refactor(api): inject server dependencies in tests

ts/api/server.ts

@@ -17,6 +17,12 @@ import { ModelLoader } from '../models/loader.ts';
 import { GpuDetector } from '../hardware/gpu-detector.ts';
 import { ClusterHandler } from './handlers/cluster.ts';
 
+interface IApiServerOptions {
+  gpuDetector?: GpuDetector;
+  router?: ApiRouter;
+  clusterHandler?: ClusterHandler;
+}
+
 /**
  * API Server for ModelGrid
  */
@@ -42,15 +48,16 @@ export class ApiServer {
     modelRegistry: ModelRegistry,
     modelLoader: ModelLoader,
     clusterCoordinator: ClusterCoordinator,
+    options: IApiServerOptions = {},
   ) {
     this.config = config;
     this.containerManager = containerManager;
     this.modelRegistry = modelRegistry;
-    this.gpuDetector = new GpuDetector();
+    this.gpuDetector = options.gpuDetector || new GpuDetector();
     this.modelLoader = modelLoader;
     this.clusterCoordinator = clusterCoordinator;
-    this.clusterHandler = new ClusterHandler(clusterCoordinator);
-    this.router = new ApiRouter(
+    this.clusterHandler = options.clusterHandler || new ClusterHandler(clusterCoordinator);
+    this.router = options.router || new ApiRouter(
       containerManager,
       modelRegistry,
       this.modelLoader,