/*
 * Copyright 2018 Intel Corporation, Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package rb

import (
	"bytes"
	"testing"
)

func TestIsTarGz(t *testing.T) {

	t.Run("Valid tar.gz", func(t *testing.T) {
		content := []byte{
			0x1f, 0x8b, 0x08, 0x08, 0xb0, 0x6b, 0xf4, 0x5b,
			0x00, 0x03, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x74,
			0x61, 0x72, 0x00, 0xed, 0xce, 0x41, 0x0a, 0xc2,
			0x30, 0x10, 0x85, 0xe1, 0xac, 0x3d, 0x45, 0x4e,
			0x50, 0x12, 0xd2, 0xc4, 0xe3, 0x48, 0xa0, 0x01,
			0x4b, 0x52, 0x0b, 0xed, 0x88, 0x1e, 0xdf, 0x48,
			0x11, 0x5c, 0x08, 0xa5, 0x8b, 0x52, 0x84, 0xff,
			0xdb, 0xbc, 0x61, 0x66, 0x16, 0x4f, 0xd2, 0x2c,
			0x8d, 0x3c, 0x45, 0xed, 0xc8, 0x54, 0x21, 0xb4,
			0xef, 0xb4, 0x67, 0x6f, 0xbe, 0x73, 0x61, 0x9d,
			0xb2, 0xce, 0xd5, 0x55, 0xf0, 0xde, 0xd7, 0x3f,
			0xdb, 0xd6, 0x49, 0x69, 0xb3, 0x67, 0xa9, 0x8f,
			0xfb, 0x2c, 0x71, 0xd2, 0x5a, 0xc5, 0xee, 0x92,
			0x73, 0x8e, 0x43, 0x7f, 0x4b, 0x3f, 0xff, 0xd6,
			0xee, 0x7f, 0xea, 0x9a, 0x4a, 0x19, 0x1f, 0xe3,
			0x54, 0xba, 0xd3, 0xd1, 0x55, 0x00, 0x00, 0x00,
			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
			0x00, 0x00, 0x00, 0x1b, 0xbc, 0x00, 0xb5, 0xe8,
			0x4a, 0xf9, 0x00, 0x28, 0x00, 0x00,
		}

		err := isTarGz(bytes.NewBuffer(content))
		if err != nil {
			t.Errorf("Error reading valid Zip file %s", err.Error())
		}
	})

	t.Run("Invalid tar.gz", func(t *testing.T) {
		content := []byte{
			0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
			0x00, 0xff, 0xf2, 0x48, 0xcd,
		}

		err := isTarGz(bytes.NewBuffer(content))
		if err == nil {
			t.Errorf("Error should NOT be nil")
		}
	})
}