public void TestFilenameDeDuplication()
{
var paths = new List <string> {
@"c:\blie\bla.txt", @"c:\bla\bla.txt", @"c:\blie\bla.txt", @"c:\yadi.json",
@"c:\blie\bit.xml", @"c:\blie\bit.json", @"c:\blie\bit.txt"
};
var res = DirectorySource.ResolveDuplicateFilenames(paths, DirectorySource.DuplicateFilenameResolution.PreferXml);
Assert.AreEqual(5, res.Count);
Assert.IsTrue(res.Any(p => p.EndsWith("bit.xml")));
Assert.IsTrue(res.Any(p => p.EndsWith("bit.txt")));
Assert.IsFalse(res.Any(p => p.EndsWith("bit.json")));
Assert.IsTrue(res.Any(p => p.EndsWith("yadi.json")));
res = DirectorySource.ResolveDuplicateFilenames(paths, DirectorySource.DuplicateFilenameResolution.PreferJson);
Assert.AreEqual(5, res.Count);
Assert.IsFalse(res.Any(p => p.EndsWith("bit.xml")));
Assert.IsTrue(res.Any(p => p.EndsWith("bit.txt")));
Assert.IsTrue(res.Any(p => p.EndsWith("bit.json")));
Assert.IsTrue(res.Any(p => p.EndsWith("yadi.json")));
res = DirectorySource.ResolveDuplicateFilenames(paths, DirectorySource.DuplicateFilenameResolution.KeepBoth);
Assert.AreEqual(6, res.Count);
Assert.IsTrue(res.Any(p => p.EndsWith("bit.xml")));
Assert.IsTrue(res.Any(p => p.EndsWith("bit.json")));
}