// Expired policy document

	}

	resultCases := []ObjectInfo{
		// ObjectInfo -1.
		// ObjectName set to a existing object in the test case (Test case 14).
		{Bucket: "test-getobjectinfo", Name: "Asia/asiapics.jpg", ContentType: "image/jpeg", IsDir: false},
		{Bucket: "test-getobjectinfo", Name: "Asia/empty-dir/", ContentType: "application/octet-stream", IsDir: true},
	}
	testCases := []struct {
		bucketName string
		objectName string

  "elements": [
    {
      "element_type": "__elem__image",
      "element_id": "859d09c4-7cf1-4a37-9674-3a7de8b56abc",
      "attributes": {
        "__attr__image_dpi": 300,
        "__attr__image_size": [
          2550,
          3299
        ],
        "__attr__image_index": 1,
        "__attr__image_format": "JPEG",
        "__attr__file_extension": "jpg",
        "__attr__data": null

		metadata   map[string]string
		shouldFail bool
	}{
		// Validate if there a known 'content-type'.
		{
			header: http.Header{
				"Content-Type": []string{"image/png"},
			},
			metadata: map[string]string{
				"content-type": "image/png",
			},
			shouldFail: false,
		},
		// Validate if there are no keys to extract.
		{
			header: http.Header{
				"Test-1": []string{"123"},
			},

	if err != nil {
		t.Fatalf("%s: <ERROR> %s", instanceType, err)
	}

	if objInfo.ContentType != "image/png" {
		t.Errorf("%s: Expected Content type to be `%s`, but instead found `%s`", instanceType, "image/png", objInfo.ContentType)
	}

	// execute the HTTP request to create bucket.
	response, err := s.client.Do(request)
	c.Assert(err, nil)
	c.Assert(response.StatusCode, http.StatusOK)

	// Uploading a new object with Content-Type "image/png".
	// content for the object to be uploaded.
	buffer1 := bytes.NewReader([]byte("hello world"))
	objectName := "test-object.png"
	// constructing HTTP request for object upload.

//       - key: "name"
//         value: "pick*" # match objects with tag 'name', with all values starting with 'pick'
//     metadata:
//       - key: "content-type"
//         value: "image/*" # match objects with 'content-type', with all values starting with 'image/'
//     kmskey: "key-id" # match objects with KMS key-id (applicable only for sse-kms)
//   notify:

//         - key: name
//           value: pick* # match objects with tag 'name', all values starting with 'pick'
//       metadata:
//         - key: content-type
//           value: image/* # match objects with 'content-type', all values starting with 'image/'
//       size:
//         lessThan: "10MiB" # match objects with size less than this value (e.g. 10MiB)
//         greaterThan: 1MiB # match objects with size greater than this value (e.g. 1MiB)

	}{
		{"", "", ""},
		{"*", "", "*"},
		{"", "*", "*"},
		{"images/", "", "images/*"},
		{"images/*", "", "images/*"},
		{"", "jpg", "*jpg"},
		{"", "*jpg", "*jpg"},
		{"images/", "jpg", "images/*jpg"},
		{"images/*", "jpg", "images/*jpg"},
		{"images/", "*jpg", "images/*jpg"},
		{"images/*", "*jpg", "images/*jpg"},
		{"201*/images/", "jpg", "201*/images/*jpg"},
	}

	for i, testCase := range testCases {

import (
	"bytes"
	"encoding/binary"
	"fmt"
	"hash/crc32"
	"net/http"
	"strconv"
	"sync/atomic"
	"time"
)

// A message is in the format specified in
// https://docs.aws.amazon.com/AmazonS3/latest/API/images/s3select-frame-diagram-frame-overview.png
// hence the calculation is made accordingly.
func totalByteLength(headerLength, payloadLength int) int {
	return 4 + 4 + 4 + headerLength + payloadLength + 4
}