r, err := NewReader(context.Background(), bytes.NewReader([]byte("abcd")), 4, "e2fc714c4727ee9395f324cd2e7f331f", "88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589", 4)
	if err != nil {
		t.Fatal(err)
	}
	_, err = io.Copy(io.Discard, r)
	if err != nil {
		t.Fatal(err)
	}
	md5sum := r.MD5Current()
	if hex.EncodeToString(md5sum) != "e2fc714c4727ee9395f324cd2e7f331f" {

		8: {
			bucketName: bucket, objName: object, inputData: []byte("abcd"),
			inputMeta: map[string]string{"etag": "e2fc714c4727ee9395f324cd2e7f331e"}, inputDataSize: int64(len("abcd") + 1),
			expectedError: hash.BadDigest{ExpectedMD5: "e2fc714c4727ee9395f324cd2e7f331e", CalculatedMD5: "e2fc714c4727ee9395f324cd2e7f331f"},
		},

		// Input with size less than the size of actual data inside the reader.
		9: {