How come drive API return a result when using invalid access token - google-api

Question

My Scenario
I'm using Google Drive API to create a file and to get a list of files.
My problem
1. No matter what value I put in my access_token the API keeps working
2. If I change the order of events and I call createDriveFile before I call listDriveFiles I get this error:
Error: Invalid Credentials
at Gaxios._request (/Users/tamirklein/superquery/bd/lambda/node_modules/googleapis-common/node_modules/google-auth-library/node_modules/gaxios/src/gaxios.ts:109:15)
at
at process._tickDomainCallback (internal/process/next_tick.js:228:7)
My code
if (!global._babelPolyfill) {
var a = require("babel-polyfill")
}
import {google} from 'googleapis'
describe('Run query with API', async () => {
it('check Drive APIs', async () => {
process.env.x_region = 'us-east-1';
let result = await test('start')
})
async function test(p1) {
let auth = getBasicAuthObj();
auth.setCredentials({
access_token: "anyValueWork",
refresh_token: "Replace With a valid refresh Token"
});
let fileList = await listDriveFiles(auth);
let newFile = await createDriveFile(auth);
}
async function listDriveFiles(auth) {
return new Promise((resolved) => {
const {google} = require('googleapis');
const drive = google.drive({version: 'v3', auth});
drive.files.list({
pageSize: 10,
fields: 'nextPageToken, files(id, name)',
q: 'trashed=false'
}, (err, res) => {
if (err) {
console.log('The API returned an error: ' + err);
resolved([err, null]);
} else {
const files = res.data.files;
if (files.length) {
console.log(`We fetched ${files.length} Files`);
// files.map((file) => {
// console.log(`${file.name} (${file.id})`);
// });
} else {
console.log('No files found.');
}
resolved([err, res]);
}
});
});
}
async function createDriveFile(auth) {
return new Promise(async (resolved) => {
//const fs = require('fs');
const {google} = require('googleapis');
const drive = google.drive({version: 'v3', auth});
let data = {
value: 'value'
};
let fileName = 'fileName.txt';
let fileMetadata = {
'name': fileName
};
// create buffer
let stream = require('stream');
let bufferStream = new stream.PassThrough();
bufferStream.end(Buffer.from(JSON.stringify(data)));
let media = {
mimeType: 'application/json',
body: bufferStream // fs.createReadStream("test.txt") //bufferStream //
};
drive.files.create({
resource: fileMetadata,
media: media,
fields: 'id'
}, function (err, file) {
if (err) {
// Handle error
console.error("Error: savePasswordInDrive" + err);
} else {
console.log('File Id: ', file.data.id);
}
resolved([err, file]);
});
})
}
async function _wait(milliseconds) {
return new Promise(resolved => {
setTimeout(() => {
resolved()
}, milliseconds)
})
}
/**
* Create oAuth object
* #returns {OAuth2Client}
*/
function getBasicAuthObj() {
let clientId = 'Replace With a valid clientId';
let clientSecret = 'Replace With a valid clientSecret';
let redirectUrl = 'URL';
return new google.auth.OAuth2(
clientId,
clientSecret,
redirectUrl
)
}
})
Any ideas on how to resolve this?