public void SymLinkPolicy(Options.SymlinkStrategy symlinkPolicy)
{
// Create symlink target directory
const string targetDirName = "target";
var targetDir = systemIO.PathCombine(this.DATAFOLDER, targetDirName);
systemIO.DirectoryCreate(targetDir);
// Create files in symlink target directory
var fileNames = new[] { "a.txt", "b.txt", "c.txt" };
foreach (var file in fileNames)
{
var targetFile = systemIO.PathCombine(targetDir, file);
TestUtils.WriteFile(targetFile, Encoding.Default.GetBytes(file));
}
// Create actual symlink directory linking to the target directory
const string symlinkDirName = "symlink";
var symlinkDir = systemIO.PathCombine(this.DATAFOLDER, symlinkDirName);
try
{
systemIO.CreateSymlink(symlinkDir, targetDir, asDir: true);
}
catch (Exception e)
{
// If client cannot create symlinks, mark test as ignored
Assert.Ignore($"Client could not create a symbolic link. Error reported: {e.Message}");
}
// Backup all files with given symlink policy
Dictionary <string, string> restoreOptions = new Dictionary <string, string>(this.TestOptions)
{
["restore-path"] = this.RESTOREFOLDER
};
Dictionary <string, string> backupOptions = new Dictionary <string, string>(this.TestOptions)
{
["symlink-policy"] = symlinkPolicy.ToString()
};
using (Controller c = new Controller("file://" + this.TARGETFOLDER, backupOptions, null))
{
IBackupResults backupResults = c.Backup(new[] { this.DATAFOLDER });
Assert.AreEqual(0, backupResults.Errors.Count());
Assert.AreEqual(0, backupResults.Warnings.Count());
}
// Restore all files
using (Controller c = new Controller("file://" + this.TARGETFOLDER, restoreOptions, null))
{
IRestoreResults restoreResults = c.Restore(null);
Assert.AreEqual(0, restoreResults.Errors.Count());
Assert.AreEqual(0, restoreResults.Warnings.Count());
// Verify that symlink policy was followed
var restoreSymlinkDir = systemIO.PathCombine(this.RESTOREFOLDER, symlinkDirName);
switch (symlinkPolicy)
{
case Options.SymlinkStrategy.Store:
// Restore should contain an actual symlink to the original target
Assert.That(systemIO.IsSymlink(restoreSymlinkDir), Is.True);
var restoredSymlinkFullPath = systemIO.PathGetFullPath(systemIO.GetSymlinkTarget(restoreSymlinkDir));
var symlinkTargetFullPath = systemIO.PathGetFullPath(targetDir);
Assert.That(restoredSymlinkFullPath, Is.EqualTo(symlinkTargetFullPath));
break;
case Options.SymlinkStrategy.Follow:
// Restore should contain a regular directory with copies of the files in the symlink target
Assert.That(systemIO.IsSymlink(restoreSymlinkDir), Is.False);
TestUtils.AssertDirectoryTreesAreEquivalent(targetDir, restoreSymlinkDir, true, "Restore");
break;
case Options.SymlinkStrategy.Ignore:
// Restore should not contain the symlink or directory at all
Assert.That(systemIO.DirectoryExists(restoreSymlinkDir), Is.False);
Assert.That(systemIO.FileExists(restoreSymlinkDir), Is.False);
break;
default:
Assert.Fail($"Unexpected symlink policy");
break;
}
}
}
