system-io-abstractions

Guidance for System.IO.Abstractions file system abstraction library. USE FOR: wrapping file and directory operations for testability, mocking file system access in unit tests, replacing static File/Directory/Path calls with injectable interfaces, using MockFileSystem for deterministic test scenarios, testing code that reads/writes files. DO NOT USE FOR: actual file I/O performance optimization, replacing stream-based APIs, or scenarios where you need raw file system performance without abstraction overhead.

Ir a la instalación

Repositorio: Tyler-R-Kendrick/agent-skills
Última actividad en el origen: 11 de febrero de 2026 a las 05:14
Idioma detectado de SKILL.md: inglés
Estrellas: 10
Forks: 4

Opciones de instalación

De forma predeterminada está seleccionado el prompt que primero revisa el origen. Puedes cambiar a un comando directo o descargar una copia local.

Instalar con Codex o Claude Copia este prompt, pégalo en Codex, Claude u otro asistente, y deja que revise la página de la skill y la instale por ti.

Un comando directo omite el prompt de revisión. Revisa el origen antes de ejecutarlo.

npx skills add https://github.com/Tyler-R-Kendrick/agent-skills --skill system-io-abstractions

El comando permanece en una sola línea. Desplázate horizontalmente para revisarlo antes de copiarlo.

¿Prefieres una copia local? Descarga los archivos que SkillsMP tiene disponibles ahora.

Revisa los archivos de origen

Lee SKILL.md y los archivos complementarios que muestra SkillsMP antes de decidir si quieres instalarlo.

Explorador de archivos

16 archivos

SKILL.md

Instrucciones de origen · Vista previa de solo lectura

Volver a la búsqueda Volver a la instalación

name	system-io-abstractions
description	Guidance for System.IO.Abstractions file system abstraction library. USE FOR: wrapping file and directory operations for testability, mocking file system access in unit tests, replacing static File/Directory/Path calls with injectable interfaces, using MockFileSystem for deterministic test scenarios, testing code that reads/writes files. DO NOT USE FOR: actual file I/O performance optimization, replacing stream-based APIs, or scenarios where you need raw file system performance without abstraction overhead.
license	MIT
metadata	{"displayName":"System.IO.Abstractions","author":"Tyler-R-Kendrick","version":"1.0.0"}
compatibility	["claude","copilot","cursor"]
references	[{"title":"System.IO.Abstractions GitHub Repository","url":"https://github.com/TestableIO/System.IO.Abstractions"},{"title":"System.IO.Abstractions NuGet Package","url":"https://www.nuget.org/packages/System.IO.Abstractions"},{"title":"System.IO.Abstractions TestingHelpers NuGet Package","url":"https://www.nuget.org/packages/System.IO.Abstractions.TestingHelpers"}]

System.IO.Abstractions

using System.IO.Abstractions; using System.IO.Abstractions.TestingHelpers; using Xunit; public class ReportServiceTests { [Fact] public async Task GetReportFiles_Returns_Only_Json_Files() { var mockFs = new MockFileSystem(new Dictionary<string, MockFileData> { { @"C:\reports\jan.json", new MockFileData("{}") }, { @"C:\reports\feb.json", new MockFileData("{}") }, { @"C:\reports\readme.txt", new MockFileData("text") }, { @"C:\reports\data.csv", new MockFileData("a,b,c") } }); var service = new ReportService(mockFs); var files = await service.GetReportFilesAsync(@"C:\reports"); Assert.Equal(2, files.Count); Assert.All(files, f => Assert.EndsWith(".json", f)); } [Fact] public async Task GetReportFiles_Returns_Empty_For_Missing_Directory() { var mockFs = new MockFileSystem(); var service = new ReportService(mockFs); var files = await service.GetReportFilesAsync(@"C:\nonexistent"); Assert.Empty(files); } [Fact] public void GetDirectorySize_Calculates_Total_Bytes() { var mockFs = new MockFileSystem(new Dictionary<string, MockFileData> { { @"C:\data\file1.bin", new MockFileData(new byte[1024]) }, { @"C:\data\file2.bin", new MockFileData(new byte[2048]) }, { @"C:\data\sub\file3.bin", new MockFileData(new byte[512]) } }); var service = new ReportService(mockFs); long size = service.GetDirectorySizeBytes(@"C:\data"); Assert.Equal(3584, size); // 1024 + 2048 + 512 } [Fact] public async Task WriteReport_Then_ReadReport_RoundTrips() { var mockFs = new MockFileSystem(); var service = new ReportService(mockFs); var report = new { Title = "Monthly", Value = 42.5 }; await service.WriteReportAsync( @"C:\reports", "output.json", report); Assert.True(mockFs.File.Exists(@"C:\reports\output.json")); } }

Static API	IFileSystem Equivalent	Test Mock
`File.ReadAllText(path)`	`fileSystem.File.ReadAllText(path)`	`MockFileSystem` with pre-loaded files
`File.Exists(path)`	`fileSystem.File.Exists(path)`	Files in `MockFileSystem` dictionary
`Directory.CreateDirectory(path)`	`fileSystem.Directory.CreateDirectory(path)`	Verified via `mockFs.Directory.Exists()`
`Path.Combine(a, b)`	`fileSystem.Path.Combine(a, b)`	Works identically in mock
`new FileInfo(path)`	`fileSystem.FileInfo.New(path)`	`MockFileData` with size/dates
`File.WriteAllTextAsync(path, text)`	`fileSystem.File.WriteAllTextAsync(path, text)`	Read back from `MockFileSystem`

system-io-abstractions

Opciones de instalación

Revisa los archivos de origen

System.IO.Abstractions

System.IO.Abstractions

Overview

Service Registration

Injecting and Using IFileSystem

Testing with MockFileSystem

File Processing Service

Testing File Processing

Wrapping Path Operations

API Comparison

Best Practices

system-io-abstractions

Datos de origen

Opciones de instalación

Revisa los archivos de origen

Más de este repositorio

Más de este repositorio

System.IO.Abstractions

System.IO.Abstractions

Overview

Service Registration

Injecting and Using IFileSystem

Testing with MockFileSystem

File Processing Service

Testing File Processing

Wrapping Path Operations

API Comparison

Best Practices