// Copyright (c) Sbroenne. All rights reserved.
// Licensed under the MIT License.
using System.Runtime.CompilerServices;
using Sbroenne.ExcelMcp.Core.Commands;
using Xunit;
namespace Sbroenne.ExcelMcp.Core.Tests.Helpers;
/// <summary>
/// Fixture for Data Model tests that need isolated test files.
/// Provides temp directory and file creation helpers.
/// - Created ONCE before any tests run
/// - Each test creates unique files via CreateTestFile()
/// - Temp directory cleaned up after all tests complete
/// </summary>
public class DataModelTestsFixture : IAsyncLifetime
{
private readonly string _tempDir;
private readonly FileCommands _fileCommands = new();
/// <summary>
/// Temp directory for all test files (auto-cleaned on disposal)
/// </summary>
public string TempDir => _tempDir;
public DataModelTestsFixture()
{
_tempDir = Path.Join(Path.GetTempPath(), $"DataModelTests_{Guid.NewGuid():N}");
Directory.CreateDirectory(_tempDir);
}
/// <summary>
/// Creates a unique test file for tests that need their own file.
/// File name includes test name + GUID for uniqueness.
/// </summary>
/// <param name="testName">Test name (auto-populated via CallerMemberName)</param>
/// <param name="extension">File extension (default: .xlsx)</param>
/// <returns>Path to the new test file</returns>
public string CreateTestFile([CallerMemberName] string testName = "", string extension = ".xlsx")
{
var fileName = $"{testName}_{Guid.NewGuid():N}{extension}";
var filePath = Path.Join(_tempDir, fileName);
_fileCommands.CreateEmpty(filePath);
return filePath;
}
/// <summary>
/// Called ONCE before any tests in the class run.
/// </summary>
public Task InitializeAsync()
{
return Task.CompletedTask;
}
/// <summary>
/// Called ONCE after all tests in the class complete.
/// </summary>
public Task DisposeAsync()
{
try
{
if (Directory.Exists(_tempDir))
{
Directory.Delete(_tempDir, recursive: true);
}
}
catch
{
// Cleanup is best-effort
}
return Task.CompletedTask;
}
}
