How to test RPC Workers?

// test/index.test.ts
import { env, createExecutionContext } from "cloudflare:test"
import { describe, it, expect } from "vitest"
import ShareBucket from "../src/index"

describe("R2 Bucket", () => {
  let worker: ShareBucket | null = null

  it("creates a worker", async () => {
    const ctx = createExecutionContext()
    worker = new ShareBucket(ctx, env)
    expect(worker).toBeDefined()
  })
})

// src/index.ts
import { api } from "./api"
import { WorkerEntrypoint } from "cloudflare:workers"

export default class ShareBucket extends WorkerEntrypoint<Env> {
  async putObject(object: unknown) {
    // ...
  }

  async getObject(key: string) {
    // ...
  }

  async fetch(request: Request): Promise<Response> {
    return api.state("env", this.env).state("ctx", this.ctx).fetch(request)
  }
}