duplicati/Duplicati/UnitTest/Issue5196.cs

// Copyright (C) 2025, The Duplicati Team
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// 
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using System;
using System.IO;
using System.Linq;
using Duplicati.Library.Main.Volumes;
using NUnit.Framework;
using Assert = NUnit.Framework.Legacy.ClassicAssert;

namespace Duplicati.UnitTest;

public class Issue5196 : BasicSetupHelper
{
    [Test]
    [Category("Targeted")]
    public void RunCommands()
    {
        var testopts = TestOptions;
        testopts["upload-unchanged-backups"] = "true";
        testopts["blocksize"] = "50kb";

        var data = new byte[1024 * 1024 * 10];
        File.WriteAllBytes(Path.Combine(DATAFOLDER, "a"), data);
        using (var c = new Library.Main.Controller("file://" + TARGETFOLDER, testopts, null))
        {
            var r = c.Backup(new string[] { DATAFOLDER });
            Assert.AreEqual(0, r.Errors.Count());
            Assert.AreEqual(0, r.Warnings.Count());
            Assert.AreEqual(1, r.AddedFiles);
            var pr = (Library.Interface.IParsedBackendStatistics)r.BackendStatistics;
            if (pr.KnownFileSize == 0 || pr.KnownFileCount != 3 || pr.BackupListCount != 1)
                throw new Exception(string.Format("Failed to get stats from remote backend: {0}, {1}, {2}", pr.KnownFileSize, pr.KnownFileCount, pr.BackupListCount));

            System.Threading.Thread.Sleep(3000);

            r = c.Backup(new string[] { DATAFOLDER });
            Assert.AreEqual(0, r.Errors.Count());
            Assert.AreEqual(0, r.Warnings.Count());
            pr = (Library.Interface.IParsedBackendStatistics)r.BackendStatistics;
            if (pr.KnownFileSize == 0 || pr.KnownFileCount != 4 || pr.BackupListCount != 2)
                throw new Exception(string.Format("Failed to get stats from remote backend: {0}, {1}, {2}", pr.KnownFileSize, pr.KnownFileCount, pr.BackupListCount));

            var versions = c.List().Filesets.ToList();

            using (var tempDbPath = new Library.Utility.TempFile())
            {
                testopts["dbpath"] = tempDbPath;
                testopts["repair-only-paths"] = "true";
                testopts.Remove("blocksize");
                testopts["time"] = Library.Utility.Utility.SerializeDateTime(versions[0].Time);
                var rcr1 = c.UpdateDatabaseWithVersions();

                testopts["time"] = Library.Utility.Utility.SerializeDateTime(versions[1].Time);
                var rcr2 = c.UpdateDatabaseWithVersions();

                File.Delete(tempDbPath);
                testopts["repair-only-paths"] = "true";
                testopts["blocksize"] = "25kb";
                try
                {
                    c.UpdateDatabaseWithVersions();
                    throw new Exception("Expected an exception when changing blocksize");
                }
                catch (InvalidManifestException)
                {
                }
            }
        }

    }
}