How to write unit/integration tests for supertokens?

Question

• I am trying to setup a backend in node.js fastify that uses supertokens in the backend for auth and sveltekit in the frontend

I have managed to get auth endpoints working but I cannot find any documentation on how to go about writing unit tests or integration tests for the auth endpoints with supertokens for email, password and third party social login providers. Link to full repo

Relevant code section included below

import cors from "@fastify/cors";
import formDataPlugin from "@fastify/formbody";
import fastifyPlugin from "fastify-plugin";

import supertokens from "supertokens-node";
import Session from "supertokens-node/recipe/session/index.js";
import EmailPassword from "supertokens-node/recipe/emailpassword/index.js";
import ThirdPartyEmailPassword from "supertokens-node/recipe/thirdpartyemailpassword/index.js";
import {
  plugin,
  errorHandler,
} from "supertokens-node/framework/fastify/index.js";

async function auth(server, options) {
  supertokens.init({
    framework: "fastify",
    supertokens: {
      // These are the connection details of the app you created on supertokens.com
      connectionURI: server.config.SUPERTOKENS_CONNECTION_URI,
      apiKey: server.config.SUPERTOKENS_API_KEY,
    },
    appInfo: {
      // learn more about this on https://supertokens.com/docs/session/appinfo
      appName: server.config.SUPERTOKENS_APPNAME,
      apiDomain: server.config.SUPERTOKENS_API_DOMAIN,
      websiteDomain: server.config.SUPERTOKENS_WEBSITE_DOMAIN,
      apiBasePath: server.config.SUPERTOKENS_API_BASE_PATH,
      websiteBasePath: server.config.SUPERTOKENS_WEBSITE_BASE_PATH,
    },
    recipeList: [
      EmailPassword.init(), // initializes signin / sign up features
      ThirdPartyEmailPassword.init({
        providers: [
          // We have provided you with development keys which you can use for testing.
          // IMPORTANT: Please replace them with your own OAuth keys for production use.
          ThirdPartyEmailPassword.Google({
            clientId: server.config.SUPERTOKENS_3RD_PARTY_GOOGLE_CLIENT_ID,
            clientSecret:
              server.config.SUPERTOKENS_3RD_PARTY_GOOGLE_CLIENT_SECRET,
          }),
          ThirdPartyEmailPassword.Github({
            clientId: server.config.SUPERTOKENS_3RD_PARTY_GITHUB_CLIENT_ID,
            clientSecret:
              server.config.SUPERTOKENS_3RD_PARTY_GITHUB_CLIENT_SECRET,
          }),
        ],
      }),
      Session.init(), // initializes session features
    ],
  });

  // we register a CORS route to allow requests from the frontend
  server.register(cors, {
    origin: server.config.CORS_ORIGIN_URL,
    allowedHeaders: ["Content-Type", ...supertokens.getAllCORSHeaders()],
    methods: ["GET", "PUT", "POST", "DELETE"],
    credentials: true,
  });

  server.register(formDataPlugin);
  server.register(plugin);

  server.setErrorHandler(errorHandler());
}

export default fastifyPlugin(auth);

Assuming the library is Tap or Jest, can someone kindly share how to stub these?