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Tar MemoryStream only works with no compression #543

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opened 2026-01-29 22:13:30 +00:00 by claunia · 0 comments
claunia commented 2026-01-29 22:13:30 +00:00
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Originally created by @DR9885 on GitHub (Nov 24, 2022).

Example Test (similar to existing), only none passes

[Theory]
        [InlineData(CompressionType.None)]
        [InlineData(CompressionType.GZip)]
        [InlineData(CompressionType.LZip)]
        [InlineData(CompressionType.BZip2)]
        public void TestCompressions(CompressionType compressionType)
        {
            const string filename = "file.txt";
            const string input = "dummy filecontent";

            // Step 1: create a tar in memory
            using var stream = new MemoryStream();
            using var writer = WriterFactory.Open(stream, ArchiveType.Tar, compressionType);
            using var inputStream = new MemoryStream();
            inputStream.Write(Encoding.UTF8.GetBytes(input));
            inputStream.Position = 0;
            writer.Write(filename, inputStream, null);
            stream.Position = 0;

            // Step 2: check if the written tar file can be read correctly
            using var archive2 = TarArchive.Open(stream);
            Assert.Equal(1, archive2.Entries.Count);
            Assert.Contains(filename, archive2.Entries.Select(entry => entry.Key));

            foreach (var entry in archive2.Entries)
                Assert.Equal("dummy filecontent", new StreamReader(entry.OpenEntryStream()).ReadLine());
        }
Originally created by @DR9885 on GitHub (Nov 24, 2022). Example Test (similar to existing), only none passes ``` [Theory] [InlineData(CompressionType.None)] [InlineData(CompressionType.GZip)] [InlineData(CompressionType.LZip)] [InlineData(CompressionType.BZip2)] public void TestCompressions(CompressionType compressionType) { const string filename = "file.txt"; const string input = "dummy filecontent"; // Step 1: create a tar in memory using var stream = new MemoryStream(); using var writer = WriterFactory.Open(stream, ArchiveType.Tar, compressionType); using var inputStream = new MemoryStream(); inputStream.Write(Encoding.UTF8.GetBytes(input)); inputStream.Position = 0; writer.Write(filename, inputStream, null); stream.Position = 0; // Step 2: check if the written tar file can be read correctly using var archive2 = TarArchive.Open(stream); Assert.Equal(1, archive2.Entries.Count); Assert.Contains(filename, archive2.Entries.Select(entry => entry.Key)); foreach (var entry in archive2.Entries) Assert.Equal("dummy filecontent", new StreamReader(entry.OpenEntryStream()).ReadLine()); } ```
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Reference: starred/sharpcompress#543
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