IO0007.MD

IO0007. Replace DirectoryInfo class with IFileSystem.DirectoryInfo for improved testability

Topic	Value
Id	IO0007
Severity	Warning
Enabled	True
Category	System.IO.Abstractions

Description

Replace DirectoryInfo class with IFileSystem.DirectoryInfo for improved testability

Code with Diagnostic

using System.IO.Abstractions;

namespace SomeNameSpace
{
	public class WithOutFileSystem
	{
		private readonly IFileSystem _fileSystem;

		public WithOutFileSystem(IFileSystem fileSystem)
		{
			_fileSystem = fileSystem;
		}

		public void SomeMethod()
		{
			const string filePath = "C:\\temp.txt";

			DirectoryInfo dirInfo = new DirectoryInfo(filePath);
		}
	}
}

Code with Fix

using System.IO.Abstractions;

namespace SomeNameSpace
{
	public class WithOutFileSystem
	{
		private readonly IFileSystem _fileSystem;

		public WithOutFileSystem(IFileSystem fileSystem)
		{
			_fileSystem = fileSystem;
		}

		public void SomeMethod()
		{
			const string filePath = "C:\\temp.txt";

			DirectoryInfo dirInfo = _fileSystem.DirectoryInfo.FromDirectoryName(filePath);
		}
	}
}