using System.IO;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using SharpCompress.Common;
using SharpCompress.Writer;
using SharpCompress.Writer.GZip;

namespace SharpCompress.Test
{
    [TestClass]
    public class GZipWriterTests : WriterTests
    {
        public GZipWriterTests()
            : base(ArchiveType.GZip)
        {
            UseExtensionInsteadOfNameToVerify = true;
        }

        [TestMethod]
        public void GZip_Writer_Generic()
        {
            ResetScratch();
            using (Stream stream = File.Open(Path.Combine(SCRATCH_FILES_PATH, "Tar.tar.gz"), FileMode.OpenOrCreate, FileAccess.Write))
            using (var writer = WriterFactory.Open(stream, ArchiveType.GZip, CompressionType.GZip))
            {
                writer.Write("Tar.tar", Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar"));
            }
            CompareArchivesByPath(Path.Combine(SCRATCH_FILES_PATH, "Tar.tar.gz"),
                Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz"));
        }

        [TestMethod]
        public void GZip_Writer()
        {
            ResetScratch();
            using (Stream stream = File.Open(Path.Combine(SCRATCH_FILES_PATH, "Tar.tar.gz"), FileMode.OpenOrCreate, FileAccess.Write))
            using (var writer = new GZipWriter(stream))
            {
                writer.Write("Tar.tar", Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar"));
            }
            CompareArchivesByPath(Path.Combine(SCRATCH_FILES_PATH, "Tar.tar.gz"),
                Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz"));
        }

        [TestMethod]
        [ExpectedException(typeof(InvalidFormatException))]
        public void GZip_Writer_Generic_Bad_Compression()
        {
            ResetScratch();
            using (Stream stream = File.OpenWrite(Path.Combine(SCRATCH_FILES_PATH, "Tar.tar.gz")))
            using (var writer = WriterFactory.Open(stream, ArchiveType.GZip, CompressionType.BZip2))
            {
                writer.Write("Tar.tar", Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar"));
            }
            CompareArchivesByPath(Path.Combine(SCRATCH_FILES_PATH, "Tar.tar.gz"),
                Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.gz"));
        }
    }
}