using System.Runtime.CompilerServices;
using Sbroenne.ExcelMcp.Core.Commands;
namespace Sbroenne.ExcelMcp.Core.Tests.Helpers;
/// <summary>
/// xUnit test fixture that provides temp directory management for integration tests.
/// Automatically creates a unique temp directory and cleans up on disposal.
/// </summary>
/// <remarks>
/// Usage with xUnit IClassFixture:
/// <code>
/// public partial class MyTests : IClassFixture<TempDirectoryFixture>
/// {
/// private readonly TempDirectoryFixture _fixture;
///
/// public MyTests(TempDirectoryFixture fixture)
/// {
/// _fixture = fixture;
/// }
/// }
/// </code>
/// </remarks>
public class TempDirectoryFixture : IDisposable
{
private readonly FileCommands _fileCommands = new();
/// <summary>
/// Temporary directory for test files. Created in constructor, deleted in Dispose.
/// Shared across all tests in the test class.
/// </summary>
public string TempDir { get; }
/// <summary>
/// Creates a unique test Excel file for the calling test method.
/// </summary>
/// <param name="testName">Auto-populated with the calling method name.</param>
/// <param name="extension">File extension (default: .xlsx).</param>
/// <returns>Full path to the created file.</returns>
public string CreateTestFile([CallerMemberName] string testName = "", string extension = ".xlsx")
{
var fileName = $"{testName}_{Guid.NewGuid():N}{extension}";
var filePath = Path.Combine(TempDir, fileName);
_fileCommands.CreateEmpty(filePath);
return filePath;
}
private bool _disposed;
/// <summary>
/// Initializes the fixture with a unique temp directory.
/// </summary>
public TempDirectoryFixture()
{
TempDir = Path.Join(Path.GetTempPath(), $"ExcelMcp_Tests_{Guid.NewGuid():N}");
Directory.CreateDirectory(TempDir);
}
/// <summary>
/// Cleans up the temporary directory and all files within it.
/// </summary>
public void Dispose()
{
if (_disposed) return;
try
{
if (Directory.Exists(TempDir))
{
Directory.Delete(TempDir, recursive: true);
}
}
catch
{
// Cleanup failures are non-critical and shouldn't fail tests
}
_disposed = true;
GC.SuppressFinalize(this);
}
}
