refactored adapters to run test suites (#126)

* refactored adapters to run test suites

* fix bun version for tests

* added missing adapter tests and refactored examples to use `bknd.config.ts` where applicable

app/src/adapter/cloudflare/config.ts

@@ -0,0 +1,64 @@
+import { registerMedia } from "./storage/StorageR2Adapter";
+import { getBinding } from "./bindings";
+import { D1Connection } from "./D1Connection";
+import type { CloudflareBkndConfig, CloudflareEnv } from ".";
+import { App } from "bknd";
+import { makeConfig as makeAdapterConfig } from "bknd/adapter";
+import type { ExecutionContext } from "hono";
+
+export const constants = {
+   exec_async_event_id: "cf_register_waituntil",
+   cache_endpoint: "/__bknd/cache",
+   do_endpoint: "/__bknd/do",
+};
+
+let media_registered: boolean = false;
+export function makeConfig<Env extends CloudflareEnv = CloudflareEnv>(
+   config: CloudflareBkndConfig<Env>,
+   args: Env = {} as Env,
+) {
+   if (!media_registered) {
+      registerMedia(args as any);
+      media_registered = true;
+   }
+
+   const appConfig = makeAdapterConfig(config, args);
+   const bindings = config.bindings?.(args);
+   if (!appConfig.connection) {
+      let db: D1Database | undefined;
+      if (bindings?.db) {
+         console.log("Using database from bindings");
+         db = bindings.db;
+      } else if (Object.keys(args).length > 0) {
+         const binding = getBinding(args, "D1Database");
+         if (binding) {
+            console.log(`Using database from env "${binding.key}"`);
+            db = binding.value;
+         }
+      }
+
+      if (db) {
+         appConfig.connection = new D1Connection({ binding: db });
+      } else {
+         throw new Error("No database connection given");
+      }
+   }
+
+   return appConfig;
+}
+
+export function registerAsyncsExecutionContext(
+   app: App,
+   ctx: { waitUntil: ExecutionContext["waitUntil"] },
+) {
+   app.emgr.onEvent(
+      App.Events.AppBeforeResponse,
+      async (event) => {
+         ctx.waitUntil(event.params.app.emgr.executeAsyncs());
+      },
+      {
+         mode: "sync",
+         id: constants.exec_async_event_id,
+      },
+   );
+}