# Type of request: This is a ...
[ ] bug report
[x] feature request

# Detailed description
As a Developer,
I want to be able to simulate BadDigest and InvalidDigest errors,
So that I can test the error handling logic

## Expected behavior
https://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html
BadDigest: The Content-MD5 you specified did not match what we received.
InvalidDigest: The Content-MD5 you specified is not valid.

## Actual behavior
localstack returns InvalidDigest when MD5 does not match payload.


bucket_name = 'test-%s' % short_uid()
        self.s3_client.create_bucket(Bucket=bucket_name)
        
        object_key = 'key-with-metadata'
        metadata = {'test_meta_1': 'foo', '__meta_2': 'bar'}
        self.s3_client.put_object(Bucket=bucket_name, Key=object_key, Metadata=metadata, Body='foo',
                                  Expires=datetime.datetime.now(timezone('GMT')) - datetime.timedelta(hours=1))
        
        self.assertRaises(Exception, self.s3_client.get_object, Bucket=bucket_name, Key=object_key.lower())
        self.s3_client.put_object(Bucket=bucket_name, Key=object_key, Metadata=metadata, Body='foo',
                                  Expires=datetime.datetime.now(timezone('GMT')) + datetime.timedelta(hours=1))
        
        resp = self.s3_client.get_object(Bucket=bucket_name, Key=object_key)
        self.assertIn('Expires', resp)
        
        self._delete_bucket(bucket_name, [object_key])
    def test_s3_predesigned_url_expired(self):