_sources(mods_dir: string): ServerModSource[] {
 export async function test_game(mods_dir: string, save?: string, seed = "test-seed") {
 	EverythingRegistry.clear();
 	const outbox = new Map<number, unknown[]>();
+	const closed = new Set<number>();
 	const host = {
 		send: (conn: number, data: string) => {
 			if (!outbox.has(conn)) outbox.set(conn, []);
 			outbox.get(conn)!.push(JSON.parse(data));
 		},
-		close() {},
+		close(conn: number) {
+			closed.add(conn);
+		},
 	};
-	const game: GameServer = await start_game(host, save, seed, mod_sources(mods_dir));
+	const atlas = { png: "atlas.png", json: "atlas.json", sha256: { png: "", json: "" } };
+	const game: GameServer = await start_game(host, save, seed, atlas, mod_sources(mods_dir));
 	// deno-lint-ignore no-explicit-any
 	const take = (conn: number): any[] => {
 		const messages = outbox.get(conn) ?? [];
@@ -52,7 +58,14 @@ export async function test_game(mods_dir: string, save?: string, seed = "test-se
 		return messages;
 	};
 	const send = (conn: number, message: unknown) => game.on_message(conn, JSON.stringify(message));
-	return { game, take, send };
+	// the whole handshake: hello, welcome, ready, join. returns join
+	const join = (conn: number, name: string) => {
+		game.on_connect(conn);
+		send(conn, { type: "hello", name, protocol: PROTOCOL_VERSION });
+		send(conn, { type: "ready" });
+		return take(conn).find((m) => m.type === "join");
+	};
+	return { game, take, send, join, closed };
 }
 
 export function copy_dir(from: string, to: string) {