AgentSkillsCN

system-io-abstractions

System.IO.Abstractions 的使用指南。适用于在使用系统 IO 抽象时参考。

SKILL.md
--- frontmatter
name: system-io-abstractions
description: Guidance for System.IO.Abstractions usage. Use when working with system io abstractions.
license: MIT
metadata:
  displayName: "System.IO.Abstractions"
  author: "Tyler-R-Kendrick"

System.IO.Abstractions

Overview

Use the System.IO.Abstractions package to wrap file and directory access so IO can be mocked and tested.

When to use

  • •Any code that reads or writes the file system.
  • •Services that need deterministic tests without touching disk.

Setup

csharp
builder.Services.AddSingleton<IFileSystem, FileSystem>();

Example

csharp
public sealed class ReportStore(IFileSystem fileSystem)
{
	public Task SaveAsync(string path, string contents, CancellationToken ct)
	{
		fileSystem.File.WriteAllText(path, contents);
		return Task.CompletedTask;
	}
}

Guidance

  • •Inject IFileSystem and avoid File and Directory static calls.
  • •Wrap Path operations if you need to fake them in tests.