const s3 = new AWS.S3({
  endpoint: 'http://localhost:4566',
  signatureVersion: 'v4', // Required for the presigned URL functionality with extra headers
  s3ForcePathStyle: true, // Do not use custom domains
});

const body = '123456';
const invalidBodyMd5AsBase64 = '123456'

const url = await s3.getSignedUrlPromise('putObject', {
  Bucket: 'test-bucket',
  Key: 'test-file',
  Expires: 3600,
  ContentMD5: invalidBodyMd5AsBase64 // Adds 'Content-MD5' parameter in query string
});

const result = await fetch(url, {
  method: 'PUT',
  body: body,
  headers: {
    'Content-Type': 'text/plain',
    'Accept': 'application/json',
    'Content-MD5': invalidBodyMd5AsBase64, // This is required, otherwise AWS refuses to accept the request
  },
});

assert(result.ok); // This should fail as the request should be denied because of miss-matching Content-MD5 hash