rulesCase5.Add(NewPattern("", "*.png"), TargetID{"2", "amqp"})
	rules2Case5 := make(Rules)
	rules2Case5.Add(NewPattern("*", ""), TargetID{"1", "webhook"})
	expectedResultCase5 := make(Rules)
	expectedResultCase5.Add(NewPattern("2010*", ""), TargetID{"1", "webhook"})
	expectedResultCase5.Add(NewPattern("", "*.png"), TargetID{"2", "amqp"})

	"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
}

func genMessage(header, payload []byte) []byte {

	// Test empty.
	_, err = obj.PutObject(context.Background(), "bucket", "minio.png", mustGetPutObjReader(t, bytes.NewBufferString(uploadContent), int64(len(uploadContent)), "", ""), opts)
	if err != nil {
		t.Fatalf("%s: <ERROR> %s", instanceType, err)
	}
	objInfo, err := obj.GetObjectInfo(context.Background(), "bucket", "minio.png", opts)
	if err != nil {
		t.Fatalf("%s: <ERROR> %s", instanceType, err)
	}

	var err error
	testObjects := []struct {
		parentBucket string
		name         string
		content      string
		meta         map[string]string
	}{
		{testBuckets[0], "Asia-maps.png", "asis-maps", map[string]string{"content-type": "image/png"}},
		{testBuckets[0], "Asia/India/India-summer-photos-1", "contentstring", nil},
		{testBuckets[0], "Asia/India/Karnataka/Bangalore/Koramangala/pics", "contentstring", nil},

// ====================
// Header specification
// --------------------
// Continuation messages contain two headers, as follows:
// https://docs.aws.amazon.com/AmazonS3/latest/API/images/s3select-frame-diagram-cont.png
//
// Payload specification
// ---------------------
// Continuation messages have no payload.
func genContinuationMessage() {
	buf := new(bytes.Buffer)

	buf.WriteByte(13)
	buf.WriteString(":message-type")

	// Some standard object extensions which we strictly dis-allow for compression.
	standardExcludeCompressExtensions = []string{".gz", ".bz2", ".rar", ".zip", ".7z", ".xz", ".mp4", ".mkv", ".mov", ".jpg", ".png", ".gif"}

	// Some standard content-types which we strictly dis-allow for compression.

		{rulesMapCase2, ObjectCreatedPut, "2010/photo.jpg", NewTargetIDSet(TargetID{"1", "webhook"})},
		{rulesMapCase3, ObjectCreatedPut, "2000/photo.png", NewTargetIDSet()},
		{rulesMapCase4, ObjectCreatedPut, "2000/photo.png", NewTargetIDSet(TargetID{"2", "amqp"})},
	}

	for i, testCase := range testCases {
		result := testCase.rulesMap.Match(testCase.eventName, testCase.objectName)

	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.
	request, err = newTestSignedRequest(http.MethodPut, getPutObjectURL(s.endPoint, bucketName, objectName),

		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"},
			},

func TestCheckMetaHeaders(t *testing.T) {
	signedHeadersMap := map[string][]string{
		"X-Amz-Meta-Test":      {"test"},
		"X-Amz-Meta-Extension": {"png"},
		"X-Amz-Meta-Name":      {"imagepng"},
	}
	expectedMetaTest := "test"
	expectedMetaExtension := "png"
	expectedMetaName := "imagepng"
	r, err := http.NewRequest(http.MethodPut, "http://play.min.io:9000", nil)
	if err != nil {