add testing infrastructure and example test (#276)

tests/util/Setup.ts

@@ -0,0 +1,38 @@
+import { generateMap } from "../../src/scripts/TerrainMapGenerator";
+import fs from "fs/promises";
+import path from "path";
+import { createGame } from "../../src/core/game/GameImpl";
+import { genTerrainFromBin } from "../../src/core/game/TerrainMapLoader";
+import { TestConfig } from "./TestConfig";
+import { TestServerConfig } from "./TestServerConfig";
+import { UserSettings } from "../../src/core/game/UserSettings";
+import { Difficulty, GameType } from "../../src/core/game/Game";
+
+export async function setup(mapName: string) {
+  // Load the specified map
+  const mapPath = path.join(__dirname, "..", "testdata", `${mapName}.png`);
+  const imageBuffer = await fs.readFile(mapPath);
+  const { map, miniMap } = await generateMap(imageBuffer);
+  const gameMap = await genTerrainFromBin(String.fromCharCode.apply(null, map));
+  const miniGameMap = await genTerrainFromBin(
+    String.fromCharCode.apply(null, miniMap),
+  );
+  const nationMap = { nations: [] };
+
+  // Configure the game
+  const serverConfig = new TestServerConfig();
+  const gameConfig = {
+    gameMap: null,
+    gameType: GameType.Singleplayer,
+    difficulty: Difficulty.Medium,
+    disableNPCs: false,
+    bots: 0,
+    infiniteGold: false,
+    infiniteTroops: false,
+    instantBuild: false,
+  };
+  const config = new TestConfig(serverConfig, gameConfig, new UserSettings());
+
+  // Create and return the game
+  return createGame(gameMap, miniGameMap, nationMap, config);
+}