104 lines
2.8 KiB
C#
104 lines
2.8 KiB
C#
using SharpCompress.Compressors.Xz;
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using System.IO;
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using Xunit;
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namespace SharpCompress.Test.Xz;
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public class XZIndexTests : XZTestsBase
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{
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protected override void RewindEmpty(Stream stream) => stream.Position = 12;
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protected override void Rewind(Stream stream) => stream.Position = 356;
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protected override void RewindIndexed(Stream stream) => stream.Position = 612;
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[Fact]
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public void RecordsStreamStartOnInit()
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{
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using (Stream badStream = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 }))
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{
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BinaryReader br = new BinaryReader(badStream);
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var index = new XZIndex(br, false);
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Assert.Equal(0, index.StreamStartPosition);
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}
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}
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[Fact]
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public void ThrowsIfHasNoIndexMarker()
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{
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using (Stream badStream = new MemoryStream(new byte[] { 1, 2, 3, 4, 5 }))
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{
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BinaryReader br = new BinaryReader(badStream);
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var index = new XZIndex(br, false);
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Assert.Throws<InvalidDataException>(() => index.Process());
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}
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}
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[Fact]
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public void ReadsNoRecord()
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{
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BinaryReader br = new BinaryReader(CompressedEmptyStream);
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var index = new XZIndex(br, false);
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index.Process();
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Assert.Equal((ulong)0, index.NumberOfRecords);
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}
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[Fact]
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public void ReadsOneRecord()
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{
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BinaryReader br = new BinaryReader(CompressedStream);
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var index = new XZIndex(br, false);
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index.Process();
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Assert.Equal((ulong)1, index.NumberOfRecords);
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}
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[Fact]
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public void ReadsMultipleRecords()
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{
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BinaryReader br = new BinaryReader(CompressedIndexedStream);
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var index = new XZIndex(br, false);
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index.Process();
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Assert.Equal((ulong)2, index.NumberOfRecords);
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}
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[Fact]
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public void ReadsFirstRecord()
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{
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BinaryReader br = new BinaryReader(CompressedStream);
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var index = new XZIndex(br, false);
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index.Process();
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Assert.Equal((ulong)OriginalBytes.Length, index.Records[0].UncompressedSize);
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}
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[Fact]
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public void SkipsPadding()
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{
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// Index with 3-byte padding.
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using (
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Stream badStream = new MemoryStream(
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new byte[]
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{
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0x00,
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0x01,
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0x10,
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0x80,
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0x01,
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0x00,
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0x00,
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0x00,
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0xB1,
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0x01,
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0xD9,
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0xC9,
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0xFF
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}
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)
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)
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{
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BinaryReader br = new BinaryReader(badStream);
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var index = new XZIndex(br, false);
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index.Process();
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Assert.Equal(0L, badStream.Position % 4L);
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}
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}
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}
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