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using System;
using System.IO;
using NUnit.Framework;
using XenCenterLib.Archive;

namespace XenAdminTests.ArchiveTests
{
    [TestFixture, Category(TestCategories.Unit)]
    public class ArchiveFactoryTests
    {
        [TestCase(ArchiveFactory.Type.Tar, ExpectedResult = typeof(TarArchiveIterator))]
        [TestCase(ArchiveFactory.Type.TarGz, ExpectedResult = typeof(TarArchiveIterator))]
        [Test]
        public Type TestReaderGeneration(int archiveType)
        {
            string target = TestUtils.GetTestResource("emptyfile.gz");

            using (var ms = new MemoryStream(File.ReadAllBytes(target)))
            using (var iterator = ArchiveFactory.Reader((ArchiveFactory.Type)archiveType, ms))
                return iterator.GetType();
        }


        [TestCase(ArchiveFactory.Type.Tar, ExpectedResult = typeof(TarArchiveWriter))]
        [TestCase(ArchiveFactory.Type.Zip, ExpectedResult = typeof(ZipArchiveWriter))]
        [Test]
        public Type TestWriterGeneration(int archiveType)
        {
            using (var ms = new MemoryStream())
            {
                using (var writer = ArchiveFactory.Writer((ArchiveFactory.Type)archiveType, ms))
                    return writer.GetType();
            }
        }

        [TestCase(ArchiveFactory.Type.TarGz)]
        [Test]
        public void TestWriterGenerationUnsupported(int archiveType)
        {
            using (var ms = new MemoryStream())
            {
                Assert.Throws(typeof(NotSupportedException),
                    () => ArchiveFactory.Writer((ArchiveFactory.Type)archiveType, ms));
            }
        }
    }
}