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using System.IO;
using Jellyfin.Extensions;
using Xunit;
namespace Jellyfin.Extensions.Tests
{
public static class PathHelperTests
{
[Theory]
[InlineData("file.txt", "file.txt")]
[InlineData("sub/file.txt", "file.txt")]
[InlineData("../../etc/passwd", "passwd")]
public static void GetSafeLeafFileName_ReducesToLeaf(string input, string expected)
{
Assert.Equal(expected, PathHelper.GetSafeLeafFileName(input));
}
[Theory]
[InlineData(null)]
[InlineData("")]
[InlineData(".")]
[InlineData("..")]
public static void GetSafeLeafFileName_RejectsUnusableLeaf(string? input)
{
Assert.Null(PathHelper.GetSafeLeafFileName(input));
}
[Fact]
public static void IsContainedIn_ChildPath_ReturnsTrue()
{
var root = Path.Combine(Path.GetTempPath(), "root");
var child = Path.Combine(root, "sub", "file.txt");
Assert.True(PathHelper.IsContainedIn(root, child));
}
[Fact]
public static void IsContainedIn_RootItself_ReturnsTrue()
{
var root = Path.Combine(Path.GetTempPath(), "root");
Assert.True(PathHelper.IsContainedIn(root, root));
}
[Fact]
public static void IsContainedIn_TraversalEscape_ReturnsFalse()
{
var root = Path.Combine(Path.GetTempPath(), "root");
var escape = Path.Combine(root, "..", "..", "etc", "passwd");
Assert.False(PathHelper.IsContainedIn(root, escape));
}
[Fact]
public static void IsContainedIn_SiblingPrefixCollision_ReturnsFalse()
{
// "/var/data" must not be accepted as a parent of "/var/dataset".
var root = Path.Combine(Path.GetTempPath(), "data");
var sibling = Path.Combine(Path.GetTempPath(), "dataset", "file.txt");
Assert.False(PathHelper.IsContainedIn(root, sibling));
}
}
}
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